Fix "invalid escape sequences" error on Python 3.6

8 years ago · ec85ded83c
parent 24d8a75982
commit ec85ded83c
283 changed files with 538 additions and 538 deletions
--- a/README.md
+++ b/README.md
@ -961,7 +961,7 @@ After you have ensured this site is distributing its content legally, you can fo
                'id': '42',
                'ext': 'mp4',
                'title': 'Video title goes here',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
                # TODO more properties, either as:
                # * A value
                # * MD5 checksum; start the string with md5:
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@ -1339,7 +1339,7 @@ class YoutubeDL(object):
                format['format_id'] = compat_str(i)
            else:
                # Sanitize format_id from characters used in format selector expression
-                format['format_id'] = re.sub('[\s,/+\[\]()]', '_', format['format_id'])
+                format['format_id'] = re.sub(r'[\s,/+\[\]()]', '_', format['format_id'])
            format_id = format['format_id']
            if format_id not in formats_dict:
                formats_dict[format_id] = []
--- a/youtube_dl/compat.py
+++ b/youtube_dl/compat.py
@ -2344,7 +2344,7 @@ try:
    from urllib.parse import unquote_plus as compat_urllib_parse_unquote_plus
 except ImportError:  # Python 2
    _asciire = (compat_urllib_parse._asciire if hasattr(compat_urllib_parse, '_asciire')
-                else re.compile('([\x00-\x7f]+)'))
+                else re.compile(r'([\x00-\x7f]+)'))

    # HACK: The following are the correct unquote_to_bytes, unquote and unquote_plus
    # implementations from cpython 3.4.3's stdlib. Python 2's version
--- a/youtube_dl/extractor/abcnews.py
+++ b/youtube_dl/extractor/abcnews.py
@ -23,7 +23,7 @@ class AbcNewsVideoIE(AMPIE):
            'title': '\'This Week\' Exclusive: Iran\'s Foreign Minister Zarif',
            'description': 'George Stephanopoulos goes one-on-one with Iranian Foreign Minister Dr. Javad Zarif.',
            'duration': 180,
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
        },
        'params': {
            # m3u8 download
@ -59,7 +59,7 @@ class AbcNewsIE(InfoExtractor):
            'display_id': 'dramatic-video-rare-death-job-america',
            'title': 'Occupational Hazards',
            'description': 'Nightline investigates the dangers that lurk at various jobs.',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'upload_date': '20100428',
            'timestamp': 1272412800,
        },
--- a/youtube_dl/extractor/abcotvs.py
+++ b/youtube_dl/extractor/abcotvs.py
@ -23,7 +23,7 @@ class ABCOTVSIE(InfoExtractor):
                'ext': 'mp4',
                'title': 'East Bay museum celebrates vintage synthesizers',
                'description': 'md5:a4f10fb2f2a02565c1749d4adbab4b10',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
                'timestamp': 1421123075,
                'upload_date': '20150113',
                'uploader': 'Jonathan Bloom',
--- a/youtube_dl/extractor/adobetv.py
+++ b/youtube_dl/extractor/adobetv.py
@ -30,7 +30,7 @@ class AdobeTVIE(AdobeTVBaseIE):
            'ext': 'mp4',
            'title': 'Quick Tip - How to Draw a Circle Around an Object in Photoshop',
            'description': 'md5:99ec318dc909d7ba2a1f2b038f7d2311',
-            'thumbnail': 're:https?://.*\.jpg$',
+            'thumbnail': r're:https?://.*\.jpg$',
            'upload_date': '20110914',
            'duration': 60,
            'view_count': int,
--- a/youtube_dl/extractor/airmozilla.py
+++ b/youtube_dl/extractor/airmozilla.py
@ -20,7 +20,7 @@ class AirMozillaIE(InfoExtractor):
            'id': '6x4q2w',
            'ext': 'mp4',
            'title': 'Privacy Lab - a meetup for privacy minded people in San Francisco',
-            'thumbnail': 're:https?://vid\.ly/(?P<id>[0-9a-z-]+)/poster',
+            'thumbnail': r're:https?://vid\.ly/(?P<id>[0-9a-z-]+)/poster',
            'description': 'Brings together privacy professionals and others interested in privacy at for-profits, non-profits, and NGOs in an effort to contribute to the state of the ecosystem...',
            'timestamp': 1422487800,
            'upload_date': '20150128',
--- a/youtube_dl/extractor/allocine.py
+++ b/youtube_dl/extractor/allocine.py
@ -21,7 +21,7 @@ class AllocineIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Astérix - Le Domaine des Dieux Teaser VF',
            'description': 'md5:4a754271d9c6f16c72629a8a993ee884',
-            'thumbnail': 're:http://.*\.jpg',
+            'thumbnail': r're:http://.*\.jpg',
        },
    }, {
        'url': 'http://www.allocine.fr/video/player_gen_cmedia=19540403&cfilm=222257.html',
@ -32,7 +32,7 @@ class AllocineIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Planes 2 Bande-annonce VF',
            'description': 'Regardez la bande annonce du film Planes 2 (Planes 2 Bande-annonce VF). Planes 2, un film de Roberts Gannaway',
-            'thumbnail': 're:http://.*\.jpg',
+            'thumbnail': r're:http://.*\.jpg',
        },
    }, {
        'url': 'http://www.allocine.fr/video/player_gen_cmedia=19544709&cfilm=181290.html',
@ -43,7 +43,7 @@ class AllocineIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Dragons 2 - Bande annonce finale VF',
            'description': 'md5:6cdd2d7c2687d4c6aafe80a35e17267a',
-            'thumbnail': 're:http://.*\.jpg',
+            'thumbnail': r're:http://.*\.jpg',
        },
    }, {
        'url': 'http://www.allocine.fr/video/video-19550147/',
@ -53,7 +53,7 @@ class AllocineIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Faux Raccord N°123 - Les gaffes de Cliffhanger',
            'description': 'md5:bc734b83ffa2d8a12188d9eb48bb6354',
-            'thumbnail': 're:http://.*\.jpg',
+            'thumbnail': r're:http://.*\.jpg',
        },
    }]

