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)(?<=proc )(?P<type>\w+?);(?!.+\bproc ).*(?=NOTE: PROCEDURE )") test_str = ("proc format;\n\n" "2018-04-12T07:45:52,430 INFO [00000009] :t707982 - 26 \n" "2018-04-12T07:45:52,430 INFO [00000009] :t707982 - 27 \n" "2018-04-12T07:45:52,433 INFO [00000009] :t707982 - 35 '0010','0019'=\"08\"\n" "2018-04-12T07:45:52,434 INFO [00000009] :t707982 - 36 '0005','0007','0011','0013'=\"09\"\n\n" "NOTE: There were 95219365 observations read from the data set WORK.TESTE1.\n" "2018-04-12T07:55:41,536 INFO [00000018] :t707982 - NOTE: The data set WORK.TESTE1 has 95219365 observations and 9 variables.\n" "2018-04-12T07:55:41,537 INFO [00000018] :t707982 - NOTE: Compressing data set WORK.TESTE1 decreased size by 34.04 percent. \n" "2018-04-12T07:55:41,538 INFO [00000018] :t707982 - Compressed is 92230 pages; un-compressed would require 139823 pages.\n\n" "proc format; \n\n" "2018-04-12T08:45:52,430 INFO [00000009] :t707982 - 26 \n" "2018-04-12T08:45:52,434 INFO [00000009] :t707982 - 36 '0005','0007','0011','0013'=\"09\"\n" "NOTE: There were 95219365 observations read from the data set WORK.TESTE2.\n" "2018-04-12T08:55:41,536 INFO [00000018] :t707982 - NOTE: The data set WORK.TESTE2 has 95219365 observations and 9 variables.\n" "2018-04-12T08:55:41,537 INFO [00000018] :t707982 - NOTE: Compressing data set WORK.TESTE2 decreased size by 34.04 percent. \n" "2018-04-12T08:55:41,538 INFO [00000018] :t707982 - Compressed is 92230 pages; un-compressed would require 139823 pages.\n" "2018-04-12T08:55:42,230 INFO [00000018] :t707982 - NOTE: PROCEDURE format used (Total process time):\n" "2018-04-12T08:55:42,231 INFO [00000018] :t707982 - real time 2:07.03\n" "2018-04-12T08:55:42,231 INFO [00000018] :t707982 - user cpu time 1:56.98\n" "2018-04-12T08:55:42,231 INFO [00000018] :t707982 - system cpu time 39.22 seconds\n" "2018-04-12T08:55:42,231 INFO [00000018] :t707982 - memory 3159502.32k") 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