<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def client_list(self, *args):
 """Display a list of connected clients"""

        if len(self._clients) == 0:
            self.log('No clients connected')
        else:
            self.log(self._clients, pretty=True)