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"^SUMME \/ W;\d{1,3};;\d{1,3};\d{1,3};\d{1,3};\K\d{1,3}", flags=re.MULTILINE) test_str = ("02.03.;38;;;3;1;42;\n" "03.03.;36;;;3;;39;\n" "04.03.;51;;14;9;1;75;\n" "05.03.;70;;9;9;;88;\n" "06.03.;26;;;2;;28;\n" "SUMME / W;221;;23;26;2;272;\n" "09.03.;35;;10;6;1;52;\n" "10.03.;50;;3;4;;57;\n" "11.03.;48;;4;8;;60;\n" "12.03.;35;;;4;1;40;\n" "13.03.;15;;;3;;18;\n" "SUMME / W;183;;17;25;2;227;\n" "16.03.;23;;7;2;1;33;\n" "17.03.;36;;1;3;;40;\n" "18.03.;36;;;8;;44;\n" "19.03.;34;;;2;;36;\n" "20.+21.03.;22;;4;3;;29;\n" "SUMME / W;151;;12;18;1;182;\n" "23.03.;38;;4;4;1;47;\n" "24.03.;26;;4;5;;35;\n" "25.03.;24;;7;5;;36;\n" "26.03.;22;;;3;;25;\n" "27.+28.03.;4;;;2;;6;\n" "SUMME / W;114;;15;19;1;149;") 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