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
  • Match everything enclosed
    (?:...)
  • Capture everything enclosed
    (...)
  • 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"^(?P<Street>(?:[A-Za-z\d]+\h)+)\h{2,}(?P<LAT>-?\d*\.\d+)\h{2,}(?P<LON>-?\d*\.\d+)$" test_str = ("A Kriel Street -25.69664263 28.41030434\n" "Abraham Mogopodi Avenue -25.71338241 28.37033247\n" "Absalome Street -25.70997386 28.3568847\n" "Alan Paton Street -25.72122505 28.42021664\n" "Alfred Nzo Crescent -25.6882444 28.41519928\n" "Annah Mabusela Street -25.70656941 28.34339845\n" "Anton Lembede Street -25.71813448 28.41874969\n" "Aphane Nhlapo Street -25.7208474 28.38598257\n" "Apple Close -25.71151327 28.38914898\n" "Areyeng Street -25.72404151 28.38545561\n" "Aseletho Street -25.71910848 28.41628606\n" "Azikwelwa Street -25.70616386 28.40821879\n" "Azondo Street -25.69615534 28.41117811\n" "B Z Ndlazi Street -25.71074853 28.37073878\n" "Badanile Avenue -25.71883255 28.42320088\n" "Bahula Street -25.70728106 28.35488834\n" "Baloyi Close -25.72553726 28.38641741\n" "Bana Street -25.70942133 28.40631067\n" "Banana Close -25.71194649 28.39090203") 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