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

/
/
g

Test String

Code Generator

Language

Generated Code

# coding=utf8 # the above tag defines encoding for this document and is for Python 2.x compatibility import re regex = r"<(span).*?class=\"\s*(?:.*\s)?target(?:\s[^\"]+)?\s*\"[^\>]*>(.*)<\/\1>" test_str = "<p><img src=\\\"https://files.colektia.com/company_logos/1900910.png\\\"></p><p><br></p><p>Hola <span class=\\\"mention\\\" data-mention-id=\\\"nombre_completo\\\"><span class=\\\"mention\\\" data-mention-id=\\\"nombre_completo\\\"><span class=\\\"mention\\\" data-mention-id=\\\"nombre\\\">@nombre</span>_completo</span></span>,</p><p>Le contactamos para informarle que la cuota de su póliza <strong><span class=\\\"mention\\\" data-mention-id=\\\"referencia\\\"><span class=\\\"mention\\\" data-mention-id=\\\"referencia\\\">@referencia</span></span></strong> con BCI Seguros venció el <strong><span class=\\\"mention\\\" data-mention-id=\\\"fecha_vencimiento\\\"><span class=\\\"mention\\\" data-mention-id=\\\"fecha_vencimiento\\\">@fecha_vencimiento</span></span>.</strong></p><p>Puede regularizar el pago a través de las siguientes alternativas:</p><ol><li><p>En línea a través de nuestro portal <a href=\\\"https://www.bciseguros.cl/pagoenlinea/pagoCuota/\\\" rel=\\\"noopener noreferrer nofollow\\\"><u>www.Bciseguros.cl</u></a></p></li><li><p>Pago en <a href=\\\"http://www.servipag.cl\\\" rel=\\\"noopener noreferrer nofollow\\\"><u>www.servipag.cl</u></a></p></li><li><p>En Banco BCI, Banco de Chile, Banco Santander o en cualquier sucursal de Servipag a lo largo del país con su estado de cuenta.</p></li><li><p>Sucursales de BCI Seguros a lo largo del país.</p></li></ol><p>Atentamente,</p><p><em>Subgerencia de Cobranzas y Medios de Pago</em></p><p><em>Para cualquier consulta, puede comunicarse con nosotros al Centro de Respuesta Inmediata (CRI), desde teléfono fijo al 600 6000 292 o desde celulares al 22 6799700. pruebaaaaaa </em><span class=\\\"mention\\\" data-mention-id=\\\"monto\\\"><span class=\\\"mention\\\" data-mention-id=\\\"monto\\\">@monto</span></span> <span class=\\\"mention\\\" data-mention-id=\\\"moneda\\\"><span class=\\\"mention\\\" data-mention-id=\\\"moneda\\\">@moneda</span></span> </p><p><strong>Si al recibo de este correo usted ha regularizado esta situación, le solicitamos dejar sin efecto esta comunicación.</strong></p>" matches = re.finditer(regex, test_str) 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