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

Substitution
Processing...

Code Generator

Language

Generated Code

import re regex = re.compile(r"(?:(?=(?&V_Obj)){(?=(?:(?&V_KeyVal)(?&Sep_Obj))*?\s*(\"jobID\"\s*:\s*(?&V_Value)))(?=(?:(?&V_KeyVal)(?&Sep_Obj))*?\s*(\"exec\"\s*:\s*(?&V_Value)))(?:(?&V_KeyVal)(?&Sep_Obj))+})(?(DEFINE)(?<Sep_Ary>\s*(?:,(?!\s*[}\]])|(?=\])))(?<Sep_Obj>\s*(?:,(?!\s*[}\]])|(?=})))(?<Str>(?>\"[^\\\"]*(?:\\[\s\S][^\\\"]*)*\"))(?<Numb>(?>[+-]?(?:\d+(?:\.\d*)?|\.\d+)(?:[eE][+-]?\d+)?|(?:[eE][+-]?\d+)))(?<V_KeyVal>(?>\s*(?&Str)\s*:\s*(?&V_Value)\s*))(?<V_Value>(?>(?&Numb)|(?>true|false|null)|(?&Str)|(?&V_Obj)|(?&V_Ary)))(?<V_Ary>\[(?>\s*(?&V_Value)(?&Sep_Ary))*\s*\])(?<V_Obj>{(?>(?&V_KeyVal)(?&Sep_Obj))*\s*}))", flags=re.MULTILINE) test_str = ("{\n" " \"2597401\": [\n" " {\n" " \"jobID\": \"2597401\",\n" " \"account\": \"TG-CCR120014\",\n" " \"user\": \"charngda\",\n" " \"pkgT\": {\n" " \"pgi/7.2- 5\": {\n" " \"libA\": [\n" " \"libpgc.so\"\n" " ],\n" " \"flavor\": [\n" " \"default\"\n" " ]\n" " }\n" " },\n" " \"startEpoch\": \"1338497979\",\n" " \"runTime\": \"1022\",\n" " \"execType\": \"user:binary\",\n" " \"exec\": \"ft.D.64\",\n" " \"numNodes\": \"4\",\n" " \"sha1\": \"5a79879235aa31b6a46e73b43879428e2a175db5\",\n" " \"execEpoch\": 1336766742,\n" " \"execModify\": \"Fri May 11 15:05:42 2012\",\n" " \"startTime\": \"Thu May 31 15:59:39 2012\",\n" " \"numCores\": \"64\",\n" " \"sizeT\": {\n" " \"bss\": \"1881400168\",\n" " \"text\": \"239574\",\n" " \"data\": \"22504\"\n" " }\n" " },\n" " {\n" " \"jobID\": \"2597401\",\n" " \"account\": \"TG-CCR120014\",\n" " \"user\": \"charngda\",\n" " \"pkgT\": {\n" " \"pgi/7.2-5\": {\n" " \"libA\": [\n" " \"libpgc.so\"\n" " ],\n" " \"flavor\": [\n" " \"default\"\n" " ]\n" " }\n" " },\n" " \"startEpoch\": \"1338497946\",\n" " \"runTime\": \"33\",\n" " \"execType\": \"user:binary\",\n" " \"exec\": \"cg.C.64\",\n" " \"numNodes\": \"4\",\n" " \"sha1\": \"caf415e011e28b7e4e5b050fb61cbf71a62a9789\",\n" " \"execEpoch\": 1336766735,\n" " \"execModify\": \"Fri May 11 15:05:35 2012\",\n" " \"startTime\": \"Thu May 31 15:59:06 2012\",\n" " \"numCores\": \"64\",\n" " \"sizeT\": {\n" " \"bss\": \"29630984\",\n" " \"text\": \"225749\",\n" " \"data\": \"20360\"\n" " }\n" " },\n" " {\n" " \"jobID\": \"2597401\",\n" " \"account\": \"TG-CCR120014\",\n" " \"user\": \"charngda\",\n" " \"pkgT\": {\n" " \"pgi/7.2-5\": {\n" " \"libA\": [\n" " \"libpgc.so\"\n" " ],\n" " \"flavor\": [\n" " \"default\"\n" " ]\n" " }\n" " },\n" " \"startEpoch\": \"1338500447\",\n" " \"runTime\": \"145\",\n" " \"execType\": \"user:binary\",\n" " \"exec\": \"mg.D.64\",\n" " \"numNodes\": \"4\",\n" " \"sha1\": \"173de32e1514ad097b1c051ec49c4eb240f2001f\",\n" " \"execEpoch\": 1336766756,\n" " \"execModify\": \"Fri May 11 15:05:56 2012\",\n" " \"startTime\": \"Thu May 31 16:40:47 2012\",\n" " \"numCores\": \"64\",\n" " \"sizeT\": {\n" " \"bss\": \"456954120\",\n" " \"text\": \"426186\",\n" " \"data\": \"22184\"\n" " }\n" " },\n" " {\n" " \"jobID\": \"2597401\",\n" " \"account\": \"TG-CCR120014\",\n" " \"user\": \"charngda\",\n" " \"pkgT\": {\n" " \"pgi/7.2-5\": {\n" " \"libA\": [\n" " \"libpgc.so\"\n" " ],\n" " \"flavor\": [\n" " \"default\"\n" " ]\n" " }\n" " },\n" " \"startEpoch\": \"1338499002\",\n" " \"runTime\": \"1444\",\n" " \"execType\": \"user:binary\",\n" " \"exec\": \"lu.D.64\",\n" " \"numNodes\": \"4\",\n" " \"sha1\": \"c6dc16d25c2f23d2a3321d4feed16ab7e10c2cc1\",\n" " \"execEpoch\": 1336766748,\n" " \"execModify\": \"Fri May 11 15:05:48 2012\",\n" " \"startTime\": \"Thu May 31 16:16:42 2012\",\n" " \"numCores\": \"64\",\n" " \"sizeT\": {\n" " \"bss\": \"199850984\",\n" " \"text\": \"474218\",\n" " \"data\": \"27064\"\n" " }\n" " }\n" " ]\n" "}") subst = "{ $1, $2 }" result = regex.sub(subst, test_str) if result: print(result)

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