Regular Expressions 101

Save & Share

  • Regex Version: ver. 2
  • 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

Substitution

Processing...

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"(<tr[^>]*>)(?:\s*<t[dh][^>]*>[^<]*</t[dh]>){4}" test_str = ("<table >\n" " <thead>\n" " <tr>\n" " <th></th>\n" " <th>Купить до</th>\n" " <th>Реестр</th>\n" " <th>Дата выплаты</th>\n" " <th>Период </th>\n" " <th >Дивиденд</th>\n" " <th >Доходность</th>\n" " <th >Цена на закрытии</th>\n" " </tr>\n" " </thead>\n" " <tbody>\n" " <tr >\n" " <td > </td>\n" " <td >3 дек 2021</td>\n" " <td >7 дек 2021</td>\n" " <td >21 дек 2021</td>\n" " <td >3КВ 2021</td>\n" " <td >13,33 ₽</td>\n" " <td >6,06%</td>\n" " <td></td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >3 сен 2021</td>\n" " <td >7 сен 2021</td>\n" " <td >21 сен 2021</td>\n" " <td >2КВ 2021</td>\n" " <td >13,62 ₽</td>\n" " <td >5,53%</td>\n" " <td > 246,32 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >21 июн 2021</td>\n" " <td >23 июн 2021</td>\n" " <td >7 июл 2021</td>\n" " <td >1КВ 2021</td>\n" " <td >7,71 ₽</td>\n" " <td >2,98%</td>\n" " <td > 259,04 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >7 мая 2021</td>\n" " <td >11 мая 2021</td>\n" " <td >25 мая 2021</td>\n" " <td >4КВ 2020</td>\n" " <td >7,25 ₽</td>\n" " <td >2,63%</td>\n" " <td > 276,02 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >25 дек 2020</td>\n" " <td >29 дек 2020</td>\n" " <td >12 янв 2021</td>\n" " <td >3КВ 2020</td>\n" " <td >6,43 ₽</td>\n" " <td >2,87%</td>\n" " <td > 224,36 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >8 окт 2020</td>\n" " <td >12 окт 2020</td>\n" " <td >26 окт 2020</td>\n" " <td >2КВ 2020</td>\n" " <td >4,75 ₽</td>\n" " <td >2,73%</td>\n" " <td > 174,28 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >9 июл 2020</td>\n" " <td >13 июл 2020</td>\n" " <td >27 июл 2020</td>\n" " <td >1КВ 2020</td>\n" " <td >3,21 ₽</td>\n" " <td >2,29%</td>\n" " <td > 140,22 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >5 июн 2020</td>\n" " <td >9 июн 2020</td>\n" " <td >23 июн 2020</td>\n" " <td >4КВ 2019</td>\n" " <td >3,12 ₽</td>\n" " <td >2,2%</td>\n" " <td > 142 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >6 янв 2020</td>\n" " <td >9 янв 2020</td>\n" " <td >23 янв 2020</td>\n" " <td >3КВ 2019</td>\n" " <td >3,22 ₽</td>\n" " <td >2,27%</td>\n" " <td > 141,94 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >8 окт 2019</td>\n" " <td >10 окт 2019</td>\n" " <td >24 окт 2019</td>\n" " <td >2КВ 2019</td>\n" " <td >3,68 ₽</td>\n" " <td >2,8%</td>\n" " <td > 131,58 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >17 июн 2019</td>\n" " <td >19 июн 2019</td>\n" " <td >3 июл 2019</td>\n" " <td >1КВ 2019</td>\n" " <td >7,34 ₽</td>\n" " <td >4,03%</td>\n" " <td > 182 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >2 мая 2019</td>\n" " <td >6 мая 2019</td>\n" " <td >20 мая 2019</td>\n" " <td >4КВ 2018</td>\n" " <td >5,80 ₽</td>\n" " <td >3,31%</td>\n" " <td > 175,08 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >4 янв 2019</td>\n" " <td >9 янв 2019</td>\n" " <td >23 янв 2019</td>\n" " <td >3КВ 2018</td>\n" " <td >6,04 ₽</td>\n" " <td >3,88%</td>\n" " <td > 155,68 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >10 окт 2018</td>\n" " <td >12 окт 2018</td>\n" " <td >26 окт 2018</td>\n" " <td >2КВ 2018</td>\n" " <td >5,24 ₽</td>\n" " <td >2,97%</td>\n" " <td > 176,34 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >18 июн 2018</td>\n" " <td >20 июн 2018</td>\n" " <td >4 июл 2018</td>\n" " <td >4КВ 2017</td>\n" " <td >3,36 ₽</td>\n" " <td >2,01%</td>\n" " <td > 167,3 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >18 июн 2018</td>\n" " <td >20 июн 2018</td>\n" " <td >4 июл 2018</td>\n" " <td >1КВ 2018</td>\n" " <td >5,73 ₽</td>\n" " <td >3,42%</td>\n" " <td > 167,3 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >4 янв 2018</td>\n" " <td >9 янв 2018</td>\n" " <td >23 янв 2018</td>\n" " <td >3КВ 2017</td>\n" " <td >5,13 ₽</td>\n" " <td >3,35%</td>\n" " <td > 153 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >10 окт 2017</td>\n" " <td >12 окт 2017</td>\n" " <td >26 окт 2017</td>\n" " <td >2КВ 2017</td>\n" " <td >3,20 ₽</td>\n" " <td >2,33%</td>\n" " <td > 137,4 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >9 июн 2017</td>\n" " <td >14 