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"<div\sid=\"[\s\S]*?dp_productDescription_container_div[\s\S]*?<div\sid=\"productDescription_feature_div[\s\S]*?<div[\s\S]*?<div[\s\S]*?<div\sid=\"productDescription[\s\S]*?>([\s\S]*?<p>[\s\S]*?<\/p>\s*)<\/div>", flags=re.MULTILINE) test_str = ("<div id=\"dp_productDescription_container_div\" class=\"feature\" data-feature-name=\"productDescription\" data-cel-widget=\"dp_productDescription_container_div\">\n" " \n" " \n\n\n\n\n" " \n\n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " \n\n\n\n" " \n" " <div id=\"productDescription_feature_div\" data-feature-name=\"productDescription\" data-template-name=\"productDescription\" class=\"a-row feature\" data-cel-widget=\"productDescription_feature_div\">\n" " \n" " \n" " \n" " <div class=\"a-divider a-divider-section\"><div class=\"a-divider-inner\"></div></div>\n" " \n" " \n" " <h2 class=\"softlines\">\n" " Product description\n" " \n" " </h2>\n" " \n" " \n" " \n\n" " \n" " \n" " \n" " \n" " \n\n\n\n\n\n" " <div id=\"productDescription\" class=\"a-section a-spacing-small\">\n" " \n\n\n\n\n\n" " \n" " \n" " \n\n\n" " \n" " \n" " \n" " \n" " \n\n" " \n" " \n" " \n" " \n" " \n" " <!-- show up to 2 reviews by default --> \n" " \n" " \n" " \n" " \n" " <p>Train better. Look great. The Vazee agility trainer supports your interval workouts with an exciting blend of fashionable colors and a newly designed performance lace mesh upper for support and breathability.\n" " \n" " </p>\n" " \n" " \n" " <p>Train better. Look great. The Vazee agility trainer supports your interval workouts with an exciting blend of fashionable colors and a newly designed performance lace mesh upper for support and breathability.\n" " \n" " </p> \n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " </div>\n\n" " \n" " <style type=\"text/css\">\n" "#productDescription {\n" " color: #333333;\n" " word-wrap: break-word;\n" " font-size: small;\n" " line-height: initial;\n" " margin: 0.5em 0px 0em 25px;\n" "}\n\n" "#productDescription_feature_div > h2.default {\n" " color: #CC6600;\n" " font-size: medium;\n" " margin: 0 0 0.25em;\n" "}\n\n" "#productDescription_feature_div > h2.books {\n" " color:#333 !important;\n" " font-size:21px !important;\n" " line-height: 1.3;\n" " padding-bottom: 4px;\n" " font-weight: normal;\n" " margin: 0px;\n" "}\n\n" "#productDescription_feature_div > h2.softlines {\n" " color:#333 !important; \n" " font-size:21px !important;\n" " line-height: 1.3;\n" " padding-bottom: 4px;\n" " font-weight: bold;\n" " margin: 0px;\n" "}\n" "#productDescription > p, #productDescription > div, #productDescription > table {\n" " margin: 0 0 1em 0;\n" "}\n\n" "#productDescription p {\n" " margin: 0em 0 1em 1em;\n" "}\n\n" "#productDescription h3 {\n" " font-weight: normal;\n" " color: #333333;\n" " font-size: 1.23em;\n" " clear: left;\n" " margin: 0.75em 0px 0.375em -15px;\n" "}\n\n" "#productDescription table {\n" " border-collapse: inherit !important;\n" " margin-bottom: 0;\n" "}\n\n" "#productDescription table img {\n" " max-width: inherit !important;\n" "}\n\n" "#productDescription table td {\n" " font-size: small;\n" " vertical-align: inherit !important;\n" "}\n\n" "#productDescription ul li {\n" " margin: 0 0 0 20px;\n" "}\n\n" "#productDescription ul li ul {\n" " list-style-type: disc !important;\n" " margin-left: 20px !important;\n" "}\n\n" "#productDescription ul ul li {\n" " list-style-type: disc !important;\n" " margin-left: 20px !important;\n" "}\n\n" "#productDescription > ul ul li {\n" " list-style-type: disc !important;\n" "} \n\n\n" "#productDescription ul li ul li {\n" " margin: 0 0 0 20px;\n" "}\n\n" "#productDescription .aplus p {\n" " margin: 0 0 1em 0;\n" "}\n\n" "#productDescription small {\n" " font-size: smaller;\n" "}\n\n" "#productDescription.prodDescWidth {\n" " max-width: 1000px\n" "}\n\n" "</style>\n\n" "<!-- Used to set table width because AUI is overriding the width attribute of the tables coming in description -->\n" "<script type=\"text/javascript\">\n" "P.when('jQuery').execute(function($){\n" " $(\"#productDescription table\").each(function() {\n" " var width = $(this).attr('width');\n" " if (width) width += 'px';\n" " else width = 'auto';\n" " $(this).css('width', width);\n\n" " var padding = $(this).attr('cellpadding');\n" " if (padding) padding += 'px';\n" " else padding = '0px';\n" " $(this).css('padding', padding);\n" " });\n" "});\n" "</script>\n\n" " \n\n\n\n" " \n" " \n" " \n" " \n" " </div>\n\n\n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " \n" " \n\n" " \n\n\n\n\n\n\n\n\n\n\n\n\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