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

/
/
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"^--.*--$|=|('|\").*?\1|[^\t\n\f \/>\"'=]+" test_str = ("[2021-11-24 16:26:27,931] [dc4-10.123.66.197-http-bio-8080-exec-1500_LADC_72E18BC06AF39AA1FCC7A95DF068E068] [INFO] [LoggingInInterceptor] [] [Inbound Message\n" "----------------------------\n" "ID: 5520137\n" "Response-Code: 200\n" "Encoding: UTF-8\n" "Content-Type: text/xml;charset=utf-8\n" "Headers: {connection=[keep-alive], Content-Length=[3351], Content-Security-Policy=[default-src * 'unsafe-inline' 'unsafe-eval'; script-src * 'unsafe-inline' 'unsafe-eval'; connect-src * 'unsafe-inline'; img-src * data: blob: 'unsafe-inline'; frame-src *; style-src * 'unsafe-inline';], content-type=[text/xml;charset=utf-8], Date=[Wed, 24 Nov 2021 16:26:27 GMT], Keep-Alive=[timeout=30], Referrer-Policy=[origin-when-cross-origin], Server=[SWS], SOAPAction=[\"\"], Strict-Transport-Security=[max-age=31536000], X-Content-Type-Options=[nosniff], X-Frame-Options=[SAMEORIGIN], X-XSS-Protection=[1; mode=block]}\n" "Payload: <?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" "<soap-env:Envelope xmlns:soap-env=\"http://schemas.xmlsoap.org/soap/envelope/\"><soap-env:Header><eb:MessageHeader xmlns:eb=\"http://www.ebxml.org/namespaces/messageHeader\" eb:version=\"1.0\" soap-env:mustUnderstand=\"1\"><eb:From><eb:PartyId eb:type=\"URI\">123123</eb:PartyId></eb:From><eb:To><eb:PartyId eb:type=\"URI\">99999</eb:PartyId></eb:To><eb:CPAId>LA</eb:CPAId><eb:ConversationId>LADC_72E18BC06AF39AA1FCC7A95DF068E068</eb:ConversationId><eb:Service>SabreCommand</eb:Service><eb:Action>SabreCommandLLSRS</eb:Action><eb:MessageData><eb:MessageId>2651654591878281621</eb:MessageId><eb:Timestamp>2021-11-24T16:26:27</eb:Timestamp><eb:RefToMessageId>mid:2021-11-24T16:26:27@sabre.com</eb:RefToMessageId></eb:MessageData></eb:MessageHeader><wsse:Security xmlns:wsse=\"http://schemas.xmlsoap.org/ws/2002/12/secext\"><wsse:BinarySecurityToken valueType=\"String\" EncodingType=\"wsse:Base64Binary\">Shared/IDL:IceSess\\/SessMgr:1\\.0.IDL/Common/!ICESMS\\/RESE!ICESMSLB\\/RES.LB!XXXXXXXXX9844!1410!261</wsse:BinarySecurityToken></wsse:Security></soap-env:Header><soap-env:Body><SabreCommandLLSRS xmlns=\"http://webservices.sabre.com/sabreXML/2003/07\" EchoToken=\"String\" TimeStamp=\"2021-11-24T16:26:27\" Target=\"Production\" Version=\"2003A.TsabreXML1.6.1\" SequenceNmbr=\"1\" PrimaryLangID=\"en-us\" AltLangID=\"en-us\">\n" " <Response><![CDATA[CZMWQP]]><![CDATA[\n" " 1.1SEREY/ANTOINE]]><![CDATA[\n" " 1 AF1318V 24DEC F CDGFRA HK1 1525 1645 /RLAF*3AL3UX /E]]><![CDATA[\n" " /OPERATED BY HOP]]><![CDATA[\n" " 2 LA8071L 24DEC F FRAGRU HK1 2015 0420 25DEC J /E]]><![CDATA[\n" " /OPERATED BY LATAM AIRLINES BRASIL]]><![CDATA[\n" " 3 LA4777L 25DEC J GRUCWB HK1 0820 0925 /E]]><![CDATA[\n" " /OPERATED BY LATAM AIRLINES BRASIL]]><![CDATA[\n" "TKT/TIME LIMIT]]><![CDATA[\n" " 1.T-28OCT-UHN5SHT]]><![CDATA[\n" " 2.TE 0452159694657 SEREY/A UHN5SHT 1448/28OCT]]><![CDATA[\n" "VCR COUPON DATA EXISTS *VI TO DISPLAY]]><![CDATA[\n" "PHONES]]><![CDATA[\n" " 1.HDQ33-33-762493204-M]]><![CDATA[\n" "PASSENGER EMAIL DATA EXISTS *PE TO DISPLAY ALL]]><![CDATA[\n" "PRICE QUOTE RECORD EXISTS - *PQS]]><![CDATA[\n" "LA FACTS]]><![CDATA[\n" " 1.SSR FOID LA HK1/PPFR15DC33906]]><![CDATA[\n" " 2.OSI VENTA WWW.LAN.COM]]><![CDATA[\n" " 3.SSR ADTK LA TO AF BY 31OCT 1200 HDQ OTHERWISE WILL BE XLD]]><![CDATA[\n" " 4.SSR LAXP LA 8071L24DEC/LATAM XP USER NN1 ]]><![CDATA[\n" " 6.SSR BRND LA 8071L24DEC/SL ]]><![CDATA[\n" " 7.SSR LAXP LA 4777L25DEC/LATAM XP USER NN1 ]]><![CDATA[\n" " 9.SSR BRND LA 4777L25DEC/SL ]]><![CDATA[\n" "GENERAL FACTS]]><![CDATA[\n" " 1.SSR FOID AF HK1/PPFR15DC33906]]><![CDATA[\n" " 2.OSI YY VENTA WWW.LAN.COM]]><![CDATA[\n" " 3.SSR OTHS AF LAXP]]><![CDATA[\n" " 4.SSR OTHS AF LAXP]]><![CDATA[\n" " 6.SSR OTHS AF LAXP]]><![CDATA[\n" " 7.OSI LA SC.REAC 0228/31OCT21]]><![CDATA[\n" " 8.SSR OTHS AF LAXP]]><![CDATA[\n" " 9.SSR OTHS AF LAXP]]><![CDATA[\n" "REMARKS]]><![CDATA[\n" " 1.H-ID VENTA WWW.1646474003]]><![CDATA[\n" " 2.H-LANCOM PAYMENT ATTEMPT]]><![CDATA[\n" " 4.H-PLS CHK POSS DUPE OR LAN WILL CNL AFTER 12 HRS]]><![CDATA[\n" " 5.H-PLS ADV TKT NBR BEFORE 31OCT21 1256 UHN LT OR AUTO CNL]]><![CDATA[\n" " 6.H-SERVICE FEE EUR0.00/P1]]><![CDATA[\n" " 7.H-IDVENTAPAGO WWW.1646474983]]><![CDATA[\n" " 8.PNR WORKED ARU]]><![CDATA[\n" " 9.NO ACTIONABLE TICKETS]]><![CDATA[\n" " 10.NO ACTIONABLE TICKETS]]><![CDATA[\n" "OAC - LA UHN LW 2049849 ]]><![CDATA[\n" "UHN-UHN-LW.UHN5SHT 0656/28OCT21 CZMWQP H]]></Response>\n" "</SabreCommandLLSRS></soap-env:Body></soap-env:Envelope>") 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