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

/
/
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"(.*\d{5,}.*)|(^(\,|\.|\\|\'|\-|\?|\*|\(|\@|\^|\=|\/|\%|\").*)|(.*(\<|\>|\[|\]|\;).*)|(.*(\.html|\.php).*)|^(\d\.\d)|(^\\.*)|(^\%.*\%)|(\d{1,3}(((x|\.|\.[[:space:]]){1,2})|[[:space:]])\d{1,3})|.*x$|^0[a-z]*|.{50,}" test_str = ("<script>alert('hai');</script>\n" "0.8 \n" "003902\n" ",eja kerja\n" ".akeup\n" "081320266690\n" "1 set meja kursi\n" "0elan\n" "meja makan\n" "100 meja\n" "12 cm\n" "10023995\n" "]\n" "\"abcd\"\n" "\\yj magnolia\n" "%m087%\n" "'t. shower set kris prem rev wht ptss-0211-5w \n" "-tangga/kamar-mandi/1kvigy-jual-title-deck-karpet-anti-licin-bath-mat-anti-slip\n" "? sarapan✅ lunch crew✅ snack crew✅ video on process undangan ? roundown ✅ backdrops✅ photo booth✅ documentation ✅ rooms hotel ? catering ? panggung ? opening speech ? flag dance ✅ door prizes? seragam ? cue card ?. d . ,\n" "?meja?\n" "'merlott mylo set meja makan\n" "*\"tangga\"*\n" "@meja\n" "(u/6)\n" "*晶杯子\n" "/*meja*/\n" "/%meja\n" "====\n" "^meja^\n" "14 pcs radiator cup tester ( top quality ) alat tes kebocoran radiator \n" "120x200x35 cm jty202 ubah lokasi produk hanya bisa di ambil di lippo plaza kupang (informa) verified brand linotela dikirim oleh ruparupa detail produk\n" "640 × 640gambar mungkin memiliki hak cipta. pelajari lebih lanjut kuncibengkel\n" "%meja\n" "%mp18.html\n" "100x\n" "25x25\n" "250x250\n" "123. 456\n" "123.456\n" "123 456") 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