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

r"
"
gum

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"(?:^|\s)(((?:\+|0{2})(?:49|43|33)[-\. ]?|0)([1-9]\d{1,2}[-\. ]?|\([1-9]\d{1,2}\)[-\. ]?)(\d{6,9}|\d{2,3}[-\. ]\d{4,6}))" test_str = ("+33 100 000 0000\n" "000-000-0000\n" "000 000 0000\n" "000.000.0000\n\n" "12000-000-000012\n" "12000 000 000012\n" "12000.000.000012\n\n" "0049-000-0000\n" "000 000 0000\n" "000.000.0000\n\n\n" "(000)000-0000\n" "(000)000 0000\n" "(000)000.0000\n" "(000) 000-0000\n" "(000) 000 0000\n" "(000) 000.0000\n\n" "12(000)000-000012\n" "12(000)000 000012\n" "12(000)000.000012\n" "12(000) 000-000012\n" "12(000) 000 000012\n" "12(000) 000.000012\n\n" "000-0000\n" "000 0000\n" "000.0000\n" "0000000\n" "(100)0000000\n\n" "12000-000012\n" "12000 000012\n" "12000.000012\n" "12000000012\n" "12(000)000000012\n\n" "+28 100 000 0000\n" "+33 000 000 0000\n" "+33 100 000 0000\n" "+49 100 000 0000\n" "+43 100 000 0000\n" "+43.100.000.0000\n" "+43-100-000-0000\n" "+43 100 000 0000\n" "+43.100.000.0000\n" "+43-100-000-0000\n" "+433 100 000 0000\n" "+433.100.000.0000\n" "+433-100-000-0000\n" "+433000000000\n" "0043 1000000000\n" "0043 100000000000023\n" "0043 100000\n" "0043 100000000\n" "0043 100 00 00000\n" "0043 100 000 0000\n" "0043-100-000-0000\n" "00431000000000\n" "0000-000-000-0000\n" "00000000000000\n" "+43 (100)000 0000\n" "0043 (100)000-0000\n" "0043(100)000-0000\n" "0000 (100)000-0000\n" "0000(100)000-0000\n" "+43 (100) 000 0000\n" "0043 (100) 000-0000\n" "0043(100) 000-0000\n" "0000 (100) 000-0000\n" "0000(100) 000-0000\n" "+43 (10)000 0000\n" "0043 (10)000-0000\n" "0043(10)000-0000\n" "0000 (10)000-0000\n" "0000(10)000-0000\n" "+43 (10) 000 0000\n" "0043 (10) 000-0000\n" "0043(10) 000-0000\n" "0000 (10) 000-0000\n" "0000(10) 000-0000\n\n" "0662 874278\n" "0676 7359567\n\n" "0343545435343\n\n" "06700000023\n\n" "12+43 100 000 000012\n" "12+43.100.000.000012\n" "12+43-100-000-000012\n" "12+43100000000012\n" "120043 100000000012\n" "120043-100-000-000012\n" "120043100000000012\n" "12+43 (100)000 000012\n" "120043 (100)000-000012\n" "120043(100)000-000012\n\n" "+49 10 000000\n" "(000) 0000-0000\n" "(0000) 0000-0000\n" "(00000) 000-0000\n" "(030000) 00-0000\n" "01200-0000000\n" "0137-000 0000000\n" "01500-0000000\n" "0160-0000000\n" "0170-0000000\n" "032-000000000\n" "0700-0000000\n" "0800-0000000\n" "0900-0-000000\n\n\n\n" "0000000000000\n" "0000000000000\n\n" "120000000000000\n" "120000000000000\n\n" "+00+00 000 0000\n\n" "2013 175000km\n" "019 55000km") matches = re.finditer(regex, test_str, re.UNICODE | 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