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"RC[0-9]{6}.[0-9]{4}.[A-Za-z]{1}[0-9]{5}|MP[0-9]{6}.[0-9]{4}.[A-Za-z]{1}[0-9]{5}|CO[0-9]{6}.[0-9]{4}.[A-Za-z]{1}[0-9]{5}" test_str = ("Rechargement reussi. Montant de la transaction : 80 FCFA, ID transaction : RC220514.2328.A31840, Frais : 0 FCFA, Commission : 0 FCFA, Nouveau Solde : 0.28FCFA Other msisdn 658747305.\n\n" "Paiement de FORFAIT INTERNET en succes par 658747305. \n" "ID transaction: MP220512.2119.C83780, Montant: 250 FCFA. \n" "Nouveau solde: 80.28 FCFA.\n\n" "Retrait d'argent reussi par le 693734202 avec le Code : 226752. Informations detaillees : Montant: 2000 FCFA, Frais: 50 FCFA, No de transaction CO220428.2045.B63327, montant net debite 2050 FCFA, Nouveau solde: 387.1 FCFA.\n\n" "CashOut success by 698039077 with the Code : 375533. Detailed information : Amount: 1500 FCFA, Fees: 45 FCFA, Transaction ID: CO211211.1932.C52092, Net amount debited 1545FCFA, New balance: 315.1 FCFA.") 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