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"^var (.*?Infos) = .*?data: (.*?),$", flags=re.MULTILINE | re.DOTALL) test_str = ("var syntheticResponseTimeDistributionInfos = {\n" " data: {\"result\": {\"minY\": 1.0, \"minX\": 0.0, \"ticks\": [[0, \"Requests having \\nresponse time <= 500ms\"], [1, \"Requests having \\nresponse time > 500ms and <= 1,500ms\"], [2, \"Requests having \\nresponse time > 1,500ms\"], [3, \"Requests in error\"]], \"maxY\": 37.0, \"series\": [{\"data\": [[0.0, 37.0]], \"color\": \"#9ACD32\", \"isOverall\": false, \"label\": \"Requests having \\nresponse time <= 500ms\", \"isController\": false}, {\"data\": [], \"color\": \"yellow\", \"isOverall\": false, \"label\": \"Requests having \\nresponse time > 500ms and <= 1,500ms\", \"isController\": false}, {\"data\": [], \"color\": \"orange\", \"isOverall\": false, \"label\": \"Requests having \\nresponse time > 1,500ms\", \"isController\": false}, {\"data\": [[3.0, 1.0]], \"color\": \"#FF6347\", \"isOverall\": false, \"label\": \"Requests in error\", \"isController\": false}], \"supportsControllersDiscrimination\": false, \"maxX\": 3.0, \"title\": \"Synthetic Response Times Distribution\"}},\n" " getOptions: function() {\n" " return {\n\n\n" "var activeThreadsOverTimeInfos = {\n" " data: {\"result\": {\"minY\": 1.0, \"minX\": 1.5931058172E12, \"maxY\": 1.0, \"series\": [{\"data\": [[1.5931058186E12, 1.0], [1.5931058196E12, 1.0], [1.5931058175E12, 1.0], [1.5931058185E12, 1.0], [1.5931058195E12, 1.0], [1.5931058205E12, 1.0], [1.5931058184E12, 1.0], [1.5931058194E12, 1.0], [1.5931058204E12, 1.0], [1.5931058173E12, 1.0], [1.5931058183E12, 1.0], [1.5931058193E12, 1.0], [1.5931058203E12, 1.0], [1.5931058172E12, 1.0], [1.5931058213E12, 1.0], [1.5931058192E12, 1.0], [1.5931058202E12, 1.0], [1.5931058212E12, 1.0], [1.5931058181E12, 1.0], [1.5931058191E12, 1.0], [1.5931058201E12, 1.0], [1.5931058211E12, 1.0], [1.593105818E12, 1.0], [1.593105819E12, 1.0], [1.59310582E12, 1.0], [1.593105821E12, 1.0], [1.5931058179E12, 1.0], [1.5931058189E12, 1.0], [1.5931058209E12, 1.0], [1.5931058178E12, 1.0], [1.5931058198E12, 1.0], [1.5931058208E12, 1.0], [1.5931058177E12, 1.0], [1.5931058187E12, 1.0], [1.5931058197E12, 1.0], [1.5931058207E12, 1.0], [1.5931058176E12, 1.0]], \"isOverall\": false, \"label\": \"ThreadGroup\", \"isController\": false}, {\"data\": [[1.5931058224E12, 1.0], [1.5931058217E12, 1.0]], \"isOverall\": false, \"label\": \"tearDown Thread Group\", \"isController\": false}], \"supportsControllersDiscrimination\": false, \"granularity\": 100, \"maxX\": 1.5931058224E12, \"title\": \"Active Threads Over Time\"}},\n" " getOptions: function() {\n") subst = "var $1 = {\\n data: $1_data," 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