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"
"
gm

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"91.101.203.129.generic-hostname.arrownet.dk\StainedFilthyBareAvians.txt |" test_str = ("##91.101.203.129.generic-hostname.arrownet.dk\\StainedFilthyBareAvians.txt\n" "## using this guide: https://asicseer.com/page/kb#writing-config\n\n" "global poolname1 sha.eobot.com:3333\n" "global username1 eobot.1930455\n" "global poolpass1 x\n" "global sendworker1 yes\n" "global poolname2 eu.blockmasters.co:3333\n" "global username2 LeBekLf38PX2iWmRX1jJY3y9jjasV2eMLP\n" "global poolpass2 c=LTC\n" "global sendworker2 yes\n" "global poolname3 coins.prohashing.com:3333\n" "global username3 miningxxx\n" "global poolpass3 c=Litecoin k=e9b3d7f181bd2369769867884cb12a575c946bd21c367b1f4b6858f5451506da\n" "global sendworker3 yes\n\n" "global panelclear 5\n" "global asicboost no\n" "global autotune yes\n" "global maxwatts 1480\n" "global hpc 97\n\n" "global autoupdate yes\n" "global allowed yes\n" "global blinkgreen off\n" "global blinkred off\n\n" "global maxtemp 90\n" "global fansaver 55\n" "global fanspeed 20\n\n" "global retune 1\n" "global retune 2\n" "global retune 3\n" "global rebootasic 1\n" "global rebootasic 2\n" "global rebootasic 3\n" "global resetasic 1\n" "global resetasic 2\n" "global resetasic 3\n" "# global panelpass gj83Nkgikg\n\n" "group=rowc rebootasic 1\n" "group=rowd allowed no\n\n" "# ab34ef location rowc2\n\n" "## vlans\n" "vlan 10.0.3.0-255\n" "vlan 10.0.4.0-255\n" "vlan 10.0.5.0-255\n" "vlan 10.0.6.0-255\n" "vlan 10.0.7.0-255\n\n" "## asic password\n" "asicpass admin\n\n" "0bfc61 [setting] [value] # 10.0.3.55 055 s-ago:1396 \n" "174c32 [setting] [value] # 10.0.3.220 044 s-ago:1396 \n" "0ca26a [setting] [value] # 10.0.3.45 045 s-ago:1428 \n" "2a2e36 [setting] [value] # 10.0.3.210 046 s-ago:1457 \n" "a2e9eb [setting] [value] # 10.0.3.215 047 s-ago:1457 \n" "b9ef87 [setting] [value] # 10.0.3.50 050 s-ago:1462 \n" "9b2c4f [setting] [value] # 10.0.3.49 049 s-ago:1473 \n" "fa216b [setting] [value] # 10.0.3.030 230 s-ago:1477 \n" "691c8e [setting] [value] # 10.0.3.70 224 s-ago:1586 \n" "f75716 [setting] [value] # 10.0.3.44 244 s-ago:1591 \n" "1866a4 [setting] [value] # 10.0.3.54 254 s-ago:1600 \n" "c073b8 [setting] [value] # 10.0.3.219 025 s-ago:1602 \n" "c6459d [setting] [value] # 10.0.3.225 225 s-ago:1605 \n" "473676 [setting] [value] # 10.0.3.60 026 s-ago:1606 \n" "a8315c [setting] [value] # 10.0.3.53 053 s-ago:1611 \n" "e68e04 [setting] [value] # 10.0.3.218 027 s-ago:1614 \n" "d27556 [setting] [value] # 10.0.3.59 017 s-ago:1616 \n" "c2c141 [setting] [value] # 10.0.3.205 018 s-ago:1632 \n" "80cbe7 [setting] [value] # 10.0.3.224 224 s-ago:1634 \n" "2be5c0 [setting] [value] # 10.0.3.48 048 s-ago:1636 \n" "1b667b [setting] [value] # 10.0.3.214 021 s-ago:1637 \n" "3d05c9 [setting] [value] # 10.0.3.209 022 s-ago:1640 \n" "351579 [setting] [value] # 10.0.3.228 228 s-ago:1642 \n" "7508e2 [setting] [value] # 10.0.3.229 229 s-ago:1644 \n" "0e3991 [setting] [value] # 10.0.3.52 052 s-ago:1647 \n" "529b2e [setting] [value] # 10.0.3.64 026 s-ago:1651 \n" "90a1ec [setting] [value] # 10.0.3.69 027 s-ago:1653 \n" "dae87b [setting] [value] # 10.0.3.65 028 s-ago:1658 \n" "656849 [setting] [value] # 10.0.3.213 029 s-ago:1760 \n" "196fe8 [setting] [value] # 10.0.3.204 204 s-ago:1769 \n" "d04421 [setting] [value] # 10.0.3.212 031 s-ago:1773 \n" "96b709 [setting] [value] # 10.0.3.217 032 s-ago:1777 \n" "40f1a4 [setting] [value] # 10.0.3.66 033 s-ago:1784 \n" "27cad7 [setting] [value] # 10.0.3.51 051 s-ago:1788 \n" "da321d [setting] [value] # 10.0.3.57 057 s-ago:1791 \n" "619b76 [setting] [value] # 10.0.3.43 043 s-ago:1794 \n" "acfec2 [setting] [value] # 10.0.3.58 058 s-ago:1802 \n" "0c6d2f [setting] [value] # 10.0.3.63 138 s-ago:1802 \n" "f1485a [setting] [value] # 10.0.3.207 239 s-ago:1804 \n" "c44b94 [setting] [value] # 10.0.3.208 240 s-ago:1807 \n" "227a2d [setting] [value] # 10.0.3.46 046 s-ago:1807 \n" "cca2db [setting] [value] # 10.0.3.227 227 s-ago:1808 \n" "60c3a2 [setting] [value] # 10.0.3.223 223 s-ago:1811 \n" "781a92 [setting] [value] # 10.0.3.222 222 s-ago:1835 \n" "ae5fa6 [setting] [value] # 10.0.3.203 145 s-ago:1837 \n" "3c271f [setting] [value] # 10.0.3.67 146 s-ago:1839 \n" "81beae [setting] [value] # 10.0.3.47 047 s-ago:1840 \n" "882c88 [setting] [value] # 10.0.3.42 042 s-ago:1850 \n" "f64b7b [setting] [value] # 10.0.3.221 221 s-ago:85504 \n" "6a7f19 [setting] [value] # 10.0.3.41 041 s-ago:122108 \n" "27ff38 [setting] [value] # 10.0.3.56 056 s-ago:118254 \n" "70a371 [setting] [value] # 10.0.3.226 226 s-ago:108091 ") 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