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"((\d+) (C\.F\.R|U\.S\.C). (§) ((\d+\.?\d+)(\(\w+\))?(\(\d+\))?(\(\w+\))?( \w+ )(\(\w+\))?(;)))|(\d+) (U\.S\.C)\. (§) (\d+)(\W+)(\w+)(\W+)(\d+)(\W+)(\w+)(\W+)|((\d+) (C\.F\.R|U\.S\.C). (§) (\d+.\.?\d+))") test_str = "\" 5 C.F.R. § 2424.32(a) and (c); <i>AFGE, Local 1858</i>, 56 FLRA 1115, 1117 (2001). The Authority has held that a union's lack of response constituted a concession to an<final tooltip='CUE phrase-fact'> <final tooltip='CUE phrase-fact'> <final tooltip='CUE phrase-fact'> <final tooltip='CUE phrase-fact'>agency's argument</final> the proposal interferes with its management right to layoff employees under 5 U.S.C. § 7106(a)(2)(A). SOP at 11. The Agency<intial tooltip='CUE phrase-intial'> <intial tooltip='CUE phrase-intial'> <intial tooltip='CUE phrase-intial'> <intial tooltip='CUE phrase-intial'> affects management's right to layoff employees under § 7106(a)(2)(A) of the Statute, it is outside the<rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale 5 C.F.R. § 2424.32 tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'>duty to bargain</rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> . <i>Int'l Ass'n of Machinists &amp; Aerospace Workers</i>, 59 FLRA 830, 831 (2004); <i>Tidewater Va. Fed. Employees Metal Trades Council</i>, 58 FLRA 561, 563 (2003) (citing <i>NFFE, Local 1904</i>, 57 FLRA 28, 29 (2001)). In accordance with Authority precedent set forth above, Proposal 2 is outside the<rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'>duty to bargain</rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> . n2 <footnote fn-num=\"2\">Given the above,<rationale tooltip='CUE phrase-fact'>it is unnecessary to address the</rationale>Agency's argument that Proposal 2 concerns supervisors and therefore is only negotiable at the election of the Agency.</footnote><b>IX. Order</b> Proposal 1 is negotiable only at the election of the Agency and Proposal 2 is not<fact tooltip='CUE phrase-fact'> <fact tooltip='CUE phrase-fact'> <fact tooltip='CUE phrase-fact'> <fact tooltip='CUE phrase-fact'> <fact tooltip='CUE phrase-fact'> <fact tooltip='CUE phrase-fact'> <fact tooltip='CUE phrase-fact'> <fact tooltip='CUE phrase-fact'> <fact tooltip='CUE phrase-fact'> <fact tooltip='CUE phrase-fact'>within the<rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'> <rationale tooltip='CUE phrase-fact'>duty to bargain</rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </rationale> </fact> </fact> </fact> </fact> </fact> </fact> </fact> </fact> </fact> </fact> , therefore, the petition with respect to Proposal 2<final tooltip='CUE phrase-fact'>is dismissed</final> . </content><br>" match = regex.search(test_str) if match: print(f"Match 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