<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def _connect(self):
        '''
        Connect to F5
        '''
        try:
            self.bigIP = f5.BIGIP(hostname=self.lb,
                                  username=self.username,
                                  password=self.password,
                                  fromurl=True,
                                  wsdls=['LocalLB.VirtualServer',
                                         'LocalLB.Pool'])
        except Exception:
            raise Exception(
                'Unable to connect to {0}'.format(self.lb)
            )

        return True