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

Code Generator

Language

Generated Code

import re regex = re.compile(r"(<!--a5-->)(.|\n)*(<!--5-->)", flags=re.MULTILINE) test_str = ("<!doctype html>\n" "<html>\n" " <head>\n" " <meta charset=\"utf-8\">\n" " <title>Sistema H |Produto, Odin</title>\n" " <link rel=\"stylesheet\" type=\"text/css\" href=\"tema.d/oficial.d/css/page.css\">\n" " <link rel=\"stylesheet\" type=\"text/css\" href=\"tema.d/oficial.d/css/menu.css\">\n" " <script type=\"text/javascript\">\n" " server = \"http://localhost/g2%20soft/ecomerce/\";\n" " </script>\n" " <script src=\"tema.d/oficial.d/js/wrequest.js\"></script>\n" " </head>\n" " <body lang=\"pt-br\">\n" " <nav id=\"menunav\">\n" " <header>\n" " <img src=\"tema.d/oficial.d/img/logo com fundo transparente.png\" alt=\"\">\n" "</header>\n" "<ul class=\"menu\">\n" " <li\n" " class=\"menufechado\"\n" " link=\"perfil\"\n" " submenu=\"true\"\n" " >\n" " <span onclick=\"menuOpen(this)\">+ FabricaA[Fabrica]</span>\n" " <ul class=\"submenu\">\n" " <li\n" " class=\"menufechado\"\n" " link=\"edit_perfil\"\n" " submenu=\"false\"\n" " >\n" " <span onclick=\"menuOpen(this)\">Perfil</span>\n\n" "</li>\n" "<li\n" " class=\"menufechado\"\n" " link=\"edit_perfil?a=sair\"\n" " submenu=\"false\"\n" " >\n" " <span onclick=\"menuOpen(this)\">Sair</span>\n\n" "</li>\n\n" "</ul>\n\n" "</li>\n" "<li\n" " class=\"menufechado\"\n" " link=\"list_meusprodutos\"\n" " submenu=\"true\"\n" " >\n" " <span onclick=\"menuOpen(this)\">+ Produtos</span>\n" " <ul class=\"submenu\">\n" " <li\n" " class=\"menufechado\"\n" " link=\"list_meusprodutos\"\n" " submenu=\"false\"\n" " >\n" " <span onclick=\"menuOpen(this)\">Meus Produtos</span>\n\n" "</li>\n" "<li\n" " class=\"menufechado\"\n" " link=\"add_produto\"\n" " submenu=\"false\"\n" " >\n" " <span onclick=\"menuOpen(this)\">Cadastrar Produto</span>\n\n" "</li>\n" "<li\n" " class=\"menufechado\"\n" " link=\"list_valortipo\"\n" " submenu=\"false\"\n" " >\n" " <span onclick=\"menuOpen(this)\">Tabelas de Preço</span>\n\n" "</li>\n\n" "</ul>\n\n" "</li>\n" "<li\n" " class=\"menufechado\"\n" " link=\"list_meusclientes\"\n" " submenu=\"true\"\n" " >\n" " <span onclick=\"menuOpen(this)\">+ Clientes</span>\n" " <ul class=\"submenu\">\n" " <li\n" " class=\"menufechado\"\n" " link=\"list_meusclientes\"\n" " submenu=\"false\"\n" " >\n" " <span onclick=\"menuOpen(this)\">Meus Clientes</span>\n\n" "</li>\n" "<li\n" " class=\"menufechado\"\n" " link=\"list_naoclientes\"\n" " submenu=\"false\"\n" " >\n" " <span onclick=\"menuOpen(this)\">Não Clientes</span>\n\n" "</li>\n\n" "</ul>\n\n" "</li>\n" "<li\n" " class=\"menufechado\"\n" " link=\"#\"\n" " submenu=\"true\"\n" " >\n" " <span onclick=\"menuOpen(this)\">+ Cadastro</span>\n" " <ul class=\"submenu\">\n" " <li\n" " class=\"menufechado\"\n" " link=\"add_produto\"\n" " submenu=\"false\"\n" " >\n" " <span onclick=\"menuOpen(this)\">Produto</span>\n\n" "</li>\n" "<li\n" " class=\"menufechado\"\n" " link=\"add_formadepagamento\"\n" " submenu=\"false\"\n" " >\n" " <span onclick=\"menuOpen(this)\">Forma de pagamento</span>\n\n" "</li>\n" "<li\n" " class=\"menufechado\"\n" " link=\"add_prasodeentrega\"\n" " submenu=\"false\"\n" " >\n" " <span onclick=\"menuOpen(this)\">Praso de pagamento</span>\n\n" "</li>\n\n" "</ul>\n\n" "</li>\n" "<li\n" " class=\"menufechado\"\n" " link=\"list_pedidosfabrica\"\n" " submenu=\"false\"\n" " >\n" " <span onclick=\"menuOpen(this)\">Pedidos</span>\n\n" "</li>\n" "<li\n" " class=\"menufechado\"\n" " link=\"mensagens\"\n" " submenu=\"false\"\n" " >\n" " <span