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
No Match

r"
"
gm

Test String

Code Generator

Language

Generated Code

# coding=utf8 # the above tag defines encoding for this document and is for Python 2.x compatibility import re regex = r"(?P<Module>^\w+)+\s+(?P<Name>.{1,}(?=Ke|Fi))+(?P<Type>(Kernel|File System))" test_str = ("1394ohci 1394 OHCI-совместимый Kernel\n" "3ware 3ware Kernel 19.05.2015 3:28:03\n" "ACPI Драйвер Microsoft ACPI Kernel\n" "AcpiDev Драйвер устройств с AC Kernel\n" "acpiex Microsoft ACPIEx Drive Kernel\n" "acpipagr Драйвер агрегатора про Kernel\n" "AcpiPmi Драйвер устройства изм Kernel\n" "acpitime Драйвер ACPI Wake Alar Kernel\n" "Acx01000 Acx01000 Kernel\n" "ADP80XX ADP80XX Kernel 10.04.2015 1:49:48\n" "AFD Драйвер дополнительных Kernel\n" "afunix afunix Kernel\n" "ahcache Application Compatibil Kernel\n" "amdgpio2 Драйвер GPIO-клиента A Kernel 07.02.2019 14:32:20\n" "amdi2c Служба контроллера I2C Kernel 20.03.2019 9:57:33\n" "AmdK8 AMD K8 драйвер процесс Kernel\n" "AmdPPM Драйвер процессора AMD Kernel\n" "amdsata amdsata Kernel 14.05.2015 17:14:52\n" "amdsbs amdsbs Kernel 12.12.2012 2:21:44\n" "amdxata amdxata Kernel 01.05.2015 5:55:35\n" "AppID Драйвер AppID Kernel\n" "applockerflt Драйвер фильтра Smartl Kernel\n" "bindflt Windows Bind Filter Dr File System\n" "bowser Браузер File System\n" "BtFilter BtFilter Kernel 25.01.2019 10:46:26") matches = re.finditer(regex, test_str, re.MULTILINE) for matchNum, match in enumerate(matches, start=1): print ("Match {matchNum} was found at {start}-{end}: {match}".format(matchNum = matchNum, start = match.start(), end = match.end(), match = match.group())) for groupNum in range(0, len(match.groups())): groupNum = groupNum + 1 print ("Group {groupNum} found at {start}-{end}: {group}".format(groupNum = groupNum, start = match.start(groupNum), end = match.end(groupNum), group = match.group(groupNum))) # Note: for Python 2.7 compatibility, use ur"" to prefix the regex and u"" to prefix the test string and substitution.

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