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

/
/
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"\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}.\d{3}.*(?:Message Picked from the queue....|Response Message : )([\S\s]+?>)\n\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}.\d{3}" test_str = ("2018-11-25 14:10:29.184 [ajp-bio-172.27.9.196-8009-exec-1] ERROR c.q.j.c.a.event.AuditEventHandler U:UNKNOWN SC:17618 TX:0 - SesIdCode is null. So no audit log transaction for this transaction\n" "2018-11-25 14:10:29.184 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.p.component.SenderComponent U:UNKNOWN SC:17618 TX:0 - SendMessage, Invockation End..\n" "2018-11-25 14:10:38.666 [ajp-bio-172.27.9.196-8009-exec-1] DEBUG c.e.r.p.endpoint.PickerProcessor U:UNKNOWN SC:17618 TX:0 - Message Picked from the queue....<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\">\n" " <soapenv:Header />\n" " <soapenv:Body>\n" " <EAI_MESSAGE>\n" " <EAI_HEADER>\n" " <ServiceName>SMS</ServiceName>\n" " <ServiceType>SendSms</ServiceType>\n" " <ServiceVersion>1.0</ServiceVersion>\n" " <Client>xx</Client>\n" " <ClientChannel>SBA</ClientChannel>\n" " <MsgChannel>WebServices</MsgChannel>\n" " <SecurityInfo>\n" " <Authentication>\n" " <UserId>xxx</UserId>\n" " <Password>xxx</Password>\n" " </Authentication>\n" " <Authorization>\n" " <UserId>xxx</UserId>\n" " </Authorization>\n" " </SecurityInfo>\n" " <SnapIns>\n" " <NameValue Name=\"\" Value=\"\" />\n" " </SnapIns>\n" " <RequestorLanguage>E</RequestorLanguage>\n" " <EaiReference>0</EaiReference>\n" " <ReturnCode>0000</ReturnCode>\n" " </EAI_HEADER>\n" " <EAI_BODY>\n" " <EAI_REQUEST>\n" " <SendSmsRequest>\n" " <RefID>502521</RefID>\n" " <ISD>974</ISD>\n" " <PhoneNO>xxx</PhoneNO>\n" " <Message>Dear User, Your unique OTP pin for xxx is xxxx</Message>\n" " <Language>E</Language>\n" " <Priority>2</Priority>\n" " <SchDate />\n" " <SrcKey>xx</SrcKey>\n" " <Department>xx xx</Department>\n" " <SMSUser>SMS Alerter</SMSUser>\n" " </SendSmsRequest>\n" " </EAI_REQUEST>\n" " </EAI_BODY>\n" " </EAI_MESSAGE>\n" " </soapenv:Body>\n" "</soapenv:Envelope>\n" "2018-11-25 14:10:38.666 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.process.GenericProcessor U:UNKNOWN SC:17618 TX:0 - Starting the processor -com.eix.processor.persistence.InPersisterProcessor\n" "2018-11-25 14:10:38.666 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.p.p.InPersisterProcessor U:UNKNOWN SC:17618 TX:0 - In Persister Processor is invoking...\n" "2018-11-25 14:10:38.666 [ajp-bio-172.27.9.196-8009-exec-1] ERROR c.q.j.c.a.event.AuditEventHandler U:UNKNOWN SC:17618 TX:0 - SesIdCode is null. So no audit log transaction for this transaction\n" "2018-11-25 14:10:38.673 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.m.s.i.MessagePersistenceServiceImpl U:UNKNOWN SC:17600 TX:0 - in saveMessage\n" "2018-11-25 14:10:38.673 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.audit.handler.EixAuditListener U:UNKNOWN SC:17600 TX:0 - Got eix ID from Instance ID 1\n" "2018-11-25 14:10:38.673 [ajp-bio-172.27.9.196-8009-exec-1] INFO \n" "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - No of Routes are--1\n" "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.message.util.ConditionHelper U:UNKNOWN SC:17740 TX:0 - Start if verifyCondition for : null\n" "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - conditionTestResult : true\n" "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - In populateRecipient-- Start -->null\n" "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Method identifyCopyRecipients Start\n" "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Method identifyCopyRecipients End\n" "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - In populateRecipient-- End\n" "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Method identifyMessageRecipientsforManualRouting -- End\n" "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - allRecipientinErrorOnNoRecipient : false\n" "2018-11-25 14:27:58.097 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Method updateParentAddrCommDtls Start\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - addrCommList.size() --->> 0\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - messageRecipients without Adrs Com ID() --->> MessageRecipient [messageType=null, messageVersion=null, messageStandard=null, envelopeType=null, splitterClassName=null, addressType=null, address=null]\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - ----Recipients are----\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient AddressComm ID--null\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Address Type--null\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Participant ID--null\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Route Communication ID--null\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Route