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"(\S+)=[\"']?((?:.(?![\"']?\s+(?:\S+)=|[>\"']))+.)[\"']?") test_str = "<p class=\"s15\" style=\"padding-left: 15pt;text-indent: 0pt;text-align: left;\">Impulsora Minera Mexicana, S.A. de C.V. Industrial Minera México, S.A. de C.V. Industrial Minera México, S.A. de C.V. Joaquín Chávez González</p><p class=\"s15\" style=\"padding-left: 15pt;text-indent: 0pt;line-height: 8pt;text-align: left;\">José Luis Ponce Muñoz</p><p class=\"s15\" style=\"padding-left: 15pt;text-indent: 0pt;text-align: left;\">Kimber Resources de México, S.A. de C.V. Mario Alejandro Schaefer Armendariz Mexoro Minerals Ltd.</p><p class=\"s15\" style=\"padding-left: 15pt;text-indent: 0pt;line-height: 8pt;text-align: justify;\">Minas de Almaceña, S.A.</p><p class=\"s15\" style=\"padding-left: 15pt;text-indent: 0pt;text-align: justify;\">Minas de Coronado, S. de R.L. de C.V. Minas de La Alta Pimería, S.A. de C.V. Minera Agua Tierra, S.A. de C.V.</p><p class=\"s15\" style=\"padding-top: 2pt;padding-left: 15pt;text-indent: 0pt;text-align: left;\">Minera Aventureros del Yaqui, S.A. de C.V. Minera Azteca de Oro y Plata, S.A. de C.V. Minera Bismark, S.A. de C.V.</p><p class=\"s15\" style=\"padding-left: 15pt;text-indent: 0pt;text-align: left;\">Minera Cascabel, S.A. de C.V. Minera Delta, S.A. de C.V.</p><p class=\"s15\" style=\"padding-left: 15pt;text-indent: 0pt;text-align: left;\">Minera Hochschild de México, S.A. de C.V. Minera Monterde, S. de R.L. de C.V. Minera Moris, S.A. de C.V.</p><p class=\"s15\" style=\"padding-left: 15pt;text-indent: 0pt;text-align: left;\">Minera Pericones, S.A. de C.V. Minera Plata del Sur, S.A. de C.V. Minera Río Tinto, S.A. de C.V. Minera Sol de Oro, S.A. de C.V. Minera Terrazas, S.A. de C.V. Minera Teutonia, S.A. de C.V. Minera Uruachi, S.A. de C.V. Minerales El Madroño, S.A. de C.V. Minerales Vextar</p><p class=\"s15\" style=\"padding-left: 15pt;text-indent: 0pt;text-align: left;\">Ocampo Mining, S.A. de C.V. Pan American Goldfields Ltd. Panamerican Silver Corp.</p><p class=\"s15\" style=\"padding-left: 15pt;text-indent: 0pt;text-align: left;\">Rodolfo Chávez Rocha Salvador Chávez Ramírez Sierra Metals Inc.</p><p class=\"s15\" style=\"padding-left: 15pt;text-indent: 0pt;text-align: left;\">Sunburst Mining de México, S.A. de C.V. Ternium México, S.A. de C.V.</p><p class=\"s15\" style=\"padding-left: 15pt;text-indent: 0pt;line-height: 8pt;text-align: left;\">Tubería Laguna, S.A. de C.V.</p><p class=\"s15\" style=\"padding-left: 15pt;text-indent: 0pt;text-align: left;\">Tumbstone Exploration de México, S.A. de C.V.</p><p class=\"s15\" style=\"padding-left: 15pt;text-indent: 0pt;text-align: left;\">VVC Exploration de México, S. de R.L. de C.V.</p><p class=\"s14\" style=\"padding-left: 30pt;text-indent: 0pt;line-height: 10pt;text-align: center;\">Ciudad de México</p><p class=\"s15\" style=\"padding-left: 30pt;text-indent: 0pt;line-height: 9pt;text-align: center;\">Aceros Inoxidables y Servicios Industriales,</p><p class=\"s15\" style=\"padding-left: 15pt;text-indent: 0pt;line-height: 9pt;text-align: left;\">S.A. de C.V.</p><p class=\"s15\" style=\"padding-left: 30pt;text-indent: 0pt;line-height: 9pt;text-align: center;\">Aceros Inoxidables y Servicios Industriales,</p><p class=\"s15\" style=\"padding-left: 15pt;text-indent: 0pt;line-height: 9pt;text-align: left;\">S.A. de C.V.</p>" 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