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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]
  • Character class intersection
    [\w&&[^\d]]
  • 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"getObj\(\"Frm_Logintoken\"\).value = \"(.*)\";") test_str = ("\n" "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\"><html xmlns=\"http://www.w3.org/1999/xhtml\">\n" "<head>\n" "<META HTTP-EQUIV=\"pragma\" CONTENT=\"no-cache\">\n" "<META HTTP-EQUIV=\"Cache-Control\" CONTENT=\"no-cache, must-revalidate\">\n" "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=iso-8859-1\" />\n" "<title>&#90;&#88;&#72;&#78;&#32;&#72;&#49;&#48;&#56;&#78;&#32;&#86;&#50;&#46;&#53;</title>\n" "<LINK REL=\"stylesheet\" HREF=\"css/login.css\" TYPE=\"text/css\" />\n" "<LINK REL=\"stylesheet\" HREF=\"css/styleen.css\" TYPE=\"text/css\" />\n" "<script>\n\n" "function getObj(id)\n" "{\n" "return(document.getElementById(id));\n" "}\n" "var SetTFlag = 0;\n" "var maxtime;\n" "var interval;\n" "function setTime()\n" "{\n" "if(window.name>=60 || window.name<0 || window.name==\"\")\n" "{\n" "maxtime = Math.min(60, 0 + 60 - 218143);\n" "}\n" "else\n" "{\n" "maxtime = window.name;\n" "}\n" "if(maxtime>=0)\n" "{\n" "seconds = maxtime;\n" "getObj(\"time\").innerHTML=seconds+\" secs\";\n" "if (maxtime == 0)\n" "{\n" "setDisable();\n" "SetTFlag =0;\n" "window.name=\"\";\n" "if(interval)\n" "{\n" "clearInterval(interval);\n" "interval = 0;\n" "}\n" "}\n" "else\n" "{\n" "--maxtime;\n" "SetTFlag = 1;\n" "window.name = maxtime;\n" "}\n" "}\n" "}\n" "function setinner(type)\n" "{\n" "if (SetTFlag ==0)\n" "{\n" "getObj(\"myLayer\").style.visibility = type ;\n" "}\n" "}\n" "function Transfer_meaning(id,value)\n" "{\n" "getObj(id).value=value;\n" "}\n" "function ChangeLang()\n" "{\n" "var lang = \"English\";\n" "getObj(\"_lang\").disabled = false;\n" "getObj(\"Frm_Username\").disabled = true;\n" "getObj(\"Frm_Password\").disabled = true;\n" "if(true != getObj(\"TestLang01\").disabled)\n" "{\n" "if (\"English\" == lang)\n" "{\n" "getObj(\"_lang\").value = \"Chinese\";\n" "}\n" "else if (\"Chinese\" == lang)\n" "{\n" "getObj(\"_lang\").value = \"English\";\n" "}\n" "getObj(\"action\").value = \"setlang\";\n" "getObj(\"Frm_Username\").disabled = true;\n" "getObj(\"Frm_Password\").disabled = true;\n" "getObj(\"LoginId\").disabled = true;\n" "document.fLogin.submit();\n" "}\n" "}\n" "</script>\n" "</head>\n\n" "<body>\n" "<div id=\"container\">\n" "<div id=\"myLayer\" onmousedown=\"setinner('hidden')\" style=\"position:absolute; width:185px; height:91px; z-index:9; right: 50px; top: 140px; background: url(img/pop_up.gif) no-repeat; border: 1px none #000000; visibility: hidden;\">\n" "<div id=\"Layer1\" style=\"position:absolute; width:180px; height:45px; z-index:10; left: 2px; top: 28px;\">\n" "<table width=\"183\" border=\"0\">\n" "<tr>\n" "<td width=\"183\">&nbsp;&nbsp;<font id=\"errmsg\" class=\"notecontent\" ></font><span id=\"time\" style=\"color:red;display:none;\"></span></td>\n" "</tr>\n" "</table>\n" "</div>\n" "<div id=\"Layer3\" style=\"position:absolute; width:140px; height:10px; z-index:11; left: 34px; top: 9px; font-size: 8pt;\">\n" "<font class=\"note\" id=\"errnote\">&nbsp;Error</font>\n" "</div>\n" "</div>\n" "<!