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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 informed_consent(self):
 """Create a URL for the user to give their consent through"""

        if self.typeable_handle is None:
            consent_url = [self.config['server']['server_url'],
                           "/get_initial_consent?username="]
            consent_url.append(urlsafe_b64encode(self.username))
            consent_url.append("&password=")
            consent_url.append(urlsafe_b64encode(self.password))
        else:
            consent_url = [self.config['server']['server_url'],
                           "/consent/"]
            consent_url.append(self.typeable_handle)

        consent_url = "".join(consent_url)
        print "Please go to %s to give your consent." % (consent_url)
        return consent_url