Regular Expressions 101

Save & Share

  • Regex Version: ver. 3
  • Update Regex
    ctrl+⇧+s
  • Save new Regex
    ctrl+s
  • Add to Community Library

Flavor

  • PCRE2 (PHP >=7.3)
  • PCRE (PHP <7.3)
  • ECMAScript (JavaScript)
  • Python
  • Golang
  • Java 8
  • .NET 7.0 (C#)
  • Rust
  • Regex Flavor Guide

Function

  • Match
  • Substitution
  • List
  • Unit Tests

Tools

Sponsors
There are currently no sponsors. Become a sponsor today!
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
No Match

`
`
gm

Test String

Code Generator

Language

Generated Code

# coding=utf8 # the above tag defines encoding for this document and is for Python 2.x compatibility import re regex = r"(^\W{3}(\s|\s\s)(“|\")\W{1,}\d+\W+\d+|(^\W+:|^.{1,}:)(\s|\s\s)\W{1,}\d{1,}\s\W{1,}\d{1,}(\s|\s\s)\W+)" test_str = ("Сбербанк России ОАО г.Москва\n" "Банк получателя\n" "инн 502204278650\n" "Внимание' Оплата данного счета означает согласие с условиями поставки товара. Уведомление об оплате\n" "обязательно, в противном случае не гарантируется наличие товара на складе товар отпускается пс факту\n" "прихода денег на prc Поставщика. самовывозам, при наличии довереанссти а паспорта\n" "Образец заполнения платежного поручения\n" "70 шт\n" "кпп о\n" "Сч. N?\n" "Сч, N?\n" "044525225\n" "30101810400000000225\n" "40802810740200101005\n" "Краснова Татьяна Валерьевна”\n" "Пол атель\n" "Счет N? 196 от 17.12.08\n" "инн 502204278650 КПП o\n" "Поставщик:\n" "“ИП Краснова Татьяна Валерьевна“\n" "140411, Рф, Моск. обл.,г.Коломна,ул.Зеленая,д.ВА,кв.9\n" "Покупатель: ИНН 5022017021 КПП 502201001 околоменский дом ребенка“\n" "2\n" "Товар\n" "крем ЛАСКОВАЯ МАМА детский л 20мп Москва\n" "Шампунь детский ЛАСКОВАЯ МАМА звомлг•пераое\n" "шение“\" (Москва\n" "КОЛ-ВО\n" "96\n" "Ед.\n" "Цена\n" "Итого:\n" "Сумма\n" "3360 ос\n" "2Ђва 00\n" "6'048.00\n" "Всего наименований 2. на сумму 6048,00 руб.\n" "Шесть тысяч сорок восемь рублей 00 копеек\n" "Руководитель\n" "[Краснова Т.В.}\n" "Бухгалтер\n") matches = re.finditer(regex, test_str, re.MULTILINE) for matchNum, match in enumerate(matches, start=1): print ("Match {matchNum} was found at {start}-{end}: {match}".format(matchNum = matchNum, start = match.start(), end = match.end(), match = match.group())) for groupNum in range(0, len(match.groups())): groupNum = groupNum + 1 print ("Group {groupNum} found at {start}-{end}: {group}".format(groupNum = groupNum, start = match.start(groupNum), end = match.end(groupNum), group = match.group(groupNum))) # Note: for Python 2.7 compatibility, use ur"" to prefix the regex and u"" to prefix the test string and substitution.

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