code: def cluster_list(verbose=False):
      '''
      Return a list of cluster of Postgres server (tuples of version and name).
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' postgres.cluster_list
  
          salt '*' postgres.cluster_list verbose=True
      '''
      cmd = [salt.utils.path.which('pg_lsclusters'), '--no-header']
      ret = __salt__['cmd.run_all'](' '.join([pipes.quote(c) for c in cmd]))
      if ret.get('retcode', 0) != 0:
          log.error('Error listing clusters')
      cluster_dict = _parse_pg_lscluster(ret['stdout'])
      if verbose:
          return cluster_dict
      return cluster_dict.keys(f cluster_list(verbose=False):
      '''
      Return a list of cluster of Postgres server (tuples of version and name).
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' postgres.cluster_list
  
          salt '*' postgres.cluster_list verbose=True
      '''
      cmd = [salt.utils.path.which('pg_lsclusters'), '--no-header']
      ret = __salt__['cmd.run_all'](' '.join([pipes.quote(c) for c in cmd]))
      if ret.get('retcode', 0) != 0:
          log.error('Error listing clusters')
      cluster_dict = _parse_pg_lscluster(ret['stdout'])
      if verbose:
          return cluster_dict
      return cluster_dict.keys()
docs: Return a list of cluster of Postgres server (tuples of version and name).
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' postgres.cluster_list
  
          salt '*' postgres.cluster_list verbose=True