Regular Expressions 101

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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

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Generated Code

import re regex = re.compile(r".*?Name: (?<name>.*?)\nversion: (?<num>.*?)\n.*?created on: (?<date>.*?)\n.*?", flags=re.DOTALL | re.IGNORECASE) test_str = ("Loading repository data...\n" "Reading installed packages...\n\n\n" "Information for patch sdksp3-rpm-201406:\n\n" "Name: sdksp3-rpm-201406\n" "Version: 9435\n" "Arch: noarch\n" "Vendor: maint-coord@suse.de\n" "Status: Needed\n" "Category: recommended\n" "Created On: Thu Jun 26 11:27:51 2014\n" "Reboot Required: No\n" "Package Manager Restart Required: Yes\n" "Interactive: No\n" "Summary: YOU update for popt\n" "Description:\n\n" "This update for RPM provides the following fixes and enhancements:\n\n" " * Add query support for the new weak dependency tags used in SLE 12.\n" " (bnc#884373)\n" " * Remove harmful --target option passing from the configure macro.\n" " (bnc#870358)\n" " * Disable broken ldconfig skipping code. (bnc#725478)\n\n" "Additionally, one issue was fixed in the rpm-python sub-package:\n\n" " * Return a PyLong for installsize and archivesize if a PyInt would be\n" " negative. This could make createrepo(8) generate repository metadata\n" " with negative sizes for some packages. (bnc#882489)\n\n\n" "Provides:\n" "patch:sdksp3-rpm-201406 == 9435\n\n" "Conflicts:\n" "popt-devel.x86_64 < 1.7-37.58.1\n" "rpm-32bit.x86_64 < 4.4.2.3-37.58.1\n" "rpm-devel.x86_64 < 4.4.2.3-37.58.1\n" "Loading repository data...\n" "Reading installed packages...\n\n\n" "Information for patch sdksp3-rpm-201501:\n\n" "Name: sdksp3-rpm-201501\n" "Version: 10143\n" "Arch: noarch\n" "Vendor: maint-coord@suse.de\n" "Status: Needed\n" "Category: recommended\n" "Created On: Fri Jan 9 08:15:33 2015\n" "Reboot Required: No\n" "Package Manager Restart Required: Yes\n" "Interactive: No\n" "Summary: Recommended update for rpm\n" "Description:\n\n" "This update for \"rpm\" fixes installation of packages when there are spaces\n" "in the path or file name and the option \"--noglob\" is used.\n\n\n" "Provides:\n" "patch:sdksp3-rpm-201501 == 10143\n\n" "Conflicts:\n" "popt-devel.x86_64 < 1.7-37.62.9\n" "rpm-32bit.x86_64 < 4.4.2.3-37.62.9\n" "rpm-devel.x86_64 < 4.4.2.3-37.62.9\n" "Loading repository data...\n" "Reading installed packages...\n\n\n" "Information for patch sdksp3-softwaremgmt-201503:\n\n" "Name: sdksp3-softwaremgmt-201503\n" "Version: 10576\n" "Arch: noarch\n" "Vendor: maint-coord@suse.de\n" "Status: Needed\n" "Category: recommended\n" "Created On: Tue Apr 7 09:29:23 2015\n" "Reboot Required: No\n" "Package Manager Restart Required: Yes\n" "Interactive: No\n" "Summary: YOU update for the Software Update Stack\n" "Description:\n\n" "This collective update for the Software Update Stack provides several fixes\n" "and enhancements.\n\n" "libsatsolver:\n\n" " * Support product end-of-life attribute. (FATE#300591)\n\n" "libzypp:\n\n" " * Improve conflict message for locked packages. (bsc#828631)\n" " * Add Product::endOfLife attribute. (FATE#316172, FATE#300591)\n\n" "PackageKit:\n\n" " * When a proxy server is configured, a default route is not mandatory.\n" " (bsc#910462)\n\n" "rpm:\n\n" " * Allow noscripts and notriggers on verify. (bsc#803669)\n\n" "yast2-pkg-bindings:\n\n" " * Use alias from URL query parameter if present. (bsc#892431)\n\n" "zypper:\n\n" " * A date limit must ignore newer patch candidates. (bsc#919709)\n" " * Show locked packages in zypper summary. (FATE#318256)\n" " * Refresh plugin services on 'lr' 'ls -r' and 'ref'. (bsc#893294,\n" " FATE#317863)\n" " * Enhance 'Digest verification failed' dialog. (FATE#315008)\n" " * Add Product::endOfLife attribute. (FATE#316172, FATE#300591)\n\n\n" "Provides:\n" "patch:sdksp3-softwaremgmt-201503 == 10576\n\n" "Conflicts:\n" "PackageKit-devel.x86_64 < 0.3.14-2.30.11\n" "libpackagekit-glib10-devel.x86_64 < 0.3.14-2.30.11\n" "libpackagekit-qt10.x86_64 < 0.3.14-2.30.11\n" "libpackagekit-qt10-devel.x86_64 < 0.3.14-2.30.11\n" "libsatsolver-devel.x86_64 < 0.17.9-0.5.2\n" "libzypp-devel.x86_64 < 9.38.4-0.7.10\n" "popt-devel.x86_64 < 1.7-37.63.64.1\n" "rpm-32bit.x86_64 < 4.4.2.3-37.63.64.1\n" "rpm-devel.x86_64 < 4.4.2.3-37.63.64.1\n" "ruby-satsolver.x86_64 < 0.44.5-0.5.194\n" "yast2-pkg-bindings-devel-doc.noarch < 2.17.59.2-0.8.13\n" "Loading repository data...\n" "Reading installed packages...\n") subst = "\\g<name> \\g<num> \\g<date>\\n" 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