--- a/youtube_dl/extractor/alphaporno.py
+++ b/youtube_dl/extractor/alphaporno.py
@ -19,7 +19,7 @@ class AlphaPornoIE(InfoExtractor):
            'display_id': 'sensual-striptease-porn-with-samantha-alexandra',
            'ext': 'mp4',
            'title': 'Sensual striptease porn with Samantha Alexandra',
-            'thumbnail': 're:https?://.*\.jpg$',
+            'thumbnail': r're:https?://.*\.jpg$',
            'timestamp': 1418694611,
            'upload_date': '20141216',
            'duration': 387,
--- a/youtube_dl/extractor/ard.py
+++ b/youtube_dl/extractor/ard.py
@ -253,7 +253,7 @@ class ARDIE(InfoExtractor):
            'duration': 2600,
            'title': 'Die Story im Ersten: Mission unter falscher Flagge',
            'upload_date': '20140804',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
        },
        'skip': 'HTTP Error 404: Not Found',
    }
--- a/youtube_dl/extractor/atresplayer.py
+++ b/youtube_dl/extractor/atresplayer.py
@ -30,7 +30,7 @@ class AtresPlayerIE(InfoExtractor):
                'title': 'Especial Solidario de Nochebuena',
                'description': 'md5:e2d52ff12214fa937107d21064075bf1',
                'duration': 5527.6,
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
            },
            'skip': 'This video is only available for registered users'
        },
@ -43,7 +43,7 @@ class AtresPlayerIE(InfoExtractor):
                'title': 'David Bustamante',
                'description': 'md5:f33f1c0a05be57f6708d4dd83a3b81c6',
                'duration': 1439.0,
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
            },
        },
        {
--- a/youtube_dl/extractor/atttechchannel.py
+++ b/youtube_dl/extractor/atttechchannel.py
@ -14,7 +14,7 @@ class ATTTechChannelIE(InfoExtractor):
            'ext': 'flv',
            'title': 'AT&T Archives : The UNIX System: Making Computers Easier to Use',
            'description': 'A 1982 film about UNIX is the foundation for software in use around Bell Labs and AT&T.',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'upload_date': '20140127',
        },
        'params': {
--- a/youtube_dl/extractor/audioboom.py
+++ b/youtube_dl/extractor/audioboom.py
@ -17,7 +17,7 @@ class AudioBoomIE(InfoExtractor):
            'description': 'Guest:   Nate Davis - NFL free agency,   Guest:   Stan Gans',
            'duration': 2245.72,
            'uploader': 'Steve Czaban',
-            'uploader_url': 're:https?://(?:www\.)?audioboom\.com/channel/steveczabanyahoosportsradio',
+            'uploader_url': r're:https?://(?:www\.)?audioboom\.com/channel/steveczabanyahoosportsradio',
        }
    }, {
        'url': 'https://audioboom.com/posts/4279833-3-09-2016-czaban-hour-3?t=0',
--- a/youtube_dl/extractor/azubu.py
+++ b/youtube_dl/extractor/azubu.py
@ -21,7 +21,7 @@ class AzubuIE(InfoExtractor):
                'ext': 'mp4',
                'title': '2014 HOT6 CUP LAST BIG MATCH Ro8 Day 1',
                'description': 'md5:d06bdea27b8cc4388a90ad35b5c66c01',
-                'thumbnail': 're:^https?://.*\.jpe?g',
+                'thumbnail': r're:^https?://.*\.jpe?g',
                'timestamp': 1417523507.334,
                'upload_date': '20141202',
                'duration': 9988.7,
@ -38,7 +38,7 @@ class AzubuIE(InfoExtractor):
                'ext': 'mp4',
                'title': 'Fnatic at Worlds 2014: Toyz - "I love Rekkles, he has amazing mechanics"',
                'description': 'md5:4a649737b5f6c8b5c5be543e88dc62af',
-                'thumbnail': 're:^https?://.*\.jpe?g',
+                'thumbnail': r're:^https?://.*\.jpe?g',
                'timestamp': 1410530893.320,
                'upload_date': '20140912',
                'duration': 172.385,
--- a/youtube_dl/extractor/bet.py
+++ b/youtube_dl/extractor/bet.py
@ -17,7 +17,7 @@ class BetIE(MTVServicesInfoExtractor):
                'description': 'President Obama urges persistence in confronting racism and bias.',
                'duration': 1534,
                'upload_date': '20141208',
-                'thumbnail': 're:(?i)^https?://.*\.jpg$',
+                'thumbnail': r're:(?i)^https?://.*\.jpg$',
                'subtitles': {
                    'en': 'mincount:2',
                }
@ -37,7 +37,7 @@ class BetIE(MTVServicesInfoExtractor):
                'description': 'A BET News special.',
                'duration': 1696,
                'upload_date': '20141125',
-                'thumbnail': 're:(?i)^https?://.*\.jpg$',
+                'thumbnail': r're:(?i)^https?://.*\.jpg$',
                'subtitles': {
                    'en': 'mincount:2',
                }
--- a/youtube_dl/extractor/bild.py
+++ b/youtube_dl/extractor/bild.py
@ -19,7 +19,7 @@ class BildIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Das können die  neuen iPads',
            'description': 'md5:a4058c4fa2a804ab59c00d7244bbf62f',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 196,
        }
    }
--- a/youtube_dl/extractor/bilibili.py
+++ b/youtube_dl/extractor/bilibili.py
@ -28,7 +28,7 @@ class BiliBiliIE(InfoExtractor):
            'duration': 308.315,
            'timestamp': 1398012660,
            'upload_date': '20140420',
-            'thumbnail': 're:^https?://.+\.jpg',
+            'thumbnail': r're:^https?://.+\.jpg',
            'uploader': '菊子桑',
            'uploader_id': '156160',
        },
--- a/youtube_dl/extractor/biobiochiletv.py
+++ b/youtube_dl/extractor/biobiochiletv.py
@ -19,7 +19,7 @@ class BioBioChileTVIE(InfoExtractor):
            'id': 'sobre-camaras-y-camarillas-parlamentarias',
            'ext': 'mp4',
            'title': 'Sobre Cámaras y camarillas parlamentarias',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'uploader': 'Fernando Atria',
        },
        'skip': 'URL expired and redirected to http://www.biobiochile.cl/portada/bbtv/index.html',
@ -31,7 +31,7 @@ class BioBioChileTVIE(InfoExtractor):
            'id': 'natalia-valdebenito-repasa-a-diputado-hasbun-paso-a-la-categoria-de-hablar-brutalidades',
            'ext': 'mp4',
            'title': 'Natalia Valdebenito repasa a diputado Hasbún: Pasó a la categoría de hablar brutalidades',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'uploader': 'Piangella Obrador',
        },
        'params': {
--- a/youtube_dl/extractor/byutv.py
+++ b/youtube_dl/extractor/byutv.py
@ -16,7 +16,7 @@ class BYUtvIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Season 5 Episode 5',
            'description': 'md5:e07269172baff037f8e8bf9956bc9747',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 1486.486,
        },
        'params': {
--- a/youtube_dl/extractor/camdemy.py
+++ b/youtube_dl/extractor/camdemy.py
@ -26,7 +26,7 @@ class CamdemyIE(InfoExtractor):
            'id': '5181',
            'ext': 'mp4',
            'title': 'Ch1-1 Introduction, Signals (02-23-2012)',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'creator': 'ss11spring',
            'duration': 1591,
            'upload_date': '20130114',
@ -41,7 +41,7 @@ class CamdemyIE(InfoExtractor):
            'id': '13885',
            'ext': 'mp4',
            'title': 'EverCam + Camdemy QuickStart',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'description': 'md5:2a9f989c2b153a2342acee579c6e7db6',
            'creator': 'evercam',
            'duration': 318,
--- a/youtube_dl/extractor/canvas.py
+++ b/youtube_dl/extractor/canvas.py
@ -17,7 +17,7 @@ class CanvasIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'De afspraak veilt voor de Warmste Week',
            'description': 'md5:24cb860c320dc2be7358e0e5aa317ba6',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 49.02,
        }
    }, {
@ -29,7 +29,7 @@ class CanvasIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Pieter 0167',
            'description': 'md5:943cd30f48a5d29ba02c3a104dc4ec4e',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 2553.08,
            'subtitles': {
                'nl': [{
@ -48,7 +48,7 @@ class CanvasIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Herbekijk Sorry voor alles',
            'description': 'md5:8bb2805df8164e5eb95d6a7a29dc0dd3',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 3788.06,
        },
        'params': {
--- a/youtube_dl/extractor/carambatv.py
+++ b/youtube_dl/extractor/carambatv.py
@ -21,7 +21,7 @@ class CarambaTVIE(InfoExtractor):
            'id': '191910501',
            'ext': 'mp4',
            'title': '[BadComedian] - Разборка в Маниле (Абсолютный обзор)',
-            'thumbnail': 're:^https?://.*\.jpg',
+            'thumbnail': r're:^https?://.*\.jpg',
            'duration': 2678.31,
        },
    }, {
@ -69,7 +69,7 @@ class CarambaTVPageIE(InfoExtractor):
            'id': '475222',
            'ext': 'flv',
            'title': '[BadComedian] - Разборка в Маниле (Абсолютный обзор)',
-            'thumbnail': 're:^https?://.*\.jpg',
+            'thumbnail': r're:^https?://.*\.jpg',
            # duration reported by videomore is incorrect
            'duration': int,
        },
--- a/youtube_dl/extractor/cbsnews.py
+++ b/youtube_dl/extractor/cbsnews.py
@ -39,7 +39,7 @@ class CBSNewsIE(CBSIE):
                'upload_date': '20140404',
                'timestamp': 1396650660,
                'uploader': 'CBSI-NEW',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
                'duration': 205,
                'subtitles': {
                    'en': [{
--- a/youtube_dl/extractor/ccc.py
+++ b/youtube_dl/extractor/ccc.py
@ -19,7 +19,7 @@ class CCCIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Introduction to Processor Design',
            'description': 'md5:df55f6d073d4ceae55aae6f2fd98a0ac',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'upload_date': '20131228',
            'timestamp': 1388188800,
            'duration': 3710,
@ -32,7 +32,7 @@ class CCCIE(InfoExtractor):
    def _real_extract(self, url):
        display_id = self._match_id(url)
        webpage = self._download_webpage(url, display_id)
-        event_id = self._search_regex("data-id='(\d+)'", webpage, 'event id')
+        event_id = self._search_regex(r"data-id='(\d+)'", webpage, 'event id')
        event_data = self._download_json('https://media.ccc.de/public/events/%s' % event_id, event_id)

