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
No Match

/
/
g

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"(((\+49\ ))|(0))\d{3,4}\ (\d{7}|\d{6}(\-\d{2})?)" test_str = ("// valid\n" "//Landline\n" "0221 999985\n" "0221 999985-80\n" "// Mobile\n" "01578 1234567\n" "// International\n" "+49 221 999985\n" "+49 221 999985-60\n" "+49 1578 1234567\n\n" "// invalid\n" "(06442) 3933023\n" "(02852) 5996-0\n" "(042) 1818 87 9919\n" "06442 / 3893023\n" "06442 / 38 93 02 3\n" "06442/3839023\n" "042/ 88 17 890 0\n" "+49 221 549144 – 79\n" "+49 221 - 542194 79\n" "+49 (221) - 542944 79\n" "0 52 22 - 9 50 93 10\n" "+49(0)121-79536 - 77\n" "+49(0)2221-39938-113\n" "+49 (0) 1739 906-44\n" "+49 (173) 1799 806-44\n" "0173173990644\n" "+4922154219479\n" "0214154914479\n" "02141 54 91 44 79\n" "01517953677\n" "+491517953677\n" "015777953677\n" "02162 - 54 91 44 79\n" "(02162) 54 91 44 79\n" "saddsadasdasd\n" "asdasd\n" "asdasd asdasd asd\n" "asdasd\n" "kjn asohas asdoiasd\n" "23434 234 234 23\n" "323\n" "23434 234----234\n" "///// ----\n" "// id8834 3493934 //\n") subst = "" # You can manually specify the number of replacements by changing the 4th argument result = re.sub(regex, subst, test_str, 0) 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