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

/
/
igm

Test String

Code Generator

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Generated Code

# coding=utf8 # the above tag defines encoding for this document and is for Python 2.x compatibility import re regex = r"^FB\-(.*) Facebook tüm arkadaşlarınızla" test_str = ("--b1_7c33580701799b858d1ab7d78f876b33\n" "Content-Type: text/plain; charset=\"UTF-8\"\n" "Content-Transfer-Encoding: quoted-printable\n\n" "========================================\n" "Hesabınızı Onaylayın\n" "https://www.facebook.com/n/?confirmemail.php&e=ezgiaktas65523%40yandex.com&c=90430&cuid=AYg8uAvR_v-5IscpmGkQTZhaG1EPhI8Y5GtW1JV-yZuIAOk-NiUOuXy07pvpNCqTzaXAB0dPssMGkOyM1NXVnfKGZ8D62Y_14iBmqh_Gb3EX0VrFwlm3vb6IjP5b13QKlwY&aref=1642527518851633&medium=email&mid=5d5de73b57f5fG5b050c997118G5d5debd4b8231G3c2&n_m=ezgiaktas65523%40yandex.com\n\n" "========================================\n\n" "Merhaba Ezgi,\n\n" "Merhaba Ezgi,\n\n" "Yakın zamanda Facebook'a kaydoldunuz. Facebook kaydınızı tamamlamak için lütfen hesabınızı onaylayın.\n\n" "Teşekkürler,\n" "Facebook ekibi\n\n" "Şu onay kodunu girmeniz istenebilir:\n\n" "FB-90430\n\n" "Facebook tüm arkadaşlarınızla iletişim kurmanıza ve iletişimde kalmanıza yardımcı olur. Facebook'a katıldıktan sonra fotoğraflar paylaşabilir, etkinlikler planlayabilir ve daha fazlasını yapabilirsiniz.\n\n" "========================================\n" "İsteğiniz üzerine bu mesaj ezgiaktas65523@yandex.com adresine gönderilmiştir.\n" "Meta Platforms, Inc., Attention: Community Support, 1 Facebook Way, Menlo Park, CA 94025\n" "Hesabınızı güvende tutabilmek için lütfen bu e-postayı iletmeyin. Daha fazla bilgi almak için aşağıdaki bağlantıya tıklayın.\n" "https://www.facebook.com/email_forward_notice/?mid=5d5de73b57f5fG5b050c997118G5d5debd4b8231G3c2\n\n\n" "--b1_7c33580701799b858d1ab7d78f876b33\n" "Content-Type: text/html; charset=\"UTF-8\"\n" "Content-Transfer-Encoding: quoted-printable\n\n" "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional //EN\"><html><head><title>Facebook</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" /><style nonce=\"O2FMxb3p\">@media all and (max-width: 480px){*[class].ib_t{min-width:100% !important}*[class].ib_row{display:block !important}*[class].ib_ext{display:block !important;padding:10px 0 5px 0;vertical-align:top !important;width:100% !important}*[class].ib_img,*[class].ib_mid{vertical-align:top !important}*[class].mb_blk{display:block !important;padding-bottom:10px;width:100% !important}*[class].mb_hide{display:none !important}*[class].mb_inl{display:inline !important}*[class].d_mb_flex{display:block !important}}.d_mb_show{display:none}.d_mb_flex{display:flex}@media only screen and (max-device-width: 480px){.d_mb_hide{display:none !important}.d_mb_show{display:block !important}.d_mb_flex{display:block !important}}.mb_text h1,.mb_text h2,.mb_text h3,.mb_text h4,.mb_text h5,.mb_text h6{line-height:normal}.mb_work_text h1{font-size:18px;line-height:normal;margin-top:4px}.mb_work_text h2,.mb_work_text h3{font-size:16px;line-height:normal;margin-top:4px}.mb_work_text h4,.mb_work_text h5,.mb_work_text h6{font-size:14px;line-height:normal}.mb_work_text a{color:#1270e9}.mb_work_text p{margin-top:4px}</style></head><body style=\"margin:0;padding:0;\" dir=\"ltr\" bgcolor=\"#ffffff\"><table border=\"0\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\" id=\"email_table\" style=\"border-collapse:collapse;\"><tr><td id=\"email_content\" style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;background:#ffffff;\"><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" style=\"border-collapse:collapse;\"><tr style=\"\"><td height=\"20\" style=\"line-height:20px;\" colspan=\"3\">&nbsp;</td></tr><tr><td height=\"1\" colspan=\"3\" style=\"line-height:1px;\"><span style=\"color:#FFFFFF;font-size:1px;opacity:0;\"> Merhaba Ezgi, Yakın zamanda Facebook&#039;a kaydoldunuz. Facebook kaydınızı tamamlamak için lütfen hesabınızı onaylayın. </span></td></tr><tr><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td><td