        formats = []
--- a/youtube_dl/extractor/cda.py
+++ b/youtube_dl/extractor/cda.py
@ -24,7 +24,7 @@ class CDAIE(InfoExtractor):
            'height': 720,
            'title': 'Oto dlaczego przed zakrętem należy zwolnić.',
            'description': 'md5:269ccd135d550da90d1662651fcb9772',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'average_rating': float,
            'duration': 39
        }
@ -36,7 +36,7 @@ class CDAIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Lądowanie na lotnisku na Maderze',
            'description': 'md5:60d76b71186dcce4e0ba6d4bbdb13e1a',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'uploader': 'crash404',
            'view_count': int,
            'average_rating': float,
--- a/youtube_dl/extractor/ceskatelevize.py
+++ b/youtube_dl/extractor/ceskatelevize.py
@ -25,7 +25,7 @@ class CeskaTelevizeIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Hyde Park Civilizace',
            'description': 'md5:fe93f6eda372d150759d11644ebbfb4a',
-            'thumbnail': 're:^https?://.*\.jpg',
+            'thumbnail': r're:^https?://.*\.jpg',
            'duration': 3350,
        },
        'params': {
@ -39,7 +39,7 @@ class CeskaTelevizeIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Hyde Park Civilizace: Bonus 01 - En',
            'description': 'English Subtittles',
-            'thumbnail': 're:^https?://.*\.jpg',
+            'thumbnail': r're:^https?://.*\.jpg',
            'duration': 81.3,
        },
        'params': {
@ -52,7 +52,7 @@ class CeskaTelevizeIE(InfoExtractor):
        'info_dict': {
            'id': 402,
            'ext': 'mp4',
-            'title': 're:^ČT Sport \d{4}-\d{2}-\d{2} \d{2}:\d{2}$',
+            'title': r're:^ČT Sport \d{4}-\d{2}-\d{2} \d{2}:\d{2}$',
            'is_live': True,
        },
        'params': {
@ -80,7 +80,7 @@ class CeskaTelevizeIE(InfoExtractor):
                'id': '61924494877068022',
                'ext': 'mp4',
                'title': 'Queer: Bogotart (Queer)',
-                'thumbnail': 're:^https?://.*\.jpg',
+                'thumbnail': r're:^https?://.*\.jpg',
                'duration': 1558.3,
            },
        }],
--- a/youtube_dl/extractor/channel9.py
+++ b/youtube_dl/extractor/channel9.py
@ -31,7 +31,7 @@ class Channel9IE(InfoExtractor):
            'title': 'Developer Kick-Off Session: Stuff We Love',
            'description': 'md5:c08d72240b7c87fcecafe2692f80e35f',
            'duration': 4576,
-            'thumbnail': 're:http://.*\.jpg',
+            'thumbnail': r're:http://.*\.jpg',
            'session_code': 'KOS002',
            'session_day': 'Day 1',
            'session_room': 'Arena 1A',
@ -47,7 +47,7 @@ class Channel9IE(InfoExtractor):
            'title': 'Self-service BI with Power BI - nuclear testing',
            'description': 'md5:d1e6ecaafa7fb52a2cacdf9599829f5b',
            'duration': 1540,
-            'thumbnail': 're:http://.*\.jpg',
+            'thumbnail': r're:http://.*\.jpg',
            'authors': ['Mike Wilmot'],
        },
    }, {
@ -59,7 +59,7 @@ class Channel9IE(InfoExtractor):
            'title': 'Ranges for the Standard Library',
            'description': 'md5:2e6b4917677af3728c5f6d63784c4c5d',
            'duration': 5646,
-            'thumbnail': 're:http://.*\.jpg',
+            'thumbnail': r're:http://.*\.jpg',
        },
        'params': {
            'skip_download': True,
--- a/youtube_dl/extractor/charlierose.py
+++ b/youtube_dl/extractor/charlierose.py
@ -13,7 +13,7 @@ class CharlieRoseIE(InfoExtractor):
            'id': '27996',
            'ext': 'mp4',
            'title': 'Remembering Zaha Hadid',
-            'thumbnail': 're:^https?://.*\.jpg\?\d+',
+            'thumbnail': r're:^https?://.*\.jpg\?\d+',
            'description': 'We revisit past conversations with Zaha Hadid, in memory of the world renowned Iraqi architect.',
            'subtitles': {
                'en': [{
--- a/youtube_dl/extractor/cliphunter.py
+++ b/youtube_dl/extractor/cliphunter.py
@ -30,7 +30,7 @@ class CliphunterIE(InfoExtractor):
            'id': '1012420',
            'ext': 'flv',
            'title': 'Fun Jynx Maze solo',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'age_limit': 18,
        },
        'skip': 'Video gone',
@ -41,7 +41,7 @@ class CliphunterIE(InfoExtractor):
            'id': '2019449',
            'ext': 'mp4',
            'title': 'ShesNew - My booty girlfriend, Victoria Paradice\'s pussy filled with jizz',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'age_limit': 18,
        },
    }]
--- a/youtube_dl/extractor/clipsyndicate.py
+++ b/youtube_dl/extractor/clipsyndicate.py
@ -18,7 +18,7 @@ class ClipsyndicateIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Brick Briscoe',
            'duration': 612,
-            'thumbnail': 're:^https?://.+\.jpg',
+            'thumbnail': r're:^https?://.+\.jpg',
        },
    }, {
        'url': 'http://chic.clipsyndicate.com/video/play/5844117/shark_attack',
--- a/youtube_dl/extractor/clubic.py
+++ b/youtube_dl/extractor/clubic.py
@ -19,7 +19,7 @@ class ClubicIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Clubic Week 2.0 : le FBI se lance dans la photo d\u0092identité',
            'description': 're:Gueule de bois chez Nokia. Le constructeur a indiqué cette.*',
-            'thumbnail': 're:^http://img\.clubic\.com/.*\.jpg$',
+            'thumbnail': r're:^http://img\.clubic\.com/.*\.jpg$',
        }
    }, {
        'url': 'http://www.clubic.com/video/video-clubic-week-2-0-apple-iphone-6s-et-plus-mais-surtout-le-pencil-469792.html',
--- a/youtube_dl/extractor/collegerama.py
+++ b/youtube_dl/extractor/collegerama.py
@ -21,7 +21,7 @@ class CollegeRamaIE(InfoExtractor):
                'ext': 'mp4',
                'title': 'Een nieuwe wereld: waarden, bewustzijn en techniek van de mensheid 2.0.',
                'description': '',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
                'duration': 7713.088,
                'timestamp': 1413309600,
                'upload_date': '20141014',
--- a/youtube_dl/extractor/comedycentral.py
+++ b/youtube_dl/extractor/comedycentral.py
@ -79,7 +79,7 @@ class ToshIE(MTVServicesInfoExtractor):
                'ext': 'mp4',
                'title': 'Tosh.0|June 9, 2077|2|211|Twitter Users Share Summer Plans',
                'description': 'Tosh asked fans to share their summer plans.',
-                'thumbnail': 're:^https?://.*\.jpg',
+                'thumbnail': r're:^https?://.*\.jpg',
                # It's really reported to be published on year 2077
                'upload_date': '20770610',
                'timestamp': 3390510600,
--- a/youtube_dl/extractor/coub.py
+++ b/youtube_dl/extractor/coub.py
@ -20,7 +20,7 @@ class CoubIE(InfoExtractor):
            'id': '5u5n1',
            'ext': 'mp4',
            'title': 'The Matrix Moonwalk',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 4.6,
            'timestamp': 1428527772,
            'upload_date': '20150408',
--- a/youtube_dl/extractor/crackle.py
+++ b/youtube_dl/extractor/crackle.py
@ -14,7 +14,7 @@ class CrackleIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Everybody Respects A Bloody Nose',
            'description': 'Jerry is kaffeeklatsching in L.A. with funnyman J.B. Smoove (Saturday Night Live, Real Husbands of Hollywood). They’re headed for brew at 10 Speed Coffee in a 1964 Studebaker Avanti.',
-            'thumbnail': 're:^https?://.*\.jpg',
+            'thumbnail': r're:^https?://.*\.jpg',
            'duration': 906,
            'series': 'Comedians In Cars Getting Coffee',
            'season_number': 8,
--- a/youtube_dl/extractor/criterion.py
+++ b/youtube_dl/extractor/criterion.py
@ -14,7 +14,7 @@ class CriterionIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Le Samouraï',
            'description': 'md5:a2b4b116326558149bef81f76dcbb93f',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
        }
    }

