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

r"
"
g

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"Remarks: ([^\r]+)Members:" test_str = ("GBRG0A 00005 JULIEx 11/27/17 11:03:12 X3311073-00X DAMAGE\n\n" "Dig No : X3311073 Rev : 00X Digstart: 11/27/17 11:01\n" "Rcvd : 11/27/17 11:03 Priority: 0 Expires : 12/24/17 23:59\n" "Org Dig: X3311073 Rcvd: 11/27/17 11:01\n\n" "Firm : KNOX CONSTRUCTION Caller: DUSTIN KNOX\n" "CoAddr1: 1386 BRIDGEPORT RD\n" "City,St: MAQUON, IL Zip : 61458\n" "Phone : 309-337-6576 Ext :\n" "Call Bk: Done For : PATTY BAILEY\n" "SiteCnt: DUSTIN KNOX Phone : 309-337-6576\n\n" "County : KNOX Place: GALESBURG CIT\n" "Address: 522 ISLE ROYALE RD\n" "Subdiv : Cross: LOSEY ST\n\n" "Grids : T11NR01E09SW\n\n" "BestFit: 40.954957/-90.400618 40.954938/-90.399043\n" " : 40.953819/-90.400632 40.953799/-90.399057\n" "PreMark: YES Directional Boring: NO Depth>7Ft: NO\n" "Locatn : IN THE CITY OF GALESBURG,\n" "WrkType: FENCE POST INSTALLATION ***HIT LINE****\n" "Extent : LOCATE: THE WEST SIDE OF THE HOUSE.\n" "Remarks: REFER TO DIG# X003241591 TO ALL COMPANIES, CALLER STATES HIT A\n" " : MISMARKED CENTURY LINK LINE. CREW IS ON SITE. CALLED IN BY DUSTIN.\n\n" "Members: COMC0A GBRG0A GSD0A GSD0B IPC6A SCNT3A USIC0A\n\n" "View map at:\n" "http://newtin.julie1call.com/newtinweb/map_tkt.nap?TRG=32WSVUQRTTVORRtwo2") matches = re.finditer(regex, test_str) 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