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"[幹乾淦贛干肏操糙去草塞賽]?[林賃吝零靈齡拎恁你他她它祂牠]([馬马量梁良糧涼娘妹媽]|老[師蘇詩屍濕溼]|奶奶|祖?(嬤|媽|罵))(的|樂|叻|垃|勒|咧|([基唧雞機激][掰歪]))?|[靠尻哭][杯倍背貝輩悖北盃悲卑揹腰邀妖夭幺么]|([基唧雞機激](車|[教轎窖嶠叫較趴葩]|[掰歪]))|(([魯盧擄虜盧爐]|[假呷吃甲賈卡]|[衝沖充銃欉謥]?[三殺沙砂啥])[小洨曉])|(破[麻目])|([俗卒][仔臘辣])|[賤屌肏操糙]|(幹(?![麻嘛嗎]|(啥|[蛇神什甚]麼|[好壞]事)))|(靠(?!在|的|他|你|妳|她))|([林賃吝拎恁你][霸爸北背])|([懶藍覽攬欖][教轎窖嶠叫較趴葩])|([白北度杜渡肚虎唬][爛濫纜藍覽懶])|(智[缺障仗丈瘴])|(去你的)|((?i)GG\s?IN\s?IN)|(想[樓揉])|(ㄈㄈ尺)|((?i)ccr|fuck|hell|shit|ass(hole)?|idiot|damn|bitch|phycho|bastard|Whore|Slut)") test_str = ("幹\n" "幹嘛\n" "幹麻\n" "幹甚麼好事\n" "幹他媽的\n" "幹你娘\n" "乾 \n" "乾淨\n" "乾林老師\n" "靠 \n" "靠北\n" "靠你了\n\n" "靠北邊\n" "靠杯\n" "靠背\n" "靠盃\n" "靠腰\n" "靠夭\n" "哭夭\n" "幹靈糧\n" "去你的\n" "去你媽的\n\n" "林北\n" "恁北\n" "恁娘\n" "恁祖媽\n" "機掰\n" "賤\n" "俗辣\n" "他媽的\n" "覽趴\n" "懶趴\n" "北爛\n" "盧小\n" "魯洨\n" "色龜\n" "肚爛\n" "放屁\n" "屁股\n" "屌\n" "啥小\n" "三小\n" "操\n" "屁\n" "唬爛\n" "龜公\n" "他奶奶的\n" "犯賤\n" "機車\n" "智缺\n" "你娘卡好\n" "林老師\n" "破麻\n" "賽\n" "操卒仔\n" "操機歪\n" "糙機掰\n" "無懶趴\n" "卡小\n" "吃小\n" "死魚眼\n" "炭甲查某\n" "糙你妹\n" "GGININ\n" "GG IN IN\n" "GG IN IN DER\n" "gginin\n" "可惡 想揉\n" "想揉\n" "ㄈㄈ尺\n\n\n" "英文原生：\n" "CCR\n" "Fuck off\n" "Fuck\n" "mother fucker\n" "You SOB\n" "son of a bitch\n" "Go to hell\n" "Shit-head\n" "Asshole\n" "You beast\n" "Shit\n" "fart\n" "Idiot\n" "damn it \n" "God damn\n" "God damn it\n" "hypocrite\n" "ass hole\n" "ass licker\n" "bitch \n" "phycho\n" "bastard\n" "Whore\n" "Slut\n" "Shit-head\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