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*<div\sid=\"feature-bullets[\s\S]*?(<li>\s*[\s\S]*?[\s]+<\/ul>)", flags=re.MULTILINE) test_str = ("<div id=\"feature-bullets\" class=\"a-section a-spacing-medium a-spacing-top-small\">\n\n\n\n\n\n\n\n\n" " \n" " \n" " <ul class=\"a-unordered-list a-vertical a-spacing-none\">\n" " \n" " \n\n\n\n" "<div id=\"hsx-rpp-bullet-fits-message\" class=\"aok-hidden\">\n" " <div class=\"a-box a-alert-inline a-alert-inline-success hsx-rpp-fitment-bullets\"><div class=\"a-box-inner a-alert-container\"><i class=\"a-icon a-icon-alert\"></i><div class=\"a-alert-content\">\n" " This fits your&nbsp;<span class=\"hsx-rpp-bullet-model-info\"></span>.\n" " </div></div></div>\n" "</div>\n\n\n\n" "<li id=\"replacementPartsFitmentBullet\" data-doesntfitmessage=\"We're not sure this item fits your \" data-fitsmessage=\"This fits your \" class=\"aok-hidden\"><span class=\"a-list-item\">\n" " <span id=\"replacementPartsFitmentBulletInner\"> <a class=\"a-link-normal hsx-rpp-fitment-focus\" href=\"#\">Make sure this fits</a>\n" " <span>by entering your model number.</span>\n" " </span>\n" "</span></li>\n\n" "<script type=\"text/javascript\">\n" " P.when(\"ReplacementPartsBulletLoader\").execute(function(module){ module.initializeDPX(); })\n" "</script>\n\n" " \n" " \n" " <li><span class=\"a-list-item\"> \n" " Precision ground up-cut spiral design\n" " \n" " </span></li>\n" " \n" " <li><span class=\"a-list-item\"> \n" " M2 high speed steel runs cooler, lasts longer\n" " \n" " </span></li>\n" " \n" " <li><span class=\"a-list-item\"> \n" " Includes sizes 1/4\" x 3\", 1/2\" x 3-1/4\" and 3/8\" x 3\"\n" " \n" " </span></li>\n" " \n" " <li><span class=\"a-list-item\"> \n" " 1/4\" shank;\n" " \n" " </span></li>\n" " \n" " </ul>\n" " <!-- Loading EDP related metadata -->\n" " \n" " \n" " \n\n" " \n\n\n\n\n" "<span class=\"edp-feature-declaration\" data-edp-feature-name=\"featurebullets\" data-edp-asin=\"B006ZBADNW\" data-data-hash=\"2400652208\" data-defects=\"[{&quot;id&quot;:&quot;defect-mismatch-info&quot;,&quot;value&quot;:&quot;Different from product&quot;},{&quot;id&quot;:&quot;defect-missing-information&quot;,&quot;value&quot;:&quot;Missing information&quot;},{&quot;id&quot;:&quot;defect-unessential-info&quot;,&quot;value&quot;:&quot;Unimportant information&quot;},{&quot;id&quot;:&quot;defect-other-productinfo-issue&quot;,&quot;value&quot;:&quot;Other&quot;}]\" data-metadata=\"CATALOG\" data-feature-container-id=\"\" data-custom-event-handler=\"\" data-display-name=\"Bullet Points\" data-edit-data-state=\"featureBulletsEDPEditData\" data-position=\"\" data-resolver=\"CQResolver\"></span>\n" " \n" " \n" " \n" " \n" " \n" " \n\n" " \n\n" " \n" " \n" " <span class=\"caretnext\">›</span>\n" " <a id=\"seeMoreDetailsLink\" class=\"a-link-normal\" href=\"#productDetails\">See more product details</a>\n" " \n\n" " \n" "</div>") 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