Communication Address Type--null\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Address--null\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Message Type--null\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Message Version--null\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Message Standard--null\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Address Envelope Type--null\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Recipient Splitter Class--null\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Send Original Message--null\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - -------------------------------------\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.s.i.MessageRouteServiceImpl U:UNKNOWN SC:17740 TX:0 - Method identifyMessageRecipients -- End\n" "2018-11-25 14:27:58.098 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.p.route.MessageRouteProcessor U:UNKNOWN SC:17740 TX:0 - MessageRouteProcessor process method -- End\n" "2018-11-25 14:27:58.099 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.process.GenericProcessor U:UNKNOWN SC:17740 TX:0 - Starting the processor -com.eix.processor.system.WebServiceProcessor\n" "2018-11-25 14:27:58.099 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.p.system.WebServiceProcessor U:UNKNOWN SC:17740 TX:0 - Service Processor is invoking...\n" "2018-11-25 14:27:58.099 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.w.c.i.impl.CheckInServiceImpl U:UNKNOWN SC:17740 TX:0 - Invoking webservice http://alteainterface.qatarairways.com.qa/AlteaODS/AlteaODS.svc\n" "2018-11-25 14:27:58.178 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.w.c.i.impl.CheckInServiceImpl U:UNKNOWN SC:17740 TX:0 - Response Message : <MESSAGE><HEADER><ServiceName>xxxx xxxx</ServiceName><ServiceType>PassengerInfo</ServiceType><ServiceVersion>1.0</ServiceVersion><Client>xxx</Client><ClientChannel>xx</ClientChannel><MsgChannel>WebServices</MsgChannel><SecurityInfo><Authentication><UserId>xx</UserId><Password>xxx</Password></Authentication></SecurityInfo></HEADER><BODY><RESPONSE><passengerStatus>Invalid</passengerStatus><RegisteredFlight></RegisteredFlight><passengerPhone></passengerPhone><passengerEmail></passengerEmail><FFPNumber></FFPNumber></RESPONSE></BODY></MESSAGE>\n" "2018-11-25 14:27:58.178 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.r.process.GenericProcessor U:UNKNOWN SC:17740 TX:0 - Starting the processor -com.eix.processor.persistence.OutPersisterProcessor\n" "2018-11-25 14:27:58.178 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.p.p.OutPersisterProcessor U:UNKNOWN SC:17740 TX:0 - Out Persister Processor is invoking...\n" "2018-11-25 14:27:58.179 [ajp-bio-172.27.9.196-8009-exec-1] ERROR c.q.j.c.a.event.AuditEventHandler U:UNKNOWN SC:17740 TX:0 - SesIdCode is null. So no audit log transaction for this transaction\n" "2018-11-25 14:27:58.185 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.m.s.i.MessagePersistenceServiceImpl U:UNKNOWN SC:17633 TX:0 - start updateINAndInsertOutMessageSync\n" "2018-11-25 14:27:58.185 [ajp-bio-172.27.9.196-8009-exec-1] WARN c.e.audit.handler.EixAuditListener U:UNKNOWN SC:17633 TX:0 - Authentication is null\n" "2018-11-25 14:27:58.187 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.audit.handler.EixAuditListener U:UNKNOWN SC:17633 TX:0 - Got eix ID from Instance ID 1\n" "2018-11-25 14:27:58.187 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.audit.handler.EixAuditListener U:UNKNOWN SC:17633 TX:0 - ****** Returning EIX ID-> 3\n" "2018-11-25 14:27:58.187 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.audit.handler.EixAuditListener U:UNKNOWN SC:17633 TX:0 - Got eix ID from Instance ID 1\n" "2018-11-25 14:27:58.188 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.audit.handler.EixAuditListener U:UNKNOWN SC:17633 TX:0 - ****** Returning EIX ID-> 3\n" "2018-11-25 14:27:58.195 [ajp-bio-172.27.9.196-8009-exec-1] ERROR c.q.j.c.a.event.AuditEventHandler U:UNKNOWN SC:17633 TX:0 - SesIdCode is null. So no audit log transaction for this transaction\n" "2018-11-25 14:27:58.195 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.p.component.SenderComponent U:UNKNOWN SC:17633 TX:0 - SendMessage, Invockation Start..\n" "2018-11-25 14:27:58.195 [ajp-bio-172.27.9.196-8009-exec-1] ERROR c.q.j.c.a.event.AuditEventHandler U:UNKNOWN SC:17633 TX:0 - SesIdCode is null. So no audit log transaction for this transaction\n" "2018-11-25 14:27:58.202 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.m.s.i.MessagePersistenceServiceImpl U:UNKNOWN SC:17618 TX:0 - in updateSendStatusInOutMessage\n" "2018-11-25 14:27:58.202 [ajp-bio-172.27.9.196-8009-exec-1] INFO c.e.m.d.r.i.OutMessageRepositoryImpl U:UNKNOWN SC:17618 TX:0 - in updateSendStatusInOutMessage\n") 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