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"(?s)(?:.*(?:datetime:)(?<datetime>.*?)(?:$|\s*\|))?(?:.*(?:hostname:)(?<hostname>.*?)(?:$|\s*\|))?(?:.*(?:threadId:)(?<threadId>.*?)(?:$|\s*\|))?(?:.*(?:userId:)(?<userId>.*?)(?:$|\s*\|))?(?:.*(?:correlationId:)(?<correlationId>.*?)(?:$|\s*\|))?(?:.*(?:applicationName:)(?<applicationName>.*?)(?:$|\s*\|))?(?:.*(?:direction:)(?<direction>.*?)(?:$|\s*\|))?(?:.*(?:operationName:)(?<operationName>.*?)(?:$|\s*\|))?(?:.*(?:className:)(?<className>.*?)(?:$|\s*\|))?(?:.*(?:methodName:)(?<methodName>.*?)(?:$|\s*\|))?(?:.*(?:latency:)(?<latency>.*?)(?:$|\s*\|))?(?:.*(?:clusterName:)(?<clusterName>.*?)(?:$|\s*\|))?(?:.*(?:webServiceType:)(?<webServiceType>.*?)(?:$|\s*\|))?(?:.*(?:strCode:)(?<strCode>.*?)(?:$|\s*\|))?(?:.*(?:strDescription:)(?<strDescription>.*?)(?:$|\s*\|))?(?:.*(?:payload:)(?<payload>.*?)(?:$|\s*\|))?(?:.*(?:requestVerb:)(?<requestVerb>.*?)(?:$|\s*\|))?(?:.*(?:httpStatusCode:)(?<httpStatusCode>.*?)(?:$|\s*\|))?(?:.*(?:httpHeaders:)(?<httpHeaders>.*?)(?:$|\s*\|))?(?:.*(?:requestUrl:)(?<requestUrl>.*?)(?:$|\s*\|))?(?:.*(?:code:)(?<code>.*?)(?:$|\s*\|))?(?:.*(?:strSystemName:)(?<strSystemName>.*?)(?:$|\s*\|))?(?:.*(?:description:)(?<description>.*?)(?:$|\s*\|))?(?:.*(?:content\-length:)(?<content_length>.*?)(?:\s*\|))?(?:.*(?:logMessage:)(?<logMessage>.*?)(?:$|\s*\|))?\n"), flags=re.MULTILINE) test_str = ("[INFO] 28 Jun 2018 14:02:29,480 SYSLOG->|datetime:20180628140229479+0000|hostname:marketingprofile-deployment-877c7f857-cv9d6/10.44.0.15(10.44.0.15)|threadId:47-http-nio-11551-exec-1(main)|userId:null|correlationId:c7943b58-a584-4cba-ad44-45cf1af3a400|applicationName:RETRIEVEMARKETINGPROFILE-V1|direction:ENTERING|operationName:RetrievalService|className:LogServletFilter|methodName:logRequest|clusterName:TXH|webServiceType:REST|payload:<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?><!--<INPUTINFO> <BBCAN>8881008923</BBCAN> </INPUTINFO>--><INPUTINFO> <APPLICATIONID>NCOG</APPLICATIONID> <CLINETREQUESTID>test</CLINETREQUESTID> <VISION> <CUSTOMERID>151862438</CUSTOMERID> <ACCOUNTID>0001</ACCOUNTID> </VISION> <!--<VOICECAN>0178430862672</VOICECAN>--> <!-- <BBCAN>060002792607</BBCAN> --> <!--<BTN>2016221232</BTN> --> <!-- <ADDRESS> <ADDRESSID>030862772</ADDRESSID> <STATE>MD</STATE> </ADDRESS> --> <!--<SSPBAN>0178430862772</SSPBAN>--> <!--<PCAN>E100007652</PCAN> --> </INPUTINFO>|requestVerb:POST|httpHeaders:content-length={534};ssp-correlationid={c7943b58-a584-4cba-ad44-45cf1af3a400};host={10.44.0.15:11551};content-type={text/xml};connection={Keep-Alive};accept-encoding={gzip};user-agent={Apache-HttpClient/4.1.1 (java 1.5)};|requestUrl:http://10.44.0.15:11551/retrieveMarketingProfile/RetrievalService?null\n" "Security framework of XStream not initialized, XStream is probably vulnerable.\n" "[INFO] 28 Jun 2018 14:02:29,592 SYSLOG->|datetime:20180628140229591+0000|hostname:marketingprofile-deployment-877c7f857-cv9d6/10.44.0.15(10.44.0.15)|threadId:47-http-nio-11551-exec-1(main)|userId:null|correlationId:c7943b58-a584-4cba-ad44-45cf1af3a400|applicationName:RETRIEVEMARKETINGPROFILE-V1|direction:ENTERING|className:com.verizon.ssp.gateway.adapter.WebServiceAdaptor|clusterName:TXH|webServiceType:REST|payload:<!--<INPUTINFO>\n" "<BBCAN>8881008923</BBCAN>\n" "</INPUTINFO>-->\n" "<INPUTINFO>\n" " <APPLICATIONID>NCOG</APPLICATIONID>\n" " <CLINETREQUESTID>test</CLINETREQUESTID>\n" "<VISION>\n" " <CUSTOMERID>151862438</CUSTOMERID>\n" " <ACCOUNTID>0001</ACCOUNTID>\n" "</VISION>\n" "<!--<VOICECAN>0178430862672</VOICECAN>-->\n" "<!-- <BBCAN>060002792607</BBCAN> -->\n" "<!--<BTN>2016221232</BTN> -->\n" "<!-- <ADDRESS> \n" " <ADDRESSID>030862772</ADDRESSID>\n" " <STATE>MD</STATE>\n" "</ADDRESS> -->\n" "<!--<SSPBAN>0178430862772</SSPBAN>-->\n" "<!--<PCAN>E100007652</PCAN> -->\n" "</INPUTINFO>|content-length:534|logMessage:<!--<INPUTINFO>\n" "<BBCAN>8881008923</BBCAN>\n" "</INPUTINFO>-->\n" "<INPUTINFO>\n" " <APPLICATIONID>NCOG</APPLICATIONID>\n" " <CLINETREQUESTID>test</CLINETREQUESTID>\n" "<VISION>\n" " <CUSTOMERID>151862438</CUSTOMERID>\n" " <ACCOUNTID>0001</ACCOUNTID>\n" "</VISION>\n" "<!--<VOICECAN>0178430862672</VOICECAN>-->\n" "<!-- <BBCAN>060002792607</BBCAN> -->\n" "<!--<BTN>2016221232</BTN> -->\n" "<!-- <ADDRESS> \n" " <ADDRESSID>030862772</ADDRESSID>\n" " <STATE>MD</STATE>\n" "</ADDRESS> -->\n" "<!--<SSPBAN>0178430862772</SSPBAN>-->\n" "<!--<PCAN>E100007652</PCAN> -->\n" "</INPUTINFO>\n" "[ERROR] 28 Jun 2018 14:02:29,687 BaseDao : Consistency Level : ONE for Key Space: grid_mktprofile\n" "[INFO]threadId:47-http-nio-11551-exec-1(main)|userId:null|correlationId:c7943b58-a584-4cba-ad44-45cf1af3a400|\n" "[INFO]threadId:47-http-nio-11551-exec-1(main)|userId:null|correlationId:c7943b58-a584-4cba-ad44-45cf1af3a400|\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