июн 2017</td>\n" " <td >28 июн 2017</td>\n" " <td >4КВ 2016</td>\n" " <td >3,38 ₽</td>\n" " <td >3,1%</td>\n" " <td > 109,19 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >9 июн 2017</td>\n" " <td >14 июн 2017</td>\n" " <td >28 июн 2017</td>\n" " <td >1КВ 2017</td>\n" " <td >2,35 ₽</td>\n" " <td >2,15%</td>\n" " <td > 109,19 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >5 янв 2017</td>\n" " <td >9 янв 2017</td>\n" " <td >23 янв 2017</td>\n" " <td >3КВ 2016</td>\n" " <td >3,63 ₽</td>\n" " <td >3,13%</td>\n" " <td > 116 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >10 окт 2016</td>\n" " <td >12 окт 2016</td>\n" " <td >26 окт 2016</td>\n" " <td >2КВ 2016</td>\n" " <td >1,08 ₽</td>\n" " <td >1,23%</td>\n" " <td > 87,85 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >9 июн 2016</td>\n" " <td >14 июн 2016</td>\n" " <td >28 июн 2016</td>\n" " <td >1КВ 2016</td>\n" " <td >1,13 ₽</td>\n" " <td >1,4%</td>\n" " <td > 80,51 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >9 июн 2016</td>\n" " <td >14 июн 2016</td>\n" " <td >28 июн 2016</td>\n" " <td >4КВ 2015</td>\n" " <td >2,43 ₽</td>\n" " <td >3,02%</td>\n" " <td > 80,51 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >5 янв 2016</td>\n" " <td >8 янв 2016</td>\n" " <td >22 янв 2016</td>\n" " <td >3КВ 2015</td>\n" " <td >1,95 ₽</td>\n" " <td >3,21%</td>\n" " <td > 60,75 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >8 окт 2015</td>\n" " <td >12 окт 2015</td>\n" " <td >26 окт 2015</td>\n" " <td >2КВ 2015</td>\n" " <td >0,93 ₽</td>\n" " <td >1,28%</td>\n" " <td > 72,75 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >11 июн 2015</td>\n" " <td >16 июн 2015</td>\n" " <td >30 июн 2015</td>\n" " <td >2П 2014</td>\n" " <td >1,56 ₽</td>\n" " <td >2,14%</td>\n" " <td > 72,8 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >11 июн 2015</td>\n" " <td >16 июн 2015</td>\n" " <td >30 июн 2015</td>\n" " <td >1КВ 2015</td>\n" " <td >1,64 ₽</td>\n" " <td >2,25%</td>\n" " <td > 72,8 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >8 окт 2014</td>\n" " <td >11 окт 2014</td>\n" " <td >24 окт 2014</td>\n" " <td >1П 2014</td>\n" " <td >0,88 ₽</td>\n" " <td >1,61%</td>\n" " <td > 54,65 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >11 июн 2014</td>\n" " <td >17 июн 2014</td>\n" " <td >1 июл 2014</td>\n" " <td >2013</td>\n" " <td >0,67 ₽</td>\n" " <td >1,39%</td>\n" " <td > 48,33 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >24 апр 2013</td>\n" " <td >24 апр 2013</td>\n" " <td >8 мая 2013</td>\n" " <td >2012</td>\n" " <td >0,62 ₽</td>\n" " <td >1,15%</td>\n" " <td > 53,91 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >10 апр 2012</td>\n" " <td >10 апр 2012</td>\n" " <td >24 апр 2012</td>\n" " <td >2П 2011</td>\n" " <td >0,60 ₽</td>\n" " <td >0,99%</td>\n" " <td > 60,61 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >15 авг 2011</td>\n" " <td >15 авг 2011</td>\n" " <td >29 авг 2011</td>\n" " <td >1П 2011</td>\n" " <td >1,40 ₽</td>\n" " <td >1,67%</td>\n" " <td > 83,98 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >17 апр 2011</td>\n" " <td >17 апр 2011</td>\n" " <td >29 апр 2011</td>\n" " <td >2П 2010</td>\n" " <td >1,20 ₽</td>\n" " <td >1,07%</td>\n" " <td > 111,89 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >25 авг 2010</td>\n" " <td >25 авг 2010</td>\n" " <td >8 сен 2010</td>\n" " <td >1П 2010</td>\n" " <td >0,62 ₽</td>\n" " <td >0,71%</td>\n" " <td > 87,35 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >16 апр 2010</td>\n" " <td >16 апр 2010</td>\n" " <td >30 апр 2010</td>\n" " <td >2009</td>\n" " <td >0,22 ₽</td>\n" " <td >0,2%</td>\n" " <td > 110,79 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >1 авг 2008</td>\n" " <td >1 авг 2008</td>\n" " <td >15 авг 2008</td>\n" " <td >1П 2008</td>\n" " <td >2,00 ₽</td>\n" " <td >1,91%</td>\n" " <td > 104,53 ₽ </td>\n" " </tr>\n" " <tr >\n" " <td > </td>\n" " <td >18 апр 2008</td>\n" " <td >18 апр 2008</td>\n" " <td >2 мая 2008</td>\n" " <td >2П 2007</td>\n" " <td >1,5 ₽</td>\n" " <td >1,32%</td>\n" " <td > 114 ₽ </td>\n" " </tr>\n" " </tbody>\n" "</table>") subst = "$1" # You can manually specify the number of replacements by changing the 4th argument result = re.sub(regex, subst, test_str, 0, re.MULTILINE) if result: print (result) # 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