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

/
/
gmi

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"^([0-9]{8,10}[^a-zA-Z\s])$" test_str = ("This is a number also 123-456-7890\n" "This is not a number: 123456\n" "This is not a number, but an address 123 456\n" "My parameters are 90/60/90 - 120/150/120 - not a phone number\n" "I am cheeky and I use letter 0 instead of zero 604_213_0293 Or I use | symbol\n" "and also 604_2|3_0293 may happen\n" "The most classical Canadian number is +1(604)123-4567 hi hi\n" "Dashes can be different 123-456–7890\n" "And looks like phone +I(800)-2l4-15O but contain combination with letter\n\n" " 'oi+I(222)3334444oi',\n" " 'io+0 (222) 333 444Ooi',\n" " 'O+l ( 222 ) 3|3 4O40O',\n" " '+O+l ( 222 ) 3|3 4O40O',\n" "069123521\n" "0691235523\n" "06912355312\n" "in text 123-567\n" "+(1)-23567 text\n" "in text 123567-2 text\n\n" "---------------------------------------\n\n" "in text 1-800-123-123\n" "1-800-123-123 text\n" "in text 1-800-123-123 text\n\n" "---------------------------------------\n\n" "in text 1-800-123-123\n" "1-800-123-123 text\n" "in text 1-800-123-123 text\n\n\n" "---------------------------------------\n" "n0OOOOOOOOOOOO\n\n" "h1iiiiiiiiiiiii\n\n" "in text +l-800-123-123\n" "1-8oo-I23-i23 text\n" "in text +1 (800)-l23-123 text\n\n" "phone\n" " '012345678',\n" " '0123456789',\n" " '01234567891',\n" " '012345678912',\n" " '0123456789123',\n" " '01234567891234',\n" " '012345678912345',\n" " '800-1234567',\n" " '8Oo-I234567-l',\n" " '+1(222)3334444',\n" " '+1 (222) 333 4444',\n" " '+1 ( 222 ) 333 4444',\n" " '+1-222-333-4444',\n" " '+1 222 333 4444',\n" " '236 - 332 - 6669',\n" " '(604)123-4567',\n" " '604 123 4567',\n" " '604_123_4567',\n" " '2368337551',\n" " '12223334444',\n" " '222) 333 4444',\n" " '3333 4444',\n" " '(437)1234567',\n" " '(888)1234123',\n\n" "not a phone\n" " '0',\n" " '01',\n" " '012',\n" " '0123',\n" " '01234',\n" " '012345',\n" " '0123456',\n" " '01234567',\n" " '90-60-90',\n" " '90/60/90',\n" " '0123456789123456',\n" " '+X (XXX) XXX XXXX',\n" " '1/23-4',\n" " '1 / 23 - 4',\n" " '1234/12,3-1234'") matches = re.finditer(regex, test_str, re.MULTILINE | re.IGNORECASE) 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