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
Processing...

Test String

Code Generator

Language

Generated Code

import re regex = re.compile(r"(?=\d{2,3}9\d+)(?<!\d)(\d{11,12})(?!\d)|(?<!\d)(\d{2}\s\d{5}\s\d{4})(?!\d)|(?<!\d)(0\d{2}\s\d{5}\s\d{4})(?!\d)|(?<!\d)(\d{2}\s9\s\d{4}\s\d{4})(?!\d)|(?<!\d)(0\d{2}\s9\s\d{4}\s\d{4})(?!\d)|(?<!\d)(\d{9})(?!\d)|(?<!\d)(\d\s\d{8})(?!\d)|(?<!\d)(\(\d{2}\)\d{9})(?!\d)|(?<!\d)(\(0\d{2}\)\d{9})(?!\d)|(?<!\d)(\(\d{2}\)\d{1}\s\d{4}\s\d{4})(?!\d)|(?<!\d)(\(0\d{2}\)\d{1}\s\d{4}\s\d{4})(?!\d)|(?<!\d)(\(\d{2}\)\s\d{1}\s\d{4}\s\d{4})(?!\d)|(?<!\d)(\(0\d{2}\)\s\d{1}\s\d{4}\s\d{4})(?!\d)", flags=re.MULTILINE) test_str = ("---> DEVE ENCONTRAR:\n" "11991234567 // /¯¯¯¯¯\n" "011991234567 // | (?=\\d{2,3}9\\d+)(?<!\\d)(\\d{11,12})(?!\\d)\n" "119111111111 // \\_____\n" "11 99123 4567 // (?<!\\d)(\\d{2}\\s\\d{5}\\s\\d{4})(?!\\d)\n" "011 99123 4567 // (?<!\\d)(0\\d{2}\\s\\d{5}\\s\\d{4})(?!\\d)\n" "11 9 9123 4567 // (?<!\\d)(\\d{2}\\s9\\s\\d{4}\\s\\d{4})(?!\\d)\n" "011 9 9123 4567 // (?<!\\d)(0\\d{2}\\s9\\s\\d{4}\\s\\d{4})(?!\\d)\n\n" "---> DEVE ENCONTRAR (EXEMPLOS DA PERGUNTA + ALGUMAS EXTENSÕES):\n" "993345987 // (?<!\\d)(\\d{9})(?!\\d)\n" "9 93345987 // (?<!\\d)(\\d\\s\\d{8})(?!\\d)\n" "(21)932324343 // (?<!\\d)(\\(\\d{2}\\)\\d{9})(?!\\d) ## OU: (?<!\\d)(\\d{9})(?!\\d)\n" "(021)932324343 // (?<!\\d)(\\(0\\d{2}\\)\\d{9})(?!\\d) ## OU: (?<!\\d)(\\d{9})(?!\\d)\n" "(21)9 3232 4343 // (?<!\\d)(\\(\\d{2}\\)\\d{1}\\s\\d{4}\\s\\d{4})(?!\\d)\n" "(021)9 3232 4343 // (?<!\\d)(\\(0\\d{2}\\)\\d{1}\\s\\d{4}\\s\\d{4})(?!\\d)\n" "(21) 9 3232 4343 // (?<!\\d)(\\(\\d{2}\\)\\s\\d{1}\\s\\d{4}\\s\\d{4})(?!\\d)\n" "(021) 9 3232 4343 // (?<!\\d)(\\(0\\d{2}\\)\\s\\d{1}\\s\\d{4}\\s\\d{4})(?!\\d)\n\n\n" "NÃO DEVE ENCONTRAR:\n" "11 99123 45671\n" "111 99123 4567\n" "011 99123 45678\n" "811 99123 45678\n" "a9999999999999999999989999123\n" "118111111111\n" "123456789123456789\n") matches = regex.finditer(test_str) for match_num, match in enumerate(matches, start=1): print(f"Match {match_num} was found at {match.start()}-{match.end()}: {match.group()}") for group_num, group in enumerate(match.groups(), start=1): print(f"Group {group_num} found at {match.start(group_num)}-{match.end(group_num)}: {group}")

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