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"^(?=.*\b(DV|DoVi|Dolby[ .]?Vision)\b)(?=.*\b(HDR(10)?(?!\+))\b)", flags=re.MULTILINE | re.IGNORECASE) test_str = ("# DV HDR10\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.HDR.DoVi.HEVC.REMUX-RlsGrp\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.DoVi.HDR.HEVC.REMUX-RlsGrp\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.DoVi.HDR10.HEVC.REMUX-RlsGrp\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.DV.HDR.HEVC.REMUX-RlsGrp\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.HDR.DV.HEVC.REMUX-RlsGrp\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.DV.HDR10.HEVC.REMUX-RlsGrp\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.HDR10.DV.HEVC.REMUX-RlsGrp\n" "Movie (2015) [Remux-2160p][TrueHD Atmos 7.1][DV HDR10][HEVC]-RlsGrp\n\n" "# DV\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.DV.HEVC.REMUX-RlsGrp\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.DoVi.HEVC.REMUX-RlsGrp\n" "Movie (2015) [Remux-2160p][TrueHD Atmos 7.1][DV][HEVC]-RlsGrp\n\n" "# this should be picked up as DV and will be DV HDR10 on import\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.DV.HDR10Plus.HEVC.REMUX-RlsGrp\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.DV.HDR10P.HEVC.REMUX-RlsGrp\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.DV.HDR10+.HEVC.REMUX-RlsGrp\n\n" "# DV HLG\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.DV.HLG.HEVC.REMUX-RlsGrp\n" "Movie (2015) [Remux-2160p][TrueHD Atmos 7.1][DV HLG][HEVC]-RlsGrp\n\n" "# DV SDR\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.DV.SDR.HEVC.REMUX-RlsGrp\n" "Movie (2015) [Remux-2160p][TrueHD Atmos 7.1][DV SDR][HEVC]-RlsGrp\n\n" "# HDR10Plus\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.HDR10Plus.HEVC.REMUX-RlsGrp\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.HDR10P.HEVC.REMUX-RlsGrp\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.HDR10+.HEVC.REMUX-RlsGrp\n" "Movie (2015) [Remux-2160p][TrueHD Atmos 7.1][HDR10Plus][HEVC]-RlsGrp\n\n" "# HDR10\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.HDR10.HEVC.REMUX-RlsGrp\n" "Movie (2015) [Remux-2160p][TrueHD Atmos 7.1][HDR10][HEVC]-RlsGrp\n\n" "# HDR\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.HDR.HEVC.REMUX-RlsGrp\n\n" "# HDR (undefined) - This one we might best keep as separate conditions ?\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.HEVC.REMUX-RlsGrp\n\n" "# PQ\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.PQ.HEVC.REMUX-RlsGrp\n" "Movie (2015) [Remux-2160p][TrueHD Atmos 7.1][PQ][HEVC]-RlsGrp\n\n" "# HLG/HLG10\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.HLG.HEVC.REMUX-RlsGrp\n" "Movie.2015.UHD.BluRay.2160p.TrueHD.Atmos.7.1.HLG10.HEVC.REMUX-RlsGrp\n" "Movie (2015) [Remux-2160p][TrueHD Atmos 7.1][HLG10][HEVC]-RlsGrp\n\n" "# DON'T MATCH\n" "adventure\n" "hdruin\n\n") 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