<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_client_ip(self):
 """Return the client IP from the environment."""


        if self.client_ip:
            return self.client_ip

        try:
            client = os.environ.get('SSH_CONNECTION',
                                    os.environ.get('SSH_CLIENT'))
            self.client_ip = client.split()[0]
            self.logdebug('client_ip: %s\n' % self.client_ip)
            return self.client_ip
        except:
            raise SSHEnvironmentError('cannot identify the ssh client '
                                      'IP address')