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"^(?!\d\d?[ex]\d\d?)(?:\[(?:[-\w\s]+)*\] )?(.*?)[-_. ]?(?:[\{\(\[]?(?:dvdrip|[-._\b]ita|[-._\b]eng|xvid| cd\d|dvdscr|\w{1,5}rip|divx|\d+p|\d{4}).*?)?\.([\w]{2,3})$", flags=re.IGNORECASE | re.MULTILINE) test_str = ("22. Non Puoi Sempre Dire Quello Kent Ti Pare.avi\n" "6x13 - Una festa spettacolare.mkv\n" "After earth.avi\n" "Capitan America Il Primo Vendicatore 480p.mkv\n" "Dylan Dog 2010 Ac3.avi\n" "FUMETTOLOGY - 11 - PUNTATA SPECIALE.by.IperB.mkv\n" "Guida galattica per autostoppisti [BDrip 720p ITA-ENG sub ITA-ENG].mkv\n" "Hook - Capitan Uncino (1991).avi\n" "Kick Ass 2.avi\n" "Lemony Snicket - Una serie di sfortunati eventi 2004.avi\n" "Monty Python e il Sacro Graal.avi\n" "Pacific_Rim_2004_BdRip_1080p_ITA_ENG_ANONIMO_CREW.mkv\n" "Pompeii.2014.iTALiAN.DTS.Dual.1080p.BluRay.x264-TRtD_TeaM.mkv\n" "Ralph Spaccatutto.avi\n" "Red Hot Chili Simpson.avi\n" "RobinHood-UnUomoInCalzamaglia.ENG.srt\n" "The.Lego.Movie.2014.iTALiAN.AC3.DUAL.1080p.BluRay.x264-TrTd_TeaM.mkv\n" "The.Pagemaster.1994.1080p.BluRyMux.by.gemini9669.mkv\n" "Tom.&.Jerry.Avventure.Giganti.Giant.Adventure.2013.DVDRip.ITA.AC3.ENG.Mp3-MLN.avi\n" "Tron 480p.mkv\n" "Viaggi Spazio - Temporali.avi\n" "Vite Aliene.avi\n" "[DivX - ITA] The Simpson - Natale con i Simpsons 2003.avi\n" "[SUB ITA] Monty Python e il Sacro Graal.srt\n" "[Sub ENG] Monty Python e il Sacro Graal.srt\n" "codeschool_1322.mp4\n" "corto.avi\n" "film xvid.ENG.srt\n" "[rec].mp4\n" "recita.mp4\n" "regeng.flv") 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