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"(?=Bank)(.*)(?<=IBAN)" test_str = "Hurtigruta Carglass AS\\r\\n1(1)\\r\\n(Ensjøvn. 17)\\r\\nPOSTBOKS 6452 ETTERSTAD\\r\\n0605 OSLO\\r\\nForetaksregisteret NO 985758220 MVA\\r\\nKunde 100454 Avdeling Alnabru\\r\\nBank\\r\\n4202 33 70055\\r\\nTRYG FORSIKRING\\r\\nIBAN NO77 4202 3370 055\\r\\nPostboks 7070\\r\\nSWIFT SPTRNO22\\r\\n5020 BERGEN\\r\\nTlf 98709500\\r\\nFax 22 70 76 01\\r\\nregnskap@hurtigruta.no\\r\\nDeres referanse\\r\\nwww.hurtigruta.no\\r\\nFAKTURA 14780866\\r\\nFakturadato 08.06.2019 Skadedato 07.06.2019\\r\\nForfallsdato 08.07.2019 Reg.nr. EK71995 Vår referanse Avdeling Alnabru\\r\\nKID147808661\\r\\nLeveringsdato 07.06.2019 Kundens ordrenr\\r\\n0000456218\\r\\nVarenr Varetekst Antall Pris % Sum\\r\\nRep av frontrute\\r\\n50 REP-1 1,0 STK 650,00 650,00\\r\\nm.v.a. av kr 650,00 162,50\\r\\nTotalsum: 812,50\\r\\nAvrunding 0,50\\r\\nSum å betale: 813,00\\r\\nBankkontonummer: 4202 33 70055\\r\\nBiler med fradragsrett for merverdiavgift, skal svare denne avgiften i tillegg til en eventuell egenandel.\\r\\nFor disse bilene dekker forsikringsselskapet kun netto faktura" 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