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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

Code Generator

Language

Generated Code

import re regex = re.compile(r"Zweckfreibaum", flags=re.MULTILINE) test_str = ("//************* Russel **************\n\n" "//++++++++++++ App.jsx ++++++++++++++\n\n" "import React from \"react\";\n" "import { DragonList } from \"./DragonList\";\n" "import dragons from './dragons';\n\n" "export default function App() {7\n\n" " const [minAge, setMinAge] = React.useState(17);\n" " const [type, setType] = React.useState('All');\n" " console.log(dragons);\n" " return (\n" " <div>\n" " <h1>The Dragons:</h1>\n" " <DragonList dragons={dragons} minAge={minAge} type={type}/>\n" " <span>Minimum Age: {minAge}</span>\n" " <button type=\"button\" onClick={ () => setMinAge(age => age - 1) }>\n" " Show younger dragons\n" " </button>\n" " <button type=\"button\" onClick={ () => setMinAge(age => age + 1) }>\n" " Show older dragons\n" " </button>\n" " <button type=\"button\" onClick={ () => setType('All') }>\n" " Show all dragons\n" " </button>\n" " <button type=\"button\" onClick={ () => setType('Fire') }>\n" " Show fire dragons\n" " </button>\n" " </div>\n" " )\n" "}\n\n" "//++++++++++++++ Main.jsx ++++++++++++++++++\n\n" "import { StrictMode } from 'react'\n" "import { createRoot } from 'react-dom/client'\n" "import './index.css'\n" "import GiggnGoggn from './App.jsx'\n\n" "createRoot(document.getElementById('root')).render(\n" " <StrictMode>\n" " <GiggnGoggn />\n" " </StrictMode>,\n" ")\n\n" "//++++++++++++++ dragon.js++++++++++++++\n\n" "export default dragons = [\n" " {\n" " name: \"Skril\",\n" " type: \"Lightning\",\n" " age: 16,\n" " },\n\n" " {\n" " name: \"Nightmare\",\n" " type: \"Fire\",\n" " age: 22,\n" " },\n\n" " {\n" " name: \"Deadly Nadder\",\n" " type: \"Magnesium\",\n" " age: 16,\n" " },\n\n" " {\n" " name:\"Night Fury\",\n" " type: \"Plasma\",\n" " age: 18,\n" " },\n\n" "]; \n\n\n" "//++++++++++++++++++++++ DragonList.jsx+++++++++++++++++++\n\n" "import { Dragon } from \"./Dragon\";\n\n" "export function DragonList({dragons, minAge, type}) {\n\n" " const filteredDragons = dragons.filter(\n" " dragon => (dragon.age >= minAge) && (type === 'All' ? true : dragon.type === type)\n" " );\n\n" " console.log('filteredDragons', {filteredDragons});\n\n" " return (\n" " <div>\n" " {filteredDragons.map((dragon, index) => <Dragon key={index} {...dragon} /> )}\n" " </div>\n" " );\n" "}\n\n" "//++++++++++++++++++ dragon.jsx +++++++++++++++++++++++++\n\n" "export function Dragon({ name, type, age }) {\n" " return (\n" " <div>\n" " <h2>{name}</h2>\n" " <p>Type: {type}</p>\n" " <p>Age: {age} years</p>\n" " </div>\n" " );\n" "}\n\n\n\n\n") matches = regex.finditer(test_str) for match_num, match in enumerate(matches, start=1): print(f"Match {match_num} was found at {match.start()}-{match.end()}: {match.group()}") for group_num, group in enumerate(match.groups(), start=1): print(f"Group {group_num} found at {match.start(group_num)}-{match.end(group_num)}: {group}")

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