--- a/youtube_dl/extractor/crooksandliars.py
+++ b/youtube_dl/extractor/crooksandliars.py
@ -16,7 +16,7 @@ class CrooksAndLiarsIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Fox & Friends Says Protecting Atheists From Discrimination Is Anti-Christian!',
            'description': 'md5:e1a46ad1650e3a5ec7196d432799127f',
-            'thumbnail': 're:^https?://.*\.jpg',
+            'thumbnail': r're:^https?://.*\.jpg',
            'timestamp': 1428207000,
            'upload_date': '20150405',
            'uploader': 'Heather',
--- a/youtube_dl/extractor/crunchyroll.py
+++ b/youtube_dl/extractor/crunchyroll.py
@ -142,7 +142,7 @@ class CrunchyrollIE(CrunchyrollBaseIE):
            'ext': 'flv',
            'title': 'Culture Japan Episode 1 – Rebuilding Japan after the 3.11',
            'description': 'md5:2fbc01f90b87e8e9137296f37b461c12',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'uploader': 'Danny Choo Network',
            'upload_date': '20120213',
        },
@ -158,7 +158,7 @@ class CrunchyrollIE(CrunchyrollBaseIE):
            'ext': 'mp4',
            'title': 'Re:ZERO -Starting Life in Another World- Episode 5 – The Morning of Our Promise Is Still Distant',
            'description': 'md5:97664de1ab24bbf77a9c01918cb7dca9',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'uploader': 'TV TOKYO',
            'upload_date': '20160508',
        },
--- a/youtube_dl/extractor/ctsnews.py
+++ b/youtube_dl/extractor/ctsnews.py
@ -28,7 +28,7 @@ class CtsNewsIE(InfoExtractor):
            'ext': 'mp4',
            'title': '韓國31歲童顏男 貌如十多歲小孩',
            'description': '越有年紀的人，越希望看起來年輕一點，而南韓卻有一位31歲的男子，看起來像是11、12歲的小孩，身...',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'timestamp': 1378205880,
            'upload_date': '20130903',
        }
@ -41,7 +41,7 @@ class CtsNewsIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'iPhone6熱銷 蘋果財報亮眼',
            'description': 'md5:f395d4f485487bb0f992ed2c4b07aa7d',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'upload_date': '20150128',
            'uploader_id': 'TBSCTS',
            'uploader': '中華電視公司',
--- a/youtube_dl/extractor/cultureunplugged.py
+++ b/youtube_dl/extractor/cultureunplugged.py
@ -21,7 +21,7 @@ class CultureUnpluggedIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'The Next, Best West',
            'description': 'md5:0423cd00833dea1519cf014e9d0903b1',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'creator': 'Coldstream Creative',
            'duration': 2203,
            'view_count': int,
--- a/youtube_dl/extractor/dailymotion.py
+++ b/youtube_dl/extractor/dailymotion.py
@ -58,7 +58,7 @@ class DailymotionIE(DailymotionBaseInfoExtractor):
                'ext': 'mp4',
                'title': 'Steam Machine Models, Pricing Listed on Steam Store - IGN News',
                'description': 'Several come bundled with the Steam Controller.',
-                'thumbnail': 're:^https?:.*\.(?:jpg|png)$',
+                'thumbnail': r're:^https?:.*\.(?:jpg|png)$',
                'duration': 74,
                'timestamp': 1425657362,
                'upload_date': '20150306',
--- a/youtube_dl/extractor/daum.py
+++ b/youtube_dl/extractor/daum.py
@ -32,7 +32,7 @@ class DaumIE(InfoExtractor):
            'title': '마크 헌트 vs 안토니오 실바',
            'description': 'Mark Hunt vs Antonio Silva',
            'upload_date': '20131217',
-            'thumbnail': 're:^https?://.*\.(?:jpg|png)',
+            'thumbnail': r're:^https?://.*\.(?:jpg|png)',
            'duration': 2117,
            'view_count': int,
            'comment_count': int,
@ -45,7 +45,7 @@ class DaumIE(InfoExtractor):
            'title': '1297회, \'아빠 아들로 태어나길 잘 했어\' 민수, 감동의 눈물[아빠 어디가] 20150118',
            'description': 'md5:79794514261164ff27e36a21ad229fc5',
            'upload_date': '20150604',
-            'thumbnail': 're:^https?://.*\.(?:jpg|png)',
+            'thumbnail': r're:^https?://.*\.(?:jpg|png)',
            'duration': 154,
            'view_count': int,
            'comment_count': int,
@ -61,7 +61,7 @@ class DaumIE(InfoExtractor):
            'title': '01-Korean War ( Trouble on the horizon )',
            'description': '\nKorean War 01\nTrouble on the horizon\n전쟁의 먹구름',
            'upload_date': '20080223',
-            'thumbnail': 're:^https?://.*\.(?:jpg|png)',
+            'thumbnail': r're:^https?://.*\.(?:jpg|png)',
            'duration': 249,
            'view_count': int,
            'comment_count': int,
@ -139,7 +139,7 @@ class DaumClipIE(InfoExtractor):
            'title': 'DOTA 2GETHER 시즌2 6회 - 2부',
            'description': 'DOTA 2GETHER 시즌2 6회 - 2부',
            'upload_date': '20130831',
-            'thumbnail': 're:^https?://.*\.(?:jpg|png)',
+            'thumbnail': r're:^https?://.*\.(?:jpg|png)',
            'duration': 3868,
            'view_count': int,
        },
--- a/youtube_dl/extractor/dbtv.py
+++ b/youtube_dl/extractor/dbtv.py
@ -17,7 +17,7 @@ class DBTVIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Skulle teste ut fornøyelsespark, men kollegaen var bare opptatt av bikinikroppen',
            'description': 'md5:1504a54606c4dde3e4e61fc97aa857e0',
-            'thumbnail': 're:https?://.*\.jpg',
+            'thumbnail': r're:https?://.*\.jpg',
            'timestamp': 1404039863,
            'upload_date': '20140629',
            'duration': 69.544,
--- a/youtube_dl/extractor/dctp.py
+++ b/youtube_dl/extractor/dctp.py
@ -17,7 +17,7 @@ class DctpTvIE(InfoExtractor):
            'title': 'Videoinstallation für eine Kaufhausfassade',
            'description': 'Kurzfilm',
            'upload_date': '20110407',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
        },
    }

--- a/youtube_dl/extractor/deezer.py
+++ b/youtube_dl/extractor/deezer.py
@ -19,7 +19,7 @@ class DeezerPlaylistIE(InfoExtractor):
            'id': '176747451',
            'title': 'Best!',
            'uploader': 'Anonymous',
-            'thumbnail': 're:^https?://cdn-images.deezer.com/images/cover/.*\.jpg$',
+            'thumbnail': r're:^https?://cdn-images.deezer.com/images/cover/.*\.jpg$',
        },
        'playlist_count': 30,
        'skip': 'Only available in .de',
--- a/youtube_dl/extractor/dhm.py
+++ b/youtube_dl/extractor/dhm.py
@ -17,7 +17,7 @@ class DHMIE(InfoExtractor):
            'title': 'MARSHALL PLAN AT WORK IN WESTERN GERMANY, THE',
            'description': 'md5:1fabd480c153f97b07add61c44407c82',
            'duration': 660,
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
        },
    }, {
        'url': 'http://www.dhm.de/filmarchiv/02-mapping-the-wall/peter-g/rolle-1/',
@ -26,7 +26,7 @@ class DHMIE(InfoExtractor):
            'id': 'rolle-1',
            'ext': 'flv',
            'title': 'ROLLE 1',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
        },
    }]

