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"^(?:\+4[39]|004[39]|0|\+\(49\)|\(\+49\))\s?(?=(?:[^\d\n]*\d){10,12}(?!\d))(\()?[19][1567]\d{1,2}(?(1)\))\s?\d(?:[ /-]?\d)+", flags=re.MULTILINE) test_str = ("################################### This is allowed ##########################\n" "+49 15207930698\n" "+49 15207955279\n" "+49 1739341284\n" "+49 1626589266\n\n" "+49915175461907\n" "+4915207930698\n" "+491635556416\n" "017687400179\n" "015903900297\n" "015175355164\n" "015175354885\n" "01771789427\n\n" "+49 915175461907\n" "+43 915175461907\n" "+49159039012341\n" "+43159039012341\n" "+4915207829969\n" "+4917697400179\n" "+4915903904567\n" "+4915902944599\n" "+4915902944599\n" "+4915903904567\n" "+491739341284\n" "+431739341284\n\n" "+49 176 97 456 123\n" "0176 79 123 17 9\n" "0176 97 50 01 79\n" "0176 79 123 179\n" "0174 80123179\n\n" "0049 915175461907\n" "0043 915175461907\n" "0049159039012341\n" "0043159039012341\n" "004915207829969\n\n" "(+49) 17697123456\n" "+(49) (1739) 34 12 84\n" "+49 (1739) 34-12-84\n\n" "############################################################################################\n" "################################### This is NOT allowed ####################################\n" "012345678901234\n" "123w345345345345\n" "0123456789101191919\n\n" "### Too short\n" "+49 15902\n" "+49 1590123\n" "+49 15903567\n" "+49 177178796\n" "+49 757130309\n\n" "+4915902\n" "+491590123\n" "+4915903567\n" "+49177178796\n" "+49757130309\n\n" "### Too long\n" "+49 1590345985412\n" "+491590345985412\n\n" "### Not German and not Austrain format\n" "+12127319863\n" "+13322014056\n" "+12126712234\n" "+427532697710\n" "+417868150810\n" "+287533002875\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