Method get_param

Lib/email/message.py:711–743

Return the parameter value if found in the Content-Type header. Optional failobj is the object to return if there is no Content-Type header, or the Content-Type header has no such parameter. Optional header is the header to search instead of Content-Type. Parameter

(self, param, failobj=None, header='content-type',
                  unquote=True)

            return params

    def get_param(self, param, failobj=None, header='content-type',
                  unquote=True):
        """Return the parameter value if found in the Content-Type header.

        Optional failobj is the object to return if there is no Content-Type
        header, or the Content-Type header has no such parameter.  Optional
        header is the header to search instead of Content-Type.

        Parameter keys are always compared case insensitively.  The return
        value can either be a string, or a 3-tuple if the parameter was RFC
        2231 encoded.  When it's a 3-tuple, the elements of the value are of
        the form (CHARSET, LANGUAGE, VALUE).  Note that both CHARSET and
        LANGUAGE can be None, in which case you should consider VALUE to be
        encoded in the us-ascii charset.  You can usually ignore LANGUAGE.
        The parameter value (either the returned string, or the VALUE item in
        the 3-tuple) is always unquoted, unless unquote is set to False.

        If your application doesn't care whether the parameter was RFC 2231
        encoded, it can turn the return value into a string as follows:

            rawparam = msg.get_param('foo')
            param = email.utils.collapse_rfc2231_value(rawparam)

        """
        if header not in self:
            return failobj
        for k, v in self._get_params_preserve(failobj, header):
            if k.lower() == param.lower():
                if unquote:
                    return _unquotevalue(v)
                else:
                    return v
        return failobj

    def set_param(self, param, value, header='Content-Type', requote=True,
                  charset=None, language='', replace=False):