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

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"(\bVR\b)|(\bMA-DO\b)|(\bTUSSEN\b)|(\bTSS\b)|(\bOM\b)|(\bVOOR\b)|(\bTOT\b)|(\b\d{1,2}[HU.:*]\d{1,2}[U]\b)|(\b\d{1,2}[HU.:*]\d{1,2}\b)|(\b\d{1,2}[HU]\b)|(\bd{1,2}[HU]\b)" test_str = ("LEVEREN ZONDER FOUT 25/08/2016 OM 8U REF. 090008865\n" "LEVEREN ZONDER FOUT 24/08/2016 TSS 9U00 EN 11U00 REF:15453\n" "LEVEREN TUSSEN 9.00-16.30 UUR\n" "LEV TSS 9H-16H30/GEEN HEFTRUCK\n" "LEV MA-DO 8H-16H30/VR 8H-12H30\n" "LEVEREN ZONDER FOUT 12/09/2016 TUSSEN 09*00 EN 16*00 UUR\n" "LEVEREN ZONDER FOUT 13/09/2016 OM 10*00U MET REF NR: 090009197\n" "LEVEREN VOOR 15H00\n" "LEV.MA-DO TOT 16H / VR TOT 14H TEST\n\n\n") matches = re.finditer(regex, test_str) 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