<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def list_pools(self, retrieve_all=True, **_params):
 """Fetches a list of all load balancer pools for a project."""

        # Pass filters in "params" argument to do_request
        return self.list('pools', self.pools_path, retrieve_all,
                         **_params)