--- a/youtube_dl/extractor/digiteka.py
+++ b/youtube_dl/extractor/digiteka.py
@ -36,7 +36,7 @@ class DigitekaIE(InfoExtractor):
            'id': 's8uk0r',
            'ext': 'mp4',
            'title': 'Loi sur la fin de vie: le texte prévoit un renforcement des directives anticipées',
-            'thumbnail': 're:^https?://.*\.jpg',
+            'thumbnail': r're:^https?://.*\.jpg',
            'duration': 74,
            'upload_date': '20150317',
            'timestamp': 1426604939,
@ -50,7 +50,7 @@ class DigitekaIE(InfoExtractor):
            'id': 'xvpfp8',
            'ext': 'mp4',
            'title': 'Two - C\'est La Vie (clip)',
-            'thumbnail': 're:^https?://.*\.jpg',
+            'thumbnail': r're:^https?://.*\.jpg',
            'duration': 233,
            'upload_date': '20150224',
            'timestamp': 1424760500,
--- a/youtube_dl/extractor/douyutv.py
+++ b/youtube_dl/extractor/douyutv.py
@ -26,8 +26,8 @@ class DouyuTVIE(InfoExtractor):
            'display_id': 'iseven',
            'ext': 'flv',
            'title': 're:^清晨醒脑！T-ara根本停不下来！ [0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}$',
-            'description': 're:.*m7show@163\.com.*',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'description': r're:.*m7show@163\.com.*',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'uploader': '7师傅',
            'is_live': True,
        },
@ -42,7 +42,7 @@ class DouyuTVIE(InfoExtractor):
            'ext': 'flv',
            'title': 're:^小漠从零单排记！——CSOL2躲猫猫 [0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}$',
            'description': 'md5:746a2f7a253966a06755a912f0acc0d2',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'uploader': 'douyu小漠',
            'is_live': True,
        },
@ -57,8 +57,8 @@ class DouyuTVIE(InfoExtractor):
            'display_id': '17732',
            'ext': 'flv',
            'title': 're:^清晨醒脑！T-ara根本停不下来！ [0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}$',
-            'description': 're:.*m7show@163\.com.*',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'description': r're:.*m7show@163\.com.*',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'uploader': '7师傅',
            'is_live': True,
        },
--- a/youtube_dl/extractor/dramafever.py
+++ b/youtube_dl/extractor/dramafever.py
@ -76,7 +76,7 @@ class DramaFeverIE(DramaFeverBaseIE):
            'description': 'md5:a8eec7942e1664a6896fcd5e1287bfd0',
            'episode': 'Episode 1',
            'episode_number': 1,
-            'thumbnail': 're:^https?://.*\.jpg',
+            'thumbnail': r're:^https?://.*\.jpg',
            'timestamp': 1404336058,
            'upload_date': '20140702',
            'duration': 343,
@ -94,7 +94,7 @@ class DramaFeverIE(DramaFeverBaseIE):
            'description': 'md5:3ff2ee8fedaef86e076791c909cf2e91',
            'episode': 'Mnet Asian Music Awards 2015 - Part 3',
            'episode_number': 4,
-            'thumbnail': 're:^https?://.*\.jpg',
+            'thumbnail': r're:^https?://.*\.jpg',
            'timestamp': 1450213200,
            'upload_date': '20151215',
            'duration': 5602,
--- a/youtube_dl/extractor/drbonanza.py
+++ b/youtube_dl/extractor/drbonanza.py
@ -20,7 +20,7 @@ class DRBonanzaIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Talkshowet - Leonard Cohen',
            'description': 'md5:8f34194fb30cd8c8a30ad8b27b70c0ca',
-            'thumbnail': 're:^https?://.*\.(?:gif|jpg)$',
+            'thumbnail': r're:^https?://.*\.(?:gif|jpg)$',
            'timestamp': 1295537932,
            'upload_date': '20110120',
            'duration': 3664,
@ -36,7 +36,7 @@ class DRBonanzaIE(InfoExtractor):
            'ext': 'mp3',
            'title': 'EM fodbold 1992 Danmark - Tyskland finale Transmission',
            'description': 'md5:501e5a195749480552e214fbbed16c4e',
-            'thumbnail': 're:^https?://.*\.(?:gif|jpg)$',
+            'thumbnail': r're:^https?://.*\.(?:gif|jpg)$',
            'timestamp': 1223274900,
            'upload_date': '20081006',
            'duration': 7369,
--- a/youtube_dl/extractor/drtuber.py
+++ b/youtube_dl/extractor/drtuber.py
@ -22,7 +22,7 @@ class DrTuberIE(InfoExtractor):
            'like_count': int,
            'comment_count': int,
            'categories': ['Babe', 'Blonde', 'Erotic', 'Outdoor', 'Softcore', 'Solo'],
-            'thumbnail': 're:https?://.*\.jpg$',
+            'thumbnail': r're:https?://.*\.jpg$',
            'age_limit': 18,
        }
    }, {
--- a/youtube_dl/extractor/dumpert.py
+++ b/youtube_dl/extractor/dumpert.py
@ -21,7 +21,7 @@ class DumpertIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Ik heb nieuws voor je',
            'description': 'Niet schrikken hoor',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
        }
    }, {
        'url': 'http://www.dumpert.nl/embed/6675421/dc440fe7/',
--- a/youtube_dl/extractor/eagleplatform.py
+++ b/youtube_dl/extractor/eagleplatform.py
@ -31,7 +31,7 @@ class EaglePlatformIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Навальный вышел на свободу',
            'description': 'md5:d97861ac9ae77377f3f20eaf9d04b4f5',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 87,
            'view_count': int,
            'age_limit': 0,
@ -45,7 +45,7 @@ class EaglePlatformIE(InfoExtractor):
            'id': '12820',
            'ext': 'mp4',
            'title': "'O Sole Mio",
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 216,
            'view_count': int,
        },
--- a/youtube_dl/extractor/einthusan.py
+++ b/youtube_dl/extractor/einthusan.py
@ -19,7 +19,7 @@ class EinthusanIE(InfoExtractor):
                'id': '2447',
                'ext': 'mp4',
                'title': 'Ek Villain',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
                'description': 'md5:9d29fc91a7abadd4591fb862fa560d93',
            }
        },
@ -30,7 +30,7 @@ class EinthusanIE(InfoExtractor):
                'id': '1671',
                'ext': 'mp4',
                'title': 'Soodhu Kavvuum',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
                'description': 'md5:b40f2bf7320b4f9414f3780817b2af8c',
            }
        },
--- a/youtube_dl/extractor/eroprofile.py
+++ b/youtube_dl/extractor/eroprofile.py
@ -22,7 +22,7 @@ class EroProfileIE(InfoExtractor):
            'display_id': 'sexy-babe-softcore',
            'ext': 'm4v',
            'title': 'sexy babe softcore',
-            'thumbnail': 're:https?://.*\.jpg',
+            'thumbnail': r're:https?://.*\.jpg',
            'age_limit': 18,
        }
    }, {
@ -32,7 +32,7 @@ class EroProfileIE(InfoExtractor):
            'id': '1133519',
            'ext': 'm4v',
            'title': 'Try It On Pee_cut_2.wmv - 4shared.com - file sharing - download movie file',
-            'thumbnail': 're:https?://.*\.jpg',
+            'thumbnail': r're:https?://.*\.jpg',
            'age_limit': 18,
        },
        'skip': 'Requires login',
--- a/youtube_dl/extractor/escapist.py
+++ b/youtube_dl/extractor/escapist.py
@ -45,7 +45,7 @@ class EscapistIE(InfoExtractor):
            'ext': 'mp4',
            'description': "Baldur's Gate: Original, Modded or Enhanced Edition? I'll break down what you can expect from the new Baldur's Gate: Enhanced Edition.",
            'title': "Breaking Down Baldur's Gate",
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 264,
            'uploader': 'The Escapist',
        }
@ -57,7 +57,7 @@ class EscapistIE(InfoExtractor):
            'ext': 'mp4',
            'description': 'This week, Zero Punctuation reviews Evolve.',
            'title': 'Evolve - One vs Multiplayer',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 304,
            'uploader': 'The Escapist',
        }
--- a/youtube_dl/extractor/esri.py
+++ b/youtube_dl/extractor/esri.py
@ -22,7 +22,7 @@ class EsriVideoIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'ArcGIS Online - Developing Applications',
            'description': 'Jeremy Bartley demonstrates how to develop applications with ArcGIS Online.',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 185,
            'upload_date': '20120419',
        }
--- a/youtube_dl/extractor/europa.py
+++ b/youtube_dl/extractor/europa.py
@ -23,7 +23,7 @@ class EuropaIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'TRADE - Wikileaks on TTIP',
            'description': 'NEW  LIVE EC Midday press briefing of 11/08/2015',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'upload_date': '20150811',
            'duration': 34,
            'view_count': int,
--- a/youtube_dl/extractor/expotv.py
+++ b/youtube_dl/extractor/expotv.py
@ -17,7 +17,7 @@ class ExpoTVIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'NYX Butter Lipstick Little Susie',
            'description': 'Goes on like butter, but looks better!',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'uploader': 'Stephanie S.',
            'upload_date': '20150520',
            'view_count': int,
--- a/youtube_dl/extractor/fc2.py
+++ b/youtube_dl/extractor/fc2.py
@ -133,7 +133,7 @@ class FC2EmbedIE(InfoExtractor):
            'id': '201403223kCqB3Ez',
            'ext': 'flv',
            'title': 'プリズン･ブレイク S1-01 マイケル 【吹替】',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
        },
    }

--- a/youtube_dl/extractor/firsttv.py
+++ b/youtube_dl/extractor/firsttv.py
@ -26,7 +26,7 @@ class FirstTVIE(InfoExtractor):
            'id': '40049',
            'ext': 'mp4',
            'title': 'Гость Людмила Сенчина. Наедине со всеми. Выпуск от 12.02.2015',
-            'thumbnail': 're:^https?://.*\.(?:jpg|JPG)$',
+            'thumbnail': r're:^https?://.*\.(?:jpg|JPG)$',
            'upload_date': '20150212',
            'duration': 2694,
        },
@ -37,7 +37,7 @@ class FirstTVIE(InfoExtractor):
            'id': '364746',
            'ext': 'mp4',
            'title': 'Весенняя аллергия. Доброе утро. Фрагмент выпуска от 07.04.2016',
-            'thumbnail': 're:^https?://.*\.(?:jpg|JPG)$',
+            'thumbnail': r're:^https?://.*\.(?:jpg|JPG)$',
            'upload_date': '20160407',
            'duration': 179,
            'formats': 'mincount:3',
--- a/youtube_dl/extractor/fivetv.py
+++ b/youtube_dl/extractor/fivetv.py
@ -25,7 +25,7 @@ class FiveTVIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Россияне выбрали имя для общенациональной платежной системы',
            'description': 'md5:a8aa13e2b7ad36789e9f77a74b6de660',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 180,
        },
    }, {
@ -35,7 +35,7 @@ class FiveTVIE(InfoExtractor):
            'ext': 'mp4',
            'title': '3D принтер',
            'description': 'md5:d76c736d29ef7ec5c0cf7d7c65ffcb41',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 180,
        },
    }, {
@ -44,7 +44,7 @@ class FiveTVIE(InfoExtractor):
            'id': 'glavnoe',
            'ext': 'mp4',
            'title': 'Итоги недели с 8 по 14 июня 2015 года',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
        },
    }, {
        'url': 'http://www.5-tv.ru/glavnoe/broadcasts/508645/',
--- a/youtube_dl/extractor/fktv.py
+++ b/youtube_dl/extractor/fktv.py
@ -19,7 +19,7 @@ class FKTVIE(InfoExtractor):
            'id': '1',
            'ext': 'mp4',
            'title': 'Folge 1 vom 10. April 2007',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
        },
    }

--- a/youtube_dl/extractor/foxgay.py
+++ b/youtube_dl/extractor/foxgay.py
@ -20,7 +20,7 @@ class FoxgayIE(InfoExtractor):
            'title': 'Fuck Turkish-style',
            'description': 'md5:6ae2d9486921891efe89231ace13ffdf',
            'age_limit': 18,
-            'thumbnail': 're:https?://.*\.jpg$',
+            'thumbnail': r're:https?://.*\.jpg$',
        },
    }