onclick=\"menuOpen(this)\">Mensagens</span>\n\n" "</li>\n" "<li\n" " class=\"menufechado\"\n" " link=\"\"\n" " submenu=\"true\"\n" " >\n" " <span onclick=\"menuOpen(this)\">+ Relatorios</span>\n" " <ul class=\"submenu\">\n" " <li\n" " class=\"menufechado\"\n" " link=\"rela_produtosvendidos\"\n" " submenu=\"false\"\n" " >\n" " <span onclick=\"menuOpen(this)\">Produtos Vendidos</span>\n\n" "</li>\n" "<li\n" " class=\"menufechado\"\n" " link=\"rela_produtoscadastrados\"\n" " submenu=\"false\"\n" " >\n" " <span onclick=\"menuOpen(this)\">Produtos Cadastrados</span>\n\n" "</li>\n" "<li\n" " class=\"menufechado\"\n" " link=\"rela_clientescadastrados\"\n" " submenu=\"false\"\n" " >\n" " <span onclick=\"menuOpen(this)\">Clientes Cadastrados</span>\n\n" "</li>\n\n" "</ul>\n\n" "</li>\n" "<li\n" " class=\"menufechado\"\n" " link=\"\"\n" " submenu=\"false\"\n" " >\n" " <span onclick=\"menuOpen(this)\">Lançamentos</span>\n\n" "</li>\n\n" "</ul>\n\n" " </nav>\n" " <content>\n" " <h1>Produto, Odin</h1>\n" " <link rel=\"stylesheet\" href=\"tema.d/oficial.d/css/view_produto.css\">\n" "<div class=\"page_listabas\">\n" " <!--a5-->\n" " <div class=\"page_abalabel \" onclick=\"link('list_loja')\">Loja</div>\n" " <!--5-->\n" " <div class=\"page_abalabel page_abalabel_opened\">Ver</div>\n" " <!--a6-->\n" " <div class=\"page_abalabel\" onclick=\"link('edit_produto?id=52')\">Detalhes</div>\n" " <div class=\"page_abalabel\" onclick=\"link('edit_produtomidia?id=52')\">Midias</div>\n" " <!--6-->\n" "</div>\n" "<div class=\"page_aba\">\n" " <div id=\"referencia\">Odin</div>\n" " <div class=\"midias\">\n" " <div class=\"midia_view\">\n" " <img src=\"anexo\\97\" alt=\"midia0\" id=\"midia_view_img\">\n" " </div>\n" " <div class=\"midias_left\">\n" " <span> <img src=\"tema.d/oficial.d/img/midiasview_arrow_left.svg\" alt=\"\"> </span>\n" " </div>\n" " <div class=\"midias_right\">\n" " <span> <img src=\"tema.d/oficial.d/img/midiasview_arrow_right.svg\" alt=\"\"> </span>\n" " </div>\n" " <div class=\"midia_list\"><div class=\"\">\n" " <img src=\"anexo/97\" alt=\"\" onclick=\"setMidia(this)\">\n" "</div>\n" "<div class=\"\">\n" " <img src=\"anexo/98\" alt=\"\" onclick=\"setMidia(this)\">\n" "</div>\n" "</div>\n" " </div>\n" " <div class=\"detalhes\">\n" " <p>Odim, tambem conhecido como pai de todos.</p>\n" " <p>\n" " 2cx por <valor>R$ 0,00</valor>\n" " </p>\n" " <p>[52]Hidralica Industrial/Eletrica</p>\n" " </div>\n" " <div class=\"formasdepagamento\">\n" " <p>Podendo ser pago:</p>\n" " {{formas de pagamento}}\n" " </div>\n" " <div class=\"outrosprodutos\">\n" " <div class=\"produto\">\n" " <img src=\"anexo/0\" alt=\"\">\n" " </div>\n" " {{outrosprodutos}}\n" " </div>\n" "</div>\n" "<script type=\"text/javascript\" src=\"tema.d/oficial.d/js/view_produto.js\"></script>\n\n" " <footer>G2</footer>\n" " </content>\n" " <div class=\"menu-button\" onclick=\"menuShow()\">&equiv;</div>\n" " <div class=\"flutuante\" id=\"flutuante\">Loading...</div>\n" " <div class=\"msgbox_fundo\" id=\"msgbox_fundo\" onclick=\"MSGbox.close()\">\n" " <div class=\"msgbox_box\">\n" " <span class=\"button msgbox_close\" onclick=\"MSGbox.close()\">X</span>\n\n" " <div class=\"msgbox_conteudo\" id=\"msgbox_conteudo\">\n" " </div>\n" " </div>\n" " </div>\n" " <script type=\"text/javascript\" src=\"tema.d/oficial.d/js/page.js\"></script>\n" " <script type=\"text/javascript\" src=\"tema.d/oficial.d/js/menu.js\"></script>\n" " </body>\n" "</html>") 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