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

Substitution
Processing...

Code Generator

Language

Generated Code

import re regex = re.compile(r"(skip-if-active=\")([^\"]+)(\")", flags=re.MULTILINE) test_str = ("<script skip-if-active=\"facebook-for-woocommerce/facebook-for-woocomerce.php\">\n" " !(function (f, b, e, v, n, t, s) {\n" " if (f.fbq) return;\n" " n = f.fbq = function () {\n" " n.callMethod ? n.callMethod.apply(n, arguments) : n.queue.push(arguments);\n" " };\n" " if (!f._fbq) f._fbq = n;\n" " n.push = n;\n" " n.loaded = !0;\n" " n.version = \"2.0\";\n" " n.queue = [];\n" " t = b.createElement(e);\n" " t.async = !0;\n" " t.src = v;\n" " s = b.getElementsByTagName(e)[0];\n" " s.parentNode.insertBefore(t, s);\n" " })(window, document, \"script\", \"https://connect.facebook.net/de_DE/fbevents.js\");\n" " fbq(\"init\", \"{{fbPixelId}}\");\n" " fbq(\"track\", \"PageView\");\n" "</script>\n" "<noscript><img height=\"1\" width=\"1\" alt=\"\" style=\"display: none;\" src=\"https://www.facebook.com/tr?id={{fbPixelId}}&ev=PageView&noscript=1\" /></noscript>") 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