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

/
/
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"\b[A-Z][a-z]+\b\s+\b[A-Z][a-z]+\b" test_str = ("54. Mikhail Stepanovich ZUSKO\n" "(Михаил Степанович ЗУСЬКО)\n" "Function: Russian military leader – Lieutenant- General\n" "Chief of staff of the “West” grouping\n" "Former Commander of the 58th Combined Arms Army of the Southern Military District\n" "DOB: 24.5.1972\n" "POB: Vetly, Volyn region, former Ukrainian SSR (now Ukraine)\n" "Nationality: Russian\n" "Gender: male\n" "Associated entities: Ministry of Defence of the Russian Federation\n\n" "55. Mikhail Yuryevich TEPLINSKIY\n" "(Михаил Юрьевич ТЕПЛИНСКИЙ) \n" "Function: Russian military leader – Colonel-General\n" "Commander of Airborne Forces of the Armed Forces of the Russian Federation\n" "DOB: 9.1.1969\n" "POB: Mospino, Donetsk oblast, former Ukrainian SSR (now Ukraine)\n" "Nationality: Russian\n" "Gender: male\n" "Associated entities: Ministry of Defence of the Russian Federation\n\n" "56. Nikolay Mikhailovich PARSHIN\n" "(Николай Михайлович ПАРШИН) \n" "Function: Russian military leader – Lieutenant- General\n" "Head of the Main Rocket and Artillery Directorate of the Ministry of Defense of the Russian Federation\n" "DOB: 20.12.1962\n" "POB: The village of Mordovskoye- Kolomasovo, former Mordovian ASSR (now Russian Federation)\n" "Nationality: Russian\n" "Gender: male\n" "Associated entities: Ministry of Defence of the Russian Federation\n\n" "57. Oleg Yurievich TSOKOV\n" "(Олег Юрьевич ЦОКОВ) \n" "Function: Russian military leader – Major-General\n" "Commander of the 144th Motor Rifle Division of the 20th Combined Arms Army of the Armed Forces of the Russian Federation\n" "DOB: 23.9.1971\n" "POB: former USSR (now Russian Federation)\n" "Nationality: Russian\n" "Gender: male\n" "Associated entities: Ministry of Defence of the Russian Federation\n\n" "58. Ramil Rakhmatulovich IBATULLIN\n" "(Рамиль Рахматуллович ИБАТУЛЛИН)\n" "Function: Russian military leader – Major-General\n" "Commander of the 90th Guards Tank Division\n" "DOB: 22.10.1976\n" "POB: Bagishevo, Apastovsky District, Tatarstan, former USSR (now Russian Federation)\n" "Nationality: Russian\n" "Gender: male\n" "Associated entities: Ministry of Defence of the Russian Federation\n\n" "59. Sergey Viktorovich KARAKAEV\n" "(Сергей Викторович КАРАКАЕВ) \n" "Function: Russian military leader – Colonel-General\n" "Commander of the Strategic Missile Forces\n" "DOB: 4.6.1961\n" "POB: The village of Ivano-Slyusarevka, Krasnodar Territory, former USSR (now Russian Federation)\n" "Nationality: Russian\n" "Gender: male\n" "Associated entities: Ministry of Defence of the Russian Federation\n") 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