human
Solve the following python programming problem given the following code:
def _nodes_command(self, func, shell = False) : 
    provider = os.environ ['KUBERNETES_PROVIDER'] 
    if isinstance (func, str) : 
        func_str = func 
        def _func(node, zone) : 
            split = node.split () 
            if (len (split) > 0) : 
                node_name = split [0] 
                if (node_name != 'kubernetes-master') : 
                    info_log (self.TAG, 'Running {0} on {1}...'.format (func, node_name)) 
                    cmd = ['gcloud', 'compute', 'ssh', node_name, '--zone', zone, '--command', '{}'.format (func_str)] 
                    return subprocess.Popen (cmd, shell = shell) 
return None 
func = _func 
if (provider == 'gce') : 
        zone = os.environ.get ('KUBE_GCE_ZONE') 
        if (not zone) : 
            zone_re = re.compile ('ZONE\\=\\$\\{KUBE_GCE_ZONE:\\-(?P<zone>.*)\\}') 
            with open (os.path.join (_func.kubernetes_home, 'cluster/gce/config-default.sh'), 'r') as f : 
                m = zone_re.search (f.read ()) 
                if m : 
                    zone = m.group ('zone') 
else : 
                    error_log (self.TAG, 'zone could not be determined') 
if (not zone) : 
            return False 
nodes_cmd = ['kubectl.sh', 'get', 'nodes'] 
        output = subprocess.check_output (nodes_cmd) 
        nodes = output.split ('
') [1 :] 
        return [func (node, zone) for node in nodes] 
else : 
        if (provider == 'aws') : 
