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

r"
"
gmi

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"^weight.+average.+(\n.+){0,2}(share|basic|ordinary).+(?P<d1>\s[\d,]+)\s+(?P<d2>\s[\d,]+)" test_str = ("VITROX CORPORATION BERHAD \n" "(Incorporated in Malaysia) \n" "Company No: 200401011463 (649966-K) \n" "QUARTERLY REPORT ON RESULTS FOR THE SECOND QUARTER ENDED 30 JUNE 2020 \n" "B. DISCLOSURE REQUIREMENTS AS SET OUT IN APPENDIX 9B OF BURSA SECURITIES \n" "MAIN MARKET LISTING REQUIREMENTS (cont’d) \n" "B10 Earnings per share \n" "INDIVIDUAL QUARTER CUMULATIVE QUARTER\n" "Corresponding\n" "Corresponding Current preceding\n" "Current quarter preceding period-to-date period-to-date\n" "ended quarter ended ended ended\n" "30-Jun-20 30-Jun-19 30-Jun-20 30-Jun-19\n" "Profit attributable to owners of \n" "the Company (RM'000) 22,922 24,387 43,987 48,003\n" "Weighted average number of\n" "shares for computing basis\n" "earnings per share ('000) 471,092 470,718 471,092 470,718\n" "Basic earnings per share (sen) 4.87 5.18 9.34 10.20\n" "Weighted average number of\n" "shares for computing diluted \n" "earnings per share ('000) 472,121 4 71,896 472,121 471,896\n" "Diluted earnings per share (sen) 4.86 5.17 9.32 10.17\n" "B11 Auditors’ report on preceding annual financial statements \n" "The auditors’ report on the financial statements for the year ended 31 December 2019 was not subject to \n" "any qualification. \n" "13 ") matches = re.finditer(regex, test_str, re.MULTILINE | re.IGNORECASE) 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