--head²¿·Ö¿ªÊ¼-->\n" "<div id=\"head\">\n" "<div class=\"type\"><font id=\"\">&#90;&#88;&#72;&#78;&#32;&#72;&#49;&#48;&#56;&#78;&#32;&#86;&#50;&#46;&#53;</font></div>\n" "<div id=\"banner\" style=\"background-image:url(img/banner.gif); background-repeat:no-repeat\"></div>\n" "</div>\n" "<!--head²¿·Ö½áÊø-->\n" "<!--content²¿·Ö¿ªÊ¼-->\n" "<div id=\"loginArea\">\n" "<form name=\"fLogin\" id=\"fLogin\" method=\"post\" onsubmit=\"return false;\" action=\"\">\n" "<input type=\"hidden\" name=\"_lang\" id=\"_lang\" value=\"\" disabled>\n" "<input type=\"hidden\" name=\"frashnum\" id=\"frashnum\" value=\"\">\n" "<input type=\"hidden\" name=\"action\" id=\"action\" value=\"login\">\n" "<input type=\"hidden\" name=\"Frm_Logintoken\" id=\"Frm_Logintoken\" value=\"\">\n" "<!--ÄÚÈÝ¿ªÊ¼-->\n" "<div class=\"login_frame\">\n" "<ul class=\"login_title\">\n" "<li class=\"login_title_left\"></li>\n" "<li class=\"login_title_center\">Please login to continue...</li>\n\n" "<li class=\"login_title_right\"></li>\n" "</ul>\n" "<div class=\"content login_content\">\n" "<ul class=\"login_blank\"></ul>\n" "<ul class=\"login_ul_1\">\n" "<li class=\"login_li_1\"><span>Username</span></li>\n" "<li class=\"login_li_2\">\n" "<input type=\"text\" class=\"username\" name=\"Username\" id=\"Frm_Username\">\n" "</li>\n" "</ul>\n" "<ul class=\"login_blank\"></ul>\n" "<ul class=\"login_ul_1\">\n" "<li class=\"login_li_1\"><span>Password</span></li>\n" "<li class=\"login_li_2\">\n" "<input type=\"password\" class=\"password\" name=\"Password\" id=\"Frm_Password\">\n" "</li>\n" "<li class=\"login_li_3\">\n" "<input class=\"login\" type=\"submit\" id=\"LoginId\" value=\"Login\" onclick=\"dosubmit()\">\n" "</li>\n" "</ul>\n" "</div>\n" "</div>\n" "<!--ÄÚÈݽáÊø-->\n" "</form>\n" "</div>\n" "<!--bottom²¿·Ö¿ªÊ¼-->\n\n" "<div style=\"font-family: Arial;font-size: 12px;text-align:center;\"> &copy; 2008-2015 ZTE Corporation. All rights reserved </div>\n\n" "<div class=\"bottom_line\"></div>\n" "<div id=\"bottomx\"></div>\n" "<!--bottom²¿·Ö½áÊø-->\n" "</div>\n" "</body>\n" "</html>\n" "<script>\n\n" "window.name=\"\";\n\n" "function SetDisabled()\n" "{\n" "getObj(\"errmsg\").innerHTML = \"You have input the wrong username or password for three times. Please try again a minute later.\";\n" "getObj(\"Frm_Username\").disabled = true;\n" "getObj(\"Frm_Password\").disabled = true;\n" "getObj(\"LoginId\").disabled = true;\n\n" "getObj(\"myLayer\").style.visibility = \"visible\" ;\n" "getObj(\"time\").style.display = \"\" ;\n" "interval = setInterval(\"setTime()\",1000);\n" "}\n" "function setDisable()\n" "{\n" "if (SetTFlag == 1)\n" "{\n" "getObj(\"Frm_Username\").disabled = false;\n" "getObj(\"Frm_Password\").disabled = false;\n" "getObj(\"LoginId\").disabled = false;\n\n" "getObj(\"time\").style.display = \"none\";\n" "getObj(\"myLayer\").style.visibility = \"hidden\";\n" "}\n" "}\n" "function dosubmit()\n" "{\n" "if (getObj(\"Frm_Username\").value == \"\")\n" "{\n" "getObj(\"errmsg\").innerHTML = \"Username cannot be empty.\";\n" "getObj(\"myLayer\").style.visibility = \"visible\" ;\n" "return;\n" "}\n" "else\n" "{\n" "getObj(\"LoginId\").disabled = true;\n" "getObj(\"Frm_Logintoken\").value = \"7\";\n" "document.fLogin.submit();\n" "}\n" "}\n" "</script>\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