Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
Processing...

Test String

Code Generator

Language

Generated Code

import re regex = re.compile(r""" ^((?<ShowNameA>.*[^ (_.]) [ (_.]+ (?!720p|1080p|264|265) ( # Shows with preceding Year #(?<ShowYearA>\d{4}) ([ (_.]+ ( (?<ShowYearA>(?:19|20)\d{2}) ([ (_.]+ ( (?<SeasonA>\d{1,2})x(?<EpisodeA>\d{1,2}) |(?<SeasonB>[0-3]?[0-9])(?<EpisodeB>\d{2}) |S(?<SeasonC>\d{1,2})E(?<EpisodeC>\d{1,2}) ) )? | # Shows without preceding Year (?<!\d{4})( S(?<SeasonD>\d{1,2})E(?<EpisodeD>\d{1,2}) |(?<SeasonF>[0-3]?[0-9])(?<EpisodeF>\d{2}) |(?<SeasonE>\d{1,2})x(?<EpisodeE>\d{1,2})) ) |(?<ShowNameB>.+)) """, flags=re.MULTILINE | re.VERBOSE | re.IGNORECASE) test_str = ("666.Park.Avenue.S01E04.HDTV.x264-LOL.[VTV].mp4\n" "Rick and Morty S01E01 - Pilot [1080p] [h.265].mkv\n" "The.4400.204.mkv\n" "The Flash (2014) - S01E05 - City of Heroes\n" "family.guy.1316.hdtv-lol.mp4\n" "castle.2009.722.hdtv-lol.mp4\n" "Orange.Is.The.New.Black.S01E01.720p.WEBRip.AAC2.0.H.264-Abjex.mkv\n" "Top.Gear.2013.20x03.720p.HDTV.x264-FoV.mkv\n" "archer.2009.S04E13\n" "louie.506.hdtv-lol.mp4\n" "Sense8.S01E05.Art.Is.Like.Religion.WEBRip.x264-SNEAkY.mp4\n" "The.Leftovers.S01E03.HDTV.x264-KILLERS.mp4\n" "space 1999 1975\n" "Top.Gear.20x03.720p.HDTV.x264-FoV.mkv\n" "Space: 1999 (1975)\n" "Space.1999.1975.S01E01\n" "marvels.agents.of.s.h.i.e.l.d.s01e13.720p.hdtv.x264-killers.mkv\n" "Supernatural.S10E12.720p.HDTV.X264-DIMENSION.mkv\n" "12.Monkeys.S01E09.720p.HDTV.x264-KILLERS.mkv\n" "space 1999.(1975)\n" "Space.1999.S01E01\n" "v.2009.S01E13.the.title.avi\n" "Teen.wolf.S04E12.HDTV.x264\n" "The Newsroom 2X04 Conseguenze Indesiderate ITA ENG BDMux -iGM+GiuseppeTnT mkv\n" "Continuum S04E01 Lost Hours -LGC mkv\n" "Royal Pains S07E04 HEVC piemonster mkv\n" "Sense8.S01E05.Art.Is.Like.Religion.WEBRip.x264-SNEAkY.mp4\n" "Family.Guy.S11.Special-200.Episodes.Later.720p.HDTV.X264-DIMENSION") matches = regex.finditer(test_str) for match_num, match in enumerate(matches, start=1): print(f"Match {match_num} was found at {match.start()}-{match.end()}: {match.group()}") for group_num, group in enumerate(match.groups(), start=1): print(f"Group {group_num} found at {match.start(group_num)}-{match.end(group_num)}: {group}")

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Python, please visit: https://docs.python.org/3/library/re.html