--- a/youtube_dl/extractor/foxnews.py
+++ b/youtube_dl/extractor/foxnews.py
@ -22,7 +22,7 @@ class FoxNewsIE(AMPIE):
                'duration': 265,
                'timestamp': 1304411491,
                'upload_date': '20110503',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
            },
        },
        {
@ -36,7 +36,7 @@ class FoxNewsIE(AMPIE):
                'duration': 292,
                'timestamp': 1417662047,
                'upload_date': '20141204',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
            },
            'params': {
                # m3u8 download
@ -111,7 +111,7 @@ class FoxNewsInsiderIE(InfoExtractor):
            'description': 'Is campus censorship getting out of control?',
            'timestamp': 1472168725,
            'upload_date': '20160825',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
        },
        'params': {
            # m3u8 download
--- a/youtube_dl/extractor/franceculture.py
+++ b/youtube_dl/extractor/franceculture.py
@ -17,7 +17,7 @@ class FranceCultureIE(InfoExtractor):
            'display_id': 'rendez-vous-au-pays-des-geeks',
            'ext': 'mp3',
            'title': 'Rendez-vous au pays des geeks',
-            'thumbnail': 're:^https?://.*\\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'upload_date': '20140301',
            'vcodec': 'none',
        }
--- a/youtube_dl/extractor/francetv.py
+++ b/youtube_dl/extractor/francetv.py
@ -168,7 +168,7 @@ class FranceTvInfoIE(FranceTVBaseInfoExtractor):
            'id': 'NI_173343',
            'ext': 'mp4',
            'title': 'Les entreprises familiales : le secret de la réussite',
-            'thumbnail': 're:^https?://.*\.jpe?g$',
+            'thumbnail': r're:^https?://.*\.jpe?g$',
            'timestamp': 1433273139,
            'upload_date': '20150602',
        },
@ -184,7 +184,7 @@ class FranceTvInfoIE(FranceTVBaseInfoExtractor):
            'ext': 'mp4',
            'title': 'Olivier Monthus, réalisateur de "Bretagne, le choix de l’Armor"',
            'description': 'md5:a3264114c9d29aeca11ced113c37b16c',
-            'thumbnail': 're:^https?://.*\.jpe?g$',
+            'thumbnail': r're:^https?://.*\.jpe?g$',
            'timestamp': 1458300695,
            'upload_date': '20160318',
        },
--- a/youtube_dl/extractor/funimation.py
+++ b/youtube_dl/extractor/funimation.py
@ -29,7 +29,7 @@ class FunimationIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Air - 1 - Breeze',
            'description': 'md5:1769f43cd5fc130ace8fd87232207892',
-            'thumbnail': 're:https?://.*\.jpg',
+            'thumbnail': r're:https?://.*\.jpg',
        },
        'skip': 'Access without user interaction is forbidden by CloudFlare, and video removed',
    }, {
@ -40,7 +40,7 @@ class FunimationIE(InfoExtractor):
            'ext': 'mp4',
            'title': '.hack//SIGN - 1 - Role Play',
            'description': 'md5:b602bdc15eef4c9bbb201bb6e6a4a2dd',
-            'thumbnail': 're:https?://.*\.jpg',
+            'thumbnail': r're:https?://.*\.jpg',
        },
        'skip': 'Access without user interaction is forbidden by CloudFlare',
    }, {
@ -51,7 +51,7 @@ class FunimationIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Attack on Titan: Junior High - Broadcast Dub Preview',
            'description': 'md5:f8ec49c0aff702a7832cd81b8a44f803',
-            'thumbnail': 're:https?://.*\.(?:jpg|png)',
+            'thumbnail': r're:https?://.*\.(?:jpg|png)',
        },
        'skip': 'Access without user interaction is forbidden by CloudFlare',
    }]
--- a/youtube_dl/extractor/funnyordie.py
+++ b/youtube_dl/extractor/funnyordie.py
@ -17,7 +17,7 @@ class FunnyOrDieIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Heart-Shaped Box: Literal Video Version',
            'description': 'md5:ea09a01bc9a1c46d9ab696c01747c338',
-            'thumbnail': 're:^http:.*\.jpg$',
+            'thumbnail': r're:^http:.*\.jpg$',
        },
    }, {
        'url': 'http://www.funnyordie.com/embed/e402820827',
@ -26,7 +26,7 @@ class FunnyOrDieIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Please Use This Song (Jon Lajoie)',
            'description': 'Please use this to sell something.  www.jonlajoie.com',
-            'thumbnail': 're:^http:.*\.jpg$',
+            'thumbnail': r're:^http:.*\.jpg$',
        },
        'params': {
            'skip_download': True,
--- a/youtube_dl/extractor/gamersyde.py
+++ b/youtube_dl/extractor/gamersyde.py
@ -20,7 +20,7 @@ class GamersydeIE(InfoExtractor):
            'ext': 'mp4',
            'duration': 372,
            'title': 'Bloodborne - Birth of a hero',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
        }
    }

--- a/youtube_dl/extractor/gamespot.py
+++ b/youtube_dl/extractor/gamespot.py
@ -63,7 +63,7 @@ class GameSpotIE(OnceIE):
            streams, ('progressive_hd', 'progressive_high', 'progressive_low'))
        if progressive_url and manifest_url:
            qualities_basename = self._search_regex(
-                '/([^/]+)\.csmil/',
+                r'/([^/]+)\.csmil/',
                manifest_url, 'qualities basename', default=None)
            if qualities_basename:
                QUALITIES_RE = r'((,\d+)+,?)'
--- a/youtube_dl/extractor/gamestar.py
+++ b/youtube_dl/extractor/gamestar.py
@ -18,7 +18,7 @@ class GameStarIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Hobbit 3: Die Schlacht der Fünf Heere - Teaser-Trailer zum dritten Teil',
            'description': 'Der Teaser-Trailer zu Hobbit 3: Die Schlacht der Fünf Heere zeigt einige Szenen aus dem dritten Teil der Saga und kündigt den...',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'timestamp': 1406542020,
            'upload_date': '20140728',
            'duration': 17
--- a/youtube_dl/extractor/gazeta.py
+++ b/youtube_dl/extractor/gazeta.py
@ -16,7 +16,7 @@ class GazetaIE(InfoExtractor):
            'ext': 'mp4',
            'title': '«70–80 процентов гражданских в Донецке на грани голода»',
            'description': 'md5:38617526050bd17b234728e7f9620a71',
-            'thumbnail': 're:^https?://.*\.jpg',
+            'thumbnail': r're:^https?://.*\.jpg',
        },
        'skip': 'video not found',
    }, {
--- a/youtube_dl/extractor/generic.py
+++ b/youtube_dl/extractor/generic.py
@ -239,7 +239,7 @@ class GenericIE(InfoExtractor):
                'ext': 'mp4',
                'title': 'Tikibad ontruimd wegens brand',
                'description': 'md5:05ca046ff47b931f9b04855015e163a4',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
                'duration': 33,
            },
            'params': {
@ -300,7 +300,7 @@ class GenericIE(InfoExtractor):
                'ext': 'mp4',
                'upload_date': '20130224',
                'uploader_id': 'TheVerge',
-                'description': 're:^Chris Ziegler takes a look at the\.*',
+                'description': r're:^Chris Ziegler takes a look at the\.*',
                'uploader': 'The Verge',
                'title': 'First Firefox OS phones side-by-side',
            },
@ -539,7 +539,7 @@ class GenericIE(InfoExtractor):
                'id': 'f4dafcad-ff21-423d-89b5-146cfd89fa1e',
                'ext': 'mp4',
                'title': 'Ужастики, русский трейлер (2015)',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
                'duration': 153,
            }
        },
@ -759,7 +759,7 @@ class GenericIE(InfoExtractor):
                'duration': 48,
                'timestamp': 1401537900,
                'upload_date': '20140531',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
            },
        },
        # Wistia embed
@ -1031,7 +1031,7 @@ class GenericIE(InfoExtractor):
                'ext': 'mp4',
                'title': 'Навальный вышел на свободу',
                'description': 'md5:d97861ac9ae77377f3f20eaf9d04b4f5',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
                'duration': 87,
                'view_count': int,
                'age_limit': 0,
@ -1045,7 +1045,7 @@ class GenericIE(InfoExtractor):
                'id': '12820',
                'ext': 'mp4',
                'title': "'O Sole Mio",
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
                'duration': 216,
                'view_count': int,
            },
@ -1058,7 +1058,7 @@ class GenericIE(InfoExtractor):
                'ext': 'mp4',
                'title': 'Тайны перевала Дятлова • 1 серия 2 часть',
                'description': 'Документальный сериал-расследование одной из самых жутких тайн ХХ века',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
                'duration': 694,
                'age_limit': 0,
            },
@ -1070,7 +1070,7 @@ class GenericIE(InfoExtractor):
                'id': '3519514',
                'ext': 'mp4',
                'title': 'Joe Dirt 2 Beautiful Loser Teaser Trailer',
-                'thumbnail': 're:^https?://.*\.png$',
+                'thumbnail': r're:^https?://.*\.png$',
                'duration': 45.115,
            },
        },
@ -1153,7 +1153,7 @@ class GenericIE(InfoExtractor):
                'id': '300346',
                'ext': 'mp4',
                'title': '中一中男師變性 全校師生力挺',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
            },
            'params': {
                # m3u8 download
@ -1199,7 +1199,7 @@ class GenericIE(InfoExtractor):
                'ext': 'mp4',
                'title': 'Sauvons les abeilles ! - Le débat',
                'description': 'md5:d9082128b1c5277987825d684939ca26',
-                'thumbnail': 're:^https?://.*\.jpe?g$',
+                'thumbnail': r're:^https?://.*\.jpe?g$',
                'timestamp': 1434970506,
                'upload_date': '20150622',
                'uploader': 'Public Sénat',
@ -1213,7 +1213,7 @@ class GenericIE(InfoExtractor):
                'id': '2855',
                'ext': 'mp4',
                'title': 'Don’t Understand Bitcoin? This Man Will Mumble An Explanation At You',
-                'thumbnail': 're:^https?://.*\.jpe?g$',
+                'thumbnail': r're:^https?://.*\.jpe?g$',
                'uploader': 'ClickHole',
                'uploader_id': 'clickhole',
            }
--- a/youtube_dl/extractor/giantbomb.py
+++ b/youtube_dl/extractor/giantbomb.py
@ -23,7 +23,7 @@ class GiantBombIE(InfoExtractor):
            'title': 'Quick Look: Destiny: The Dark Below',
            'description': 'md5:0aa3aaf2772a41b91d44c63f30dfad24',
            'duration': 2399,
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
        }
    }