style=\"\"><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" style=\"border-collapse:collapse;\"><tr style=\"\"><td height=\"15\" style=\"line-height:15px;\" colspan=\"3\">&nbsp;</td></tr><tr><td width=\"32\" align=\"left\" valign=\"middle\" style=\"height:32;line-height:0px;\"><a href=\"https://www.facebook.com/n/?confirmemail.php&amp;e=ezgiaktas65523%40yandex.com&amp;c=90430&amp;cuid=AYi4LuOy_ckOKC3zv727NlHC4n3RHSVRSuELgJFpM3cd5wOLDrjkgOLoFHhhX2kHE6Ja11nj2zM8ZY_lyF3vj5YimJpGk0OmQUxoHDrzg7rm8jLHpHoIVIsYgxeuDEOPiPo&amp;aref=1642527518851633&amp;medium=email&amp;mid=5d5de73b57f5fG5b050c997118G5d5debd4b8231G3c2&amp;n_m=ezgiaktas65523%40yandex.com\" style=\"color:#3b5998;text-decoration:none;\"><img src=\"https://static.xx.fbcdn.net/rsrc.php/v3/yP/r/nblMrq1jYuK.png\" width=\"32\" height=\"32\" style=\"border:0;\" /></a></td><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td><td width=\"100%\" style=\"\"><a href=\"https://www.facebook.com/n/?confirmemail.php&amp;e=ezgiaktas65523%40yandex.com&amp;c=90430&amp;cuid=AYi4LuOy_ckOKC3zv727NlHC4n3RHSVRSuELgJFpM3cd5wOLDrjkgOLoFHhhX2kHE6Ja11nj2zM8ZY_lyF3vj5YimJpGk0OmQUxoHDrzg7rm8jLHpHoIVIsYgxeuDEOPiPo&amp;aref=1642527518851633&amp;medium=email&amp;mid=5d5de73b57f5fG5b050c997118G5d5debd4b8231G3c2&amp;n_m=ezgiaktas65523%40yandex.com\" style=\"color:#3b5998;text-decoration:none;font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:19px;line-height:32px;\">İşlem Gerekiyor: Facebook Hesabınızı Onaylayın</a></td></tr><tr style=\"border-bottom:solid 1px #e5e5e5;\"><td height=\"15\" style=\"line-height:15px;\" colspan=\"3\">&nbsp;</td></tr></table></td><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td></tr><tr><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td><td style=\"\"><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" style=\"border-collapse:collapse;\"><tr style=\"\"><td height=\"28\" style=\"line-height:28px;\">&nbsp;</td></tr><tr><td style=\"\"><span class=\"mb_text\" style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:16px;line-height:21px;color:#141823;\">Merhaba Ezgi,</span></td></tr><tr style=\"\"><td height=\"28\" style=\"line-height:28px;\">&nbsp;</td></tr><tr><td style=\"\"><span class=\"mb_text\" style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:16px;line-height:21px;color:#141823;\">Yakın zamanda Facebook&#039;a kaydoldunuz. Facebook kaydınızı tamamlamak için lütfen hesabınızı onaylayın.</span></td></tr><tr style=\"\"><td height=\"28\" style=\"line-height:28px;\">&nbsp;</td></tr></table></td><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td></tr><tr><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td><td style=\"\"><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" style=\"border-collapse:collapse;\"><tr style=\"\"><td height=\"2\" style=\"line-height:2px;\" colspan=\"3\">&nbsp;</td></tr><tr><td class=\"mb_blk\" style=\"\"><a href=\"https://www.facebook.com/n/?confirmemail.php&amp;e=ezgiaktas65523%40yandex.com&amp;c=90430&amp;cuid=AYg0xJuCFwQ3yz6hC7VX8E7ZbfHFvrpgsPhC-qSCK0HaZRGZY0HTI4G9Uj1E2_nHluClUBZVVrcjQkSl7aOi6kP6HnTXI2WZa81c0HcbtpCg5S2UcHQp8EctLRGt0D-56tg&amp;aref=1642527518851633&amp;medium=email&amp;mid=5d5de73b57f5fG5b050c997118G5d5debd4b8231G3c2&amp;n_m=ezgiaktas65523%40yandex.com\" style=\"color:#3b5998;text-decoration:none;\"><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" style=\"border-collapse:collapse;\"><tr><td style=\"border-collapse:collapse;border-radius:2px;text-align:center;display:block;border:solid 1px #344c80;box-shadow:inset 0 1px 1px rgba(255, 255, 255, 0.1),0 1px 0 rgba(0, 0, 0, 0.1);background:#4c649b;padding:7px 16px 11px 16px;\"><a href=\"https://www.facebook.com/n/?confirmemail.php&amp;e=ezgiaktas65523%40yandex.com&amp;c=90430&amp;cuid=AYg0xJuCFwQ3yz6hC7VX8E7ZbfHFvrpgsPhC-qSCK0HaZRGZY0HTI4G9Uj1E2_nHluClUBZVVrcjQkSl7aOi6kP6HnTXI2WZa81c0HcbtpCg5S2UcHQp8EctLRGt0D-56tg&amp;aref=1642527518851633&amp;medium=email&amp;mid=5d5de73b57f5fG5b050c997118G5d5debd4b8231G3c2&amp;n_m=ezgiaktas65523%40yandex.com\" style=\"color:#3b5998;text-decoration:none;display:block;\"><center><font size=\"3\"><span