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"
"
mg

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"(?P<line1>^(\w|\s+\w)[a-z]\w+[^\d:]*$)\n(\s+)?(?P<line2>(([A-Za-z ,()]+)|(.*)?(\(\w+.*\)))(\s+)?((-[\d,]+|[\d,]+)\s(\s+)?(-[\d,]+|[\d,]+).*))" test_str = ("Frontken Corporation Berhad -651020-T 55\n" "ANNUAL REPORT 2016\n" "statements Of cash Flows \n" "For The Year Ended 31 December 2016\n" " The Group The company \n" " 2016 2015 2016 2015\n" " Rm Rm Rm Rm\n" "CASH FLOWS FROM/ (FOR) OPERATING ACTIVITIES \n" "Profit before tax 33,344,738 15,998,086 6,154,262 178,853\n" "Adjustments for: \n" " Depreciation of property, plant \n" " and equipment 17,193,402 18,132,726 24,047 23,816\n" " Interest expense 1,146,951 1,494,353 340,916 555,514\n" " Allowance for impairment loss \n" " on plant and equipment 51,841 1,713,303 0 0 \n" " Unrealised (gain)/loss on \n" " foreign exchange -1,428,927 -2,918,303 -14,377 2,217,362\n" " Allowance for impairment losses \n" " on amount owing by a subsidiary 0 0 1,476,080 0 \n" " Allowance for impairment losses \n" " on receivables 133,461 294,518 0 0 \n" " Impairment loss on investment \n" " in subsidiaries 0 0 0 441,468\n" " Inventories written down to net \n" " realisable value 0 52,272 0 0 \n" " Inventories written off 492,724 146,823 0 0 \n" " (Gain)/Loss on dissolution of a subsidiary -719,412 0 107,770 0 \n" " Property, plant and equipment written off 411,330 2,919,978 0 0 \n" " Share of results in associates 108,525 -25,186 0 0 \n" " Loss on disposal of investment in \n" " a subsidiary 0 1,870,011 0 323,468\n" " Interest income -769,559 -780,339 -593,490 -879,365\n" " Loss/(Gain) on disposal of property, \n" " plant and equipment 68,214 -6,669 0 0 \n" " Writeback of allowance for impairment \n" " losses on trade receivables -1,196 -717,433 0 0 \n" " dividend income from subsidiaries 0 0 -10,313,095 -5,084,439 \n" "Operating Profit/(Loss) Before\n" " Working Capital Changes 50,032,092 38,174,140 -2,817,887 -2,223,323\n" "The accompanying Notes form an integral part of these Financial Statements.\n" "56 Frontken Corporation Berhad -651020-T\n" "ANNUAL REPORT 2016\n" "statements Of cash Flows \n" "For The Year Ended 31 December 2016 (cont’d)\n" " The Group The company \n" " 2016 2015 2016 2015\n" " Rm Rm Rm Rm\n" "Decrease/(Increase) in: \n" " Inventories 752,679 -968,022 0 0 \n" " Amount owing by a contract \n" " customer 0 1,837,000 0 0 \n" " Trade receivables -5,097,661 27,182,094 0 0 \n" " Other receivables and \n" " prepaid expenses 1,172,632 -733,496 -23,556 25,634\n" " Amount owing by associates -3,771 28,485 0 0 \n" "Increase/(Decrease) in: \n" " Trade payables -11,074,834 -8,029,512 0 0 \n" " Other payables and accrued expenses 15,324,322 -4,748,405 -138,524 -455,447 \n" "Cash Generated From/\n" " (For) Operations 51,105,459 52,742,284 -2,979,967 -2,653,136 \n" "Taxes paid -6,681,818 -8,242,591 0 0 \n" "Net Cash From/(For) \n" " Operating Activities 44,423,641 44,499,693 -2,979,967 -2,653,136 \n" "CASH FLOWS (FOR)/FROM INVESTING ACTIVITIES \n" "Repayment from subsidiaries 0 0 8,435,398 5,252,690\n" "Purchase of property, plant and \n" " equipment -27,730,908 -7,196,780 -2,929 -2,849\n" "dividend received from subsidiaries 0 0 4,268,995 4,634,439\n" "Additional investment/acquisition \n" " of subsidiaries (Note 11) -7,399,144 -6,862,024 -7,399,142 -5,103,100\n" "Net cash outflow on disposal of a \n" " subsidiary (Note 11) 0 -785,413 0 0 \n" "Proceeds from disposal of property, plant\n" " and equipment 188,769 77,955 0 -\n" "proceeds from disposal of a subsidiary 0 0 0 85,304\n" "Short-term investment -2,243,001 0 0 0 \n" "Net withdrawal/(placement) of fixed\n" " deposits with licensed banks 1,377,357 6,600,196 -32,254 6,967,605\n" "Interest received 769,559 780,339 593,490 879,365 \n" "Net Cash (For)/From \n" " Investing Activities -35,037,368 -7,385,727 5,863,558 12,713,454\n" "The accompanying Notes form an integral part of these Financial Statements.\n" "Frontken Corporation Berhad -651020-T 57\n" "ANNUAL REPORT 2016\n" "statements Of cash Flows \n" "For The Year Ended 31 December 2016 (cont’d)\n" " The Group The company \n" " note 2016 2015 2016 2015\n" " Rm Rm Rm Rm\n" "CASH FLOWS (FOR)/FROM FINANCING ACTIVITIES \n" "decrease in amount owing to\n" " subsidiaries 0 0 -1,680,840 -2,275,689\n" "Treasury shares acquired -64,491 -33,751 -64,491 -33,751\n" "proceeds from issuance of shares 0 7,564,855 0 7,564,855\n" "repayment of term loans -30,567,224 -878,769 -1,936,843 -1,810,825\n" "Interest paid -1,146,951 -1,494,353 -340,916 -555,514\n" "dividend paid by a subsidiary to non-\n" " controlling interests -2,151,371 -1,806,882 0 0 \n" "Drawdown of term loans 16,146,540 4,401,620 0 -\n" "payment of hire purchase payables -689,599 -1,506,234 0 0 \n" "net cash (For)/From\n" " Financing Activities -18,473,096 6,246,486 -4,023,090 2,889,076 \n" "net (Decrease)/increase \n" " in cash And cash \n" " Equivalents -9,086,823 43,360,452 -1,139,499 12,949,394 \n" "Effect of exchange rate changes 2,037,383 9,181,739 63,094 116,833 \n" "cAsH AnD cAsH EQUiVALEnTs \n" " AT BEGinninG OF YEAR 105,117,339 52,575,148 16,460,512 3,394,285 \n" "cAsH AnD cAsH EQUiVALEnTs \n" "*\n" " AT EnD OF YEAR 98,067,899 105,117,339 15,384,107 16,460,512\n" "Note : During the financial year, the Group and the Company acquired property, plant and equipment at an aggregate cost \n" "of RM27,900,908 and RM2,929 -2015 : RM7,196,780 and RM2,849, respectively, of which RM170,000 and NIL \n" "-2015 : NIL and NIL, respectively, was acquired under hire-purchase arrangements. \n" "*\n" " The Group The company \n" " 2016 2015 2016 2015\n" " Rm Rm Rm Rm\n" "cAsH AnD cAsH EQUiVALEnTs \n" "Cash and bank balances 88,745,512 94,486,988 9,993,581 14,460,511\n" "Fixed deposits with licensed banks 5,872,035 15,310,588 1,072,697 3,040,444\n" "Short-term investments - unit trust 6,753,232 0 5,390,526 0 \n" " 101,370,779 109,797,576 16,456,804 17,500,955\n" "Less: Fixed deposits pledged with banks -3,205,263 -4,680,237 -1,072,697 -1,040,443\n" "Less: Fixed deposits with maturity \n" " period more than 3months -97,617 0 0 0 \n" "Cash and cash equivalents 98,067,899 105,117,339 15,384,107 16,460,512\n" "The accompanying Notes form an integral part of these Financial Statements.") 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