--- a/youtube_dl/extractor/giga.py
+++ b/youtube_dl/extractor/giga.py
@ -24,7 +24,7 @@ class GigaIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Anime Awesome: Chihiros Reise ins Zauberland – Das Beste kommt zum Schluss',
            'description': 'md5:afdf5862241aded4718a30dff6a57baf',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 578,
            'timestamp': 1414749706,
            'upload_date': '20141031',
--- a/youtube_dl/extractor/glide.py
+++ b/youtube_dl/extractor/glide.py
@ -14,7 +14,7 @@ class GlideIE(InfoExtractor):
            'id': 'UZF8zlmuQbe4mr+7dCiQ0w==',
            'ext': 'mp4',
            'title': "Damon's Glide message",
-            'thumbnail': 're:^https?://.*?\.cloudfront\.net/.*\.jpg$',
+            'thumbnail': r're:^https?://.*?\.cloudfront\.net/.*\.jpg$',
        }
    }

--- a/youtube_dl/extractor/godtube.py
+++ b/youtube_dl/extractor/godtube.py
@ -23,7 +23,7 @@ class GodTubeIE(InfoExtractor):
                'timestamp': 1205712000,
                'uploader': 'beverlybmusic',
                'upload_date': '20080317',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
            },
        },
    ]
--- a/youtube_dl/extractor/goshgay.py
+++ b/youtube_dl/extractor/goshgay.py
@ -19,7 +19,7 @@ class GoshgayIE(InfoExtractor):
            'id': '299069',
            'ext': 'flv',
            'title': 'DIESEL SFW XXX Video',
-            'thumbnail': 're:^http://.*\.jpg$',
+            'thumbnail': r're:^http://.*\.jpg$',
            'duration': 80,
            'age_limit': 18,
        }
--- a/youtube_dl/extractor/hbo.py
+++ b/youtube_dl/extractor/hbo.py
@ -120,7 +120,7 @@ class HBOIE(HBOBaseIE):
            'id': '1437839',
            'ext': 'mp4',
            'title': 'Ep. 64 Clip: Encryption',
-            'thumbnail': 're:https?://.*\.jpg$',
+            'thumbnail': r're:https?://.*\.jpg$',
            'duration': 1072,
        }
    }
@ -141,7 +141,7 @@ class HBOEpisodeIE(HBOBaseIE):
            'display_id': 'ep-52-inside-the-episode',
            'ext': 'mp4',
            'title': 'Ep. 52: Inside the Episode',
-            'thumbnail': 're:https?://.*\.jpg$',
+            'thumbnail': r're:https?://.*\.jpg$',
            'duration': 240,
        },
    }, {
--- a/youtube_dl/extractor/hearthisat.py
+++ b/youtube_dl/extractor/hearthisat.py
@ -25,7 +25,7 @@ class HearThisAtIE(InfoExtractor):
            'id': '150939',
            'ext': 'wav',
            'title': 'Moofi - Dr. Kreep',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'timestamp': 1421564134,
            'description': 'Listen to Dr. Kreep by Moofi on hearthis.at - Modular, Eurorack, Mutable Intruments Braids, Valhalla-DSP',
            'upload_date': '20150118',
@ -46,7 +46,7 @@ class HearThisAtIE(InfoExtractor):
            'description': 'Listen to DJ Jim Hopkins -  Totally Bitchin\' 80\'s Dance Mix! by TwitchSF on hearthis.at - Dance',
            'upload_date': '20160328',
            'timestamp': 1459186146,
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'comment_count': int,
            'view_count': int,
            'like_count': int,
--- a/youtube_dl/extractor/heise.py
+++ b/youtube_dl/extractor/heise.py
@ -29,7 +29,7 @@ class HeiseIE(InfoExtractor):
            'timestamp': 1411812600,
            'upload_date': '20140927',
            'description': 'In uplink-Episode 3.3 geht es darum, wie man sich von Cloud-Anbietern emanzipieren kann, worauf man beim Kauf einer Tastatur achten sollte und was Smartphones über uns verraten.',
-            'thumbnail': 're:^https?://.*\.jpe?g$',
+            'thumbnail': r're:^https?://.*\.jpe?g$',
        }
    }

--- a/youtube_dl/extractor/hellporno.py
+++ b/youtube_dl/extractor/hellporno.py
@ -20,7 +20,7 @@ class HellPornoIE(InfoExtractor):
            'display_id': 'dixie-is-posing-with-naked-ass-very-erotic',
            'ext': 'mp4',
            'title': 'Dixie is posing with naked ass very erotic',
-            'thumbnail': 're:https?://.*\.jpg$',
+            'thumbnail': r're:https?://.*\.jpg$',
            'age_limit': 18,
        }
    }, {
--- a/youtube_dl/extractor/historicfilms.py
+++ b/youtube_dl/extractor/historicfilms.py
@ -14,7 +14,7 @@ class HistoricFilmsIE(InfoExtractor):
            'ext': 'mov',
            'title': 'Historic Films: GP-7',
            'description': 'md5:1a86a0f3ac54024e419aba97210d959a',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 2096,
        },
    }
--- a/youtube_dl/extractor/hitbox.py
+++ b/youtube_dl/extractor/hitbox.py
@ -25,7 +25,7 @@ class HitboxIE(InfoExtractor):
            'alt_title': 'hitboxlive - Aug 9th #6',
            'description': '',
            'ext': 'mp4',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'duration': 215.1666,
            'resolution': 'HD 720p',
            'uploader': 'hitboxlive',
@ -163,7 +163,7 @@ class HitboxLiveIE(HitboxIE):
            if cdn.get('rtmpSubscribe') is True:
                continue
            base_url = cdn.get('netConnectionUrl')
-            host = re.search('.+\.([^\.]+\.[^\./]+)/.+', base_url).group(1)
+            host = re.search(r'.+\.([^\.]+\.[^\./]+)/.+', base_url).group(1)
            if base_url not in servers:
                servers.append(base_url)
                for stream in cdn.get('bitrates'):
--- a/youtube_dl/extractor/hornbunny.py
+++ b/youtube_dl/extractor/hornbunny.py
@ -20,7 +20,7 @@ class HornBunnyIE(InfoExtractor):
            'duration': 550,
            'age_limit': 18,
            'view_count': int,
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
        }
    }

--- a/youtube_dl/extractor/howstuffworks.py
+++ b/youtube_dl/extractor/howstuffworks.py
@ -21,7 +21,7 @@ class HowStuffWorksIE(InfoExtractor):
                'title': 'Cool Jobs - Iditarod Musher',
                'description': 'Cold sleds, freezing temps and warm dog breath... an Iditarod musher\'s dream. Kasey-Dee Gardner jumps on a sled to find out what the big deal is.',
                'display_id': 'cool-jobs-iditarod-musher',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
                'duration': 161,
            },
            'skip': 'Video broken',
@ -34,7 +34,7 @@ class HowStuffWorksIE(InfoExtractor):
                'title': 'Survival Zone: Food and Water In the Savanna',
                'description': 'Learn how to find both food and water while trekking in the African savannah. In this video from the Discovery Channel.',
                'display_id': 'survival-zone-food-and-water-in-the-savanna',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
            },
        },
        {
@ -45,7 +45,7 @@ class HowStuffWorksIE(InfoExtractor):
                'title': 'Sword Swallowing #1 by Dan Meyer',
                'description': 'Video footage (1 of 3) used by permission of the owner Dan Meyer through Sword Swallowers Association International <www.swordswallow.org>',
                'display_id': 'sword-swallowing-1-by-dan-meyer',
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
            },
        },
        {
--- a/youtube_dl/extractor/huajiao.py
+++ b/youtube_dl/extractor/huajiao.py
@ -20,7 +20,7 @@ class HuajiaoIE(InfoExtractor):
            'title': '#新人求关注#',
            'description': 're:.*',
            'duration': 2424.0,
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'timestamp': 1475866459,
            'upload_date': '20161007',
            'uploader': 'Penny_余姿昀',
--- a/youtube_dl/extractor/huffpost.py
+++ b/youtube_dl/extractor/huffpost.py
@ -52,7 +52,7 @@ class HuffPostIE(InfoExtractor):