style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;white-space:nowrap;font-weight:bold;vertical-align:middle;color:#ffffff;text-shadow:0 -1px 0 #415686;font-size:14px;line-height:14px;\">Hesabınızı&nbsp;Onaylayın</span></font></center></a></td></tr></table></a></td><td width=\"100%\" class=\"mb_hide\" style=\"\"></td></tr><tr style=\"\"><td height=\"32\" style=\"line-height:32px;\" colspan=\"3\">&nbsp;</td></tr></table></td><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td></tr><tr><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td><td style=\"\"><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" style=\"border-collapse:collapse;\"><tr><td style=\"\"><span class=\"mb_text\" style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:16px;line-height:21px;color:#141823;\">Şu onay kodunu girmeniz istenebilir:</span></td></tr><tr style=\"\"><td height=\"14\" style=\"line-height:14px;\">&nbsp;</td></tr><tr><td style=\"\"><span class=\"mb_text\" style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:16px;line-height:21px;color:#141823;\"><center><table border=\"0\" cellspacing=\"0\" cellpadding=\"0\" style=\"border-collapse:collapse;\"><tr><td style=\"font-size:11px;font-family:LucidaGrande,tahoma,verdana,arial,sans-serif;padding:10px;background-color:#f2f2f2;border-left:1px solid #ccc;border-right:1px solid #ccc;border-top:1px solid #ccc;border-bottom:1px solid #ccc;\">FB-90430</td></tr></table></center></span></td></tr><tr style=\"\"><td height=\"14\" style=\"line-height:14px;\">&nbsp;</td></tr><tr><td style=\"\"><span class=\"mb_text\" style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:14px;line-height:19px;color:#898f9c;\">Facebook tüm arkadaşlarınızla iletişim kurmanıza ve iletişimde kalmanıza yardımcı olur. Facebook&#039;a katıldıktan sonra fotoğraflar paylaşabilir, etkinlikler planlayabilir ve daha fazlasını yapabilirsiniz.</span></td></tr><tr style=\"\"><td height=\"14\" style=\"line-height:14px;\">&nbsp;</td></tr></table></td><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td></tr><tr><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td><td style=\"\"><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" align=\"left\" style=\"border-collapse:collapse;\"><tr style=\"border-top:solid 1px #e5e5e5;\"><td height=\"19\" style=\"line-height:19px;\">&nbsp;</td></tr><tr><td style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:11px;color:#aaaaaa;line-height:16px;\">İsteğiniz üzerine bu mesaj <a href=\"mailto:ezgiaktas65523&#064;yandex.com\" style=\"color:#3b5998;text-decoration:none;\">ezgiaktas65523&#064;yandex.com</a> adresine gönderilmiştir.<br />Meta Platforms, Inc., Attention: Community Support, 1 Facebook Way, Menlo Park, CA 94025</td></tr></table></td><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td></tr><tr><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td><td style=\"\"><table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" style=\"border-collapse:collapse;\"><tr><td style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:11px;color:#aaaaaa;line-height:16px;\"><span class=\"mb_text\" style=\"font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:16px;line-height:21px;color:#141823;;font-family:Helvetica Neue,Helvetica,Lucida Grande,tahoma,verdana,arial,sans-serif;font-size:11px;color:#aaaaaa;line-height:16px;\">Hesabınızı güvende tutabilmek için lütfen bu e-postayı iletmeyin. <a style=\"color:#3b5998;text-decoration:none;\" href=\"https://www.facebook.com/email_forward_notice/?mid=5d5de73b57f5fG5b050c997118G5d5debd4b8231G3c2\">Daha Fazla Bilgi Alın</a></span></td></tr></table></td><td width=\"15\" style=\"display:block;width:15px;\">&nbsp;&nbsp;&nbsp;</td></tr><tr style=\"\"><td height=\"20\" style=\"line-height:20px;\" colspan=\"3\">&nbsp;</td></tr></table><span style=\"\"><img src=\"https://www.facebook.com/email_open_log_pic.php?cn=DHOpBllDo3&amp;mid=5d5de73b57f5fG5b050c997118G5d5debd4b8231G3c2\" style=\"border:0;width:1px;height:1px;\" /></span></td></tr></table></body></html>\n\n\n\n" "--b1_7c33580701799b858d1ab7d78f876b33--") matches = re.finditer(regex, test_str, re.IGNORECASE | 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