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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def parse_from_environ(self, environ):
 """Parses the information from the environment as form data. :param environ: the WSGI environment to be used for parsing. :return: A tuple in the form ``(stream, form, files)``. """

        content_type = environ.get("CONTENT_TYPE", "")
        content_length = get_content_length(environ)
        mimetype, options = parse_options_header(content_type)
        return self.parse(get_input_stream(environ), mimetype, content_length, options)