        thumbnails = []
        for url in filter(None, data['images'].values()):
-            m = re.match('.*-([0-9]+x[0-9]+)\.', url)
+            m = re.match(r'.*-([0-9]+x[0-9]+)\.', url)
            if not m:
                continue
            thumbnails.append({
--- a/youtube_dl/extractor/indavideo.py
+++ b/youtube_dl/extractor/indavideo.py
@ -19,7 +19,7 @@ class IndavideoEmbedIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Cicatánc',
            'description': '',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'uploader': 'cukiajanlo',
            'uploader_id': '83729',
            'timestamp': 1439193826,
@ -102,7 +102,7 @@ class IndavideoIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Vicces cica',
            'description': 'Játszik a tablettel. :D',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'uploader': 'Jet_Pack',
            'uploader_id': '491217',
            'timestamp': 1390821212,
--- a/youtube_dl/extractor/instagram.py
+++ b/youtube_dl/extractor/instagram.py
@ -22,7 +22,7 @@ class InstagramIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Video by naomipq',
            'description': 'md5:1f17f0ab29bd6fe2bfad705f58de3cb8',
-            'thumbnail': 're:^https?://.*\.jpg',
+            'thumbnail': r're:^https?://.*\.jpg',
            'timestamp': 1371748545,
            'upload_date': '20130620',
            'uploader_id': 'naomipq',
@ -38,7 +38,7 @@ class InstagramIE(InfoExtractor):
            'id': 'BA-pQFBG8HZ',
            'ext': 'mp4',
            'title': 'Video by britneyspears',
-            'thumbnail': 're:^https?://.*\.jpg',
+            'thumbnail': r're:^https?://.*\.jpg',
            'timestamp': 1453760977,
            'upload_date': '20160125',
            'uploader_id': 'britneyspears',
@ -169,7 +169,7 @@ class InstagramUserIE(InfoExtractor):
                'id': '614605558512799803_462752227',
                'ext': 'mp4',
                'title': '#Porsche Intelligent Performance.',
-                'thumbnail': 're:^https?://.*\.jpg',
+                'thumbnail': r're:^https?://.*\.jpg',
                'uploader': 'Porsche',
                'uploader_id': 'porsche',
                'timestamp': 1387486713,
--- a/youtube_dl/extractor/ir90tv.py
+++ b/youtube_dl/extractor/ir90tv.py
@ -14,7 +14,7 @@ class Ir90TvIE(InfoExtractor):
            'id': '95719',
            'ext': 'mp4',
            'title': 'شایعات نقل و انتقالات مهم فوتبال اروپا 94/02/18',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
        }
    }, {
        'url': 'http://www.90tv.ir/video/95719/%D8%B4%D8%A7%DB%8C%D8%B9%D8%A7%D8%AA-%D9%86%D9%82%D9%84-%D9%88-%D8%A7%D9%86%D8%AA%D9%82%D8%A7%D9%84%D8%A7%D8%AA-%D9%85%D9%87%D9%85-%D9%81%D9%88%D8%AA%D8%A8%D8%A7%D9%84-%D8%A7%D8%B1%D9%88%D9%BE%D8%A7-940218',
--- a/youtube_dl/extractor/ivi.py
+++ b/youtube_dl/extractor/ivi.py
@ -28,7 +28,7 @@ class IviIE(InfoExtractor):
                'title': 'Иван Васильевич меняет профессию',
                'description': 'md5:b924063ea1677c8fe343d8a72ac2195f',
                'duration': 5498,
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
            },
            'skip': 'Only works from Russia',
        },
@ -46,7 +46,7 @@ class IviIE(InfoExtractor):
                'episode': 'Дело Гольдберга (1 часть)',
                'episode_number': 1,
                'duration': 2655,
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
            },
            'skip': 'Only works from Russia',
        },
@ -60,7 +60,7 @@ class IviIE(InfoExtractor):
                'title': 'Кукла',
                'description': 'md5:ffca9372399976a2d260a407cc74cce6',
                'duration': 5599,
-                'thumbnail': 're:^https?://.*\.jpg$',
+                'thumbnail': r're:^https?://.*\.jpg$',
            },
            'skip': 'Only works from Russia',
        }
--- a/youtube_dl/extractor/izlesene.py
+++ b/youtube_dl/extractor/izlesene.py
@ -29,7 +29,7 @@ class IzleseneIE(InfoExtractor):
                'ext': 'mp4',
                'title': 'Sevinçten Çıldırtan Doğum Günü Hediyesi',
                'description': 'md5:253753e2655dde93f59f74b572454f6d',
-                'thumbnail': 're:^https?://.*\.jpg',
+                'thumbnail': r're:^https?://.*\.jpg',
                'uploader_id': 'pelikzzle',
                'timestamp': int,
                'upload_date': '20140702',
@ -44,7 +44,7 @@ class IzleseneIE(InfoExtractor):
                'id': '17997',
                'ext': 'mp4',
                'title': 'Tarkan Dortmund 2006 Konseri',
-                'thumbnail': 're:^https://.*\.jpg',
+                'thumbnail': r're:^https://.*\.jpg',
                'uploader_id': 'parlayankiz',
                'timestamp': int,
                'upload_date': '20061112',
--- a/youtube_dl/extractor/jamendo.py
+++ b/youtube_dl/extractor/jamendo.py
@ -17,7 +17,7 @@ class JamendoIE(InfoExtractor):
            'display_id': 'stories-from-emona-i',
            'ext': 'flac',
            'title': 'Stories from Emona I',
-            'thumbnail': 're:^https?://.*\.jpg'
+            'thumbnail': r're:^https?://.*\.jpg'
        }
    }

--- a/youtube_dl/extractor/jove.py
+++ b/youtube_dl/extractor/jove.py
@ -21,7 +21,7 @@ class JoveIE(InfoExtractor):
                'ext': 'mp4',
                'title': 'Electrode Positioning and Montage in Transcranial Direct Current Stimulation',
                'description': 'md5:015dd4509649c0908bc27f049e0262c6',
-                'thumbnail': 're:^https?://.*\.png$',
+                'thumbnail': r're:^https?://.*\.png$',
                'upload_date': '20110523',
            }
        },
@ -33,7 +33,7 @@ class JoveIE(InfoExtractor):
                'ext': 'mp4',
                'title': 'Culturing Caenorhabditis elegans in Axenic Liquid Media and Creation of Transgenic Worms by Microparticle Bombardment',
                'description': 'md5:35ff029261900583970c4023b70f1dc9',
-                'thumbnail': 're:^https?://.*\.png$',
+                'thumbnail': r're:^https?://.*\.png$',
                'upload_date': '20140802',
            }
        },
--- a/youtube_dl/extractor/karrierevideos.py
+++ b/youtube_dl/extractor/karrierevideos.py
@ -20,7 +20,7 @@ class KarriereVideosIE(InfoExtractor):
            'ext': 'flv',
            'title': 'AltenpflegerIn',
            'description': 'md5:dbadd1259fde2159a9b28667cb664ae2',
-            'thumbnail': 're:^http://.*\.png',
+            'thumbnail': r're:^http://.*\.png',
        },
        'params': {
            # rtmp download
@ -34,7 +34,7 @@ class KarriereVideosIE(InfoExtractor):
            'ext': 'flv',
            'title': 'Väterkarenz und neue Chancen für Mütter - "Baby - was nun?"',
            'description': 'md5:97092c6ad1fd7d38e9d6a5fdeb2bcc33',
-            'thumbnail': 're:^http://.*\.png',
+            'thumbnail': r're:^http://.*\.png',
        },
        'params': {
            # rtmp download
--- a/youtube_dl/extractor/keezmovies.py
+++ b/youtube_dl/extractor/keezmovies.py
@ -27,7 +27,7 @@ class KeezMoviesIE(InfoExtractor):
            'display_id': 'petite-asian-lady-mai-playing-in-bathtub',
            'ext': 'mp4',
            'title': 'Petite Asian Lady Mai Playing In Bathtub',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
            'view_count': int,
            'age_limit': 18,
        }
--- a/youtube_dl/extractor/ketnet.py
+++ b/youtube_dl/extractor/ketnet.py
@ -13,7 +13,7 @@ class KetnetIE(InfoExtractor):
            'ext': 'mp4',
            'title': 'Gluur mee op de filmset en op Pennenzakkenrock',
            'description': 'Gluur mee met Ghost Rockers op de filmset',
-            'thumbnail': 're:^https?://.*\.jpg$',
+            'thumbnail': r're:^https?://.*\.jpg$',
        }
    }, {
        'url': 'https://www.ketnet.be/kijken/karrewiet/uitzending-8-september-2016',
--- a/youtube_dl/extractor/krasview.py
+++ b/youtube_dl/extractor/krasview.py
@ -23,7 +23,7 @@ class KrasViewIE(InfoExtractor):
            'title': 'Снег, лёд, заносы',
            'description': 'Снято в городе Нягань, в Ханты-Мансийском автономном округе.',
            'duration': 27,
-            'thumbnail': 're:^https?://.*\.jpg',
+            'thumbnail': r're:^https?://.*\.jpg',
        },
        'params': {
            'skip_download': 'Not accessible from Travis CI server',
--- a/Show More
+++ b/Show More