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"(?:\G(?!\A)|Acheminement conso)[\s\S]*?\KHeure Pleine Saison Basse" test_str = ("Electricité n° de\\n\n" "compteur ancien\\n\n" "index nouvel\\n\n" "index conso\\n\n" "kWh/Qté prix unitaire\\n\n" "HT en euros montant HT\\n\n" "en euros taux de\\n\n" "TVA\\n\n" "Contribution cee du 14/07/22 au 13/08/22 143020,00495 70,7920,0%\\n\n" "Evolutions arenh du 14/07/22 au 13/08/22 14302-0,03149 -450,3720,0%\\n\n" "Consommation du 14/07/22 au 13/08/22 154\\n\n" "Heure Pleine Saison Basse 1\n" "Heure Pleine Saison Basse 2\n" "Heure Creuse Saison Basse 2\n" "Acheminement conso\\n\n" "kWh/Qté prix unitaire\\n\n" "HT en euros montant HT\\n\n" "en euros taux de\\n\n" "TVA\\n\n" "Composante de comptage du 1\n" "Composante de comptage du 2\n" "Composante de soutirage du 1\n" "Composante de soutirage du 2\n" "Composante de gestion 1\n" "Composante de gestion 2\n" "Consommation du 14/07/22 au 31/07/22 Heure Pleine Saison Basse 56200,02000 112,4020,0%\\n\n" "Heure Creuse Saison Basse 26840,01700 45,6320,0%\\n\n" "Consommation du 01/08/22 au 13/08/22\\n\n" "Heure Pleine Saison Basse 3\n" "Heure Creuse Saison Basse 4\n" "Heure Pleine Saison Basse 5\n" "Heure Pleine Saison Basse 6\n" "Heure Pleine Saison Basse 7\n" "Services et prestations techniques conso\\n\n" "kWh/Qté prix unitaire\\n\n" "HT en euros montant HT\\n\n" "en euros taux de\\n\n" "TVA\\n\n" "Espace Client Gratuit\\n\n" "Taxes et Contributions conso\\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