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

/
/
g

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"(?i)(?m)(?<![a-z]|\.|\.\d)(?:\d{1,4})(?:[.,\s]\d{3})*(?:[.,]\d{2})(?!\%|\d|\.|\s\.|\scm|cm|pol|\spol)" test_str = ("TICKET RESTAURANT DE PORTUGAL,\n" "Infante Santo,\n" "1350—177 Lisboa\n\n" "S.A.\n\n" "AV. 23 A/D\n\n" "NIF e MAT.:\n" "Cap.\n\n" "500423849\n\n" "Soc. 500.000 Euros\n\n" "Z43\n\n" "CDUCket\n\n" ";fensmoº\n\n" "000370.19\n\n" "FAS—SISTEMAS DE INFORMACAO LDA\n\n" "TAGUS PARK\n\n" "EDIFICIO QUALIDADE B2-1B\n\n" "2740—120 PORTO SALVO\n\n" " \n\n" " \n\n" " \n\n" " \n\n" " \n\n" " \n\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "r\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "W\n" "[\n\n" " \n\n" " \n\n" " \n\n" " \n\n" " \n\n" " \n\n" "fwj+—Processado por programa certificado n.\n\n" ". ticket\n\n" "SEFVIÇOS Delegação Nºrte\n\n" "R. das Cardosas, 1495\n" "4425 - 510 S.Pedro Fins Maia\n\n" "Delegação Sul\n\n" "Av. Infante Santo, 21 A\n\n" "1350-177 Lisboa\n\n" "Tel. 210 420 325 - Fax. 210 420 365\n\n" "Hcket©tkketpt\n" "Hcketpt\n\n" "Pagamento por transferencia bancaria:\n" "IBAN: PT50 0079 0000 64938339101 80\n\n" "Delegação Centro\n\n" "R. Álvaro Pires de Miranda,\n" "Lt. 46 ,1.º Dto. A ' 2415-369 Leiria\n" "Tel. 228 302 900 ' Fax. 228 302 904 Tel. 244 826 378 ' Fax. 244 823 689\n\n" "2292/AT\n\n" "W V/REQUISIÇÃO V/Nº CONTRIBUINTE Nº CLIE_NTE W DATA W\n" "WI \"\"\" 777 “ª\" ' W ORIGINAL DA ;\n" "W WPT 502524588 EET 000370W 2017— 05- 03 FACTURA FET 17/1208\n" "TICKET ENSINO fornecidos: , , W\n" "% QUANHDADE ; VALORUNnAmo W VALORTOTAL\n" "Emissão Ticket Ult. Ticket Cod. Produto « W\n" "17002775 00015396 00015397 105.00/ET W 2W 105.00W 210.00\n" "17002776 00015398 00015400 140.00/ET W 3; 140.00W 420.00\n" "W W\n" "W ? W\n" "W * W\n" "., W\n" "W W W\n" "W W\n" "1 W W\n" "W . í\n" "W IVA ISENTO — Alineas &) e c) . 27 Artigo 9 W 5 W SUB-TOTAL * 630 . OOW (*)\n" "L “2__ W W _“ “__mw ___-“ _, \"I\n" "W wannn CWAEWKO 6.50% 23% TOTAL€\n" "& Euros 630.00 40.95 .42 680.37\n" "& Euros 630.00 40.95 9.42 680.37\n" "288.890.234,23\n" "SEISCENTOS E OITENTA EUROS E TRINTA E SETE CENTIMOS ****************\n" "********************************************************************\n\n" "SWIFT/BIC: BPNPPTPL\n\n" "at\n\n" "Delegação Madeira\n\n" "Calçada de São Lourenço, nº 3, 2 C\n" "9000-061 Funchal\n\n" "Tel. 291 225 727 ' Fax. 291 230 694\n") matches = re.finditer(regex, test_str) 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