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
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Test String

Substitution
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Code Generator

Language

Generated Code

import re regex = re.compile(r"(<(?!(li|ul))[^>]+) style=\".*?\"", flags=re.MULTILINE) test_str = ("<p class=\"BodyTextIndent3\">\n" " <strong>[To do]</strong> Style we need to have work in Tech zone: “Body Text Indent 2” so that we can indent paragraphs under a sub-step or sub-bullet, such as a paragraph containing a graphic.\n" " </p>\n" " <ul style=\"margin:0pt; padding-left:0pt\">\n" " <li class=\"ListParagraph\" style=\"margin-left:27.14pt; text-indent:0pt; padding-left:8.86pt; font-family:serif\">\n" " <span style=\"font-family:'Metropolis Light'\">This is a first-level bullet item (that works right now) created by using the </span><strong><span style=\"font-family:'Metropolis Light'; \">List Paragraph and then clicking the Bullet button in the toolbar</span></strong><span style=\"font-family:'Metropolis Light'\">. Then, if you want to create sub-bullets, just also press the Tab key, like this:</span>\n" " <ul style=\"margin-right:0pt; margin-left:0pt; padding-left:0pt\">\n" " <li class=\"ListParagraph\" style=\"margin-left:28.4pt; text-indent:0pt; padding-left:7.6pt\">\n" " <span style=\"font-family:'Metropolis Light'\">This is a sub-bullet by using the </span><strong><span style=\"font-family:'Metropolis Light'; \">List Paragraph style, using a bulleted list and then pressing Tab</span></strong><span style=\"font-family:'Metropolis Light'\">. If you press Return now, you will get another sub-bullet.</span>\n" " <ul style=\"margin-right:0pt; margin-left:0pt; padding-left:0pt\">\n" " <li class=\"ListParagraph\" style=\"margin-left:27.12pt; text-indent:0pt; padding-left:8.88pt\">\n" " <span style=\"font-family:'Metropolis Light'\">This is a sub-bullet by using the </span><strong><span style=\"font-family:'Metropolis Light'; \">List Paragraph style, using a bulleted list and then pressing Tab twice</span></strong><span style=\"font-family:'Metropolis Light'\">. If you press Return now, you will get another sub-sub-bullet.</span>\n" " </li>\n" " </ul>\n" " </li>\n" " </ul>\n" " </li>\n" " </ul>\n" " <p class=\"BodyText\">\n" " Following are some examples taken from the RA appendixes. We need enough styles so that we can get these to work on Tech zone:\n" " </p>\n" " <p class=\"BodyText\">\n" " To configure the cluster quorum settings:\n" " </p>\n" " <ol style=\"margin:0pt; padding-left:0pt\">\n" " <li class=\"ListParagraph\" style=\"margin-left:33.8pt; text-indent:0pt; padding-left:2.2pt\">\n" " Configure quorum votes for Site 1:\n" " <ol style=\"margin-right:0pt; margin-left:0pt; padding-left:0pt; list-style-type:lower-latin\">\n" " <li class=\"ListParagraph\" style=\"margin-left:33.8pt; text-indent:0pt; padding-left:2.2pt\">\n" " Open Failover Cluster Manager and select<span style=\"font-family:Cambria\">&#xa0;</span><strong>More Actions</strong><span style=\"font-family:Cambria\">&#xa0;</span>&gt;<span style=\"font-family:Cambria\">&#xa0;</span><strong>Configure Cluster Quorum Settings</strong>.\n" " </li>\n" " <li class=\"ListParagraph\" style=\"margin-left:33.8pt; text-indent:0pt; padding-left:2.2pt\">\n" " Complete the Configure Cluster Quorum Wizard, using the following guidelines:\n" " </li>\n" " </ol>\n" " </li>\n" " </ol>") subst = "" result = regex.sub(subst, test_str) if result: print(result)

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