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

Substitution
Processing...

Code Generator

Language

Generated Code

import re regex = re.compile(r"^(PANEL\s+\S+)(.*?)(?=PANEL|\Z)", flags=re.MULTILINE | re.DOTALL) test_str = ("PANEL NORMAL\n" "Diana and Gahriel run away with all their might. The monster is raging right behind them\n\n" " Gharial (whisper)\n" " Don’t turn back!\n\n" " Diana (confused)\n" " What--\n" " \n" "PANEL LEFT\n\n" "Gahriel signal diane to be quiet\n\n" " Gharial (put his hand to his mouth signal quiet)\n" " Shh….\n\n" "PANEL FOCUS\n\n" "The monster is running toward them quickly , right behind them\n\n" "PANEL FULL\n\n" "Diana is afraid for her own life. Her eyes wide open as the monster breathes through her.\n\n" " Diana (holding her mouth with her hand)\n" " Gasp\n\n" "PANEL RIGHT\n" " Gahriel (whisper)\n" " Everything will be okay!\n\n" "PANEL CENTER\n" "They both stand quietly, not a single noise.,\n\n" "PANEL SMALL\n" "A sudden noise\n" "Crack\n\n" "PANEL RIGHT\n" "The monster caught Diana and bit her head off. Gahriel in shock-terror, he can’t move.\n\n") subst = "<div class=\"$1\">$2</div>" result = regex.sub(subst, test_str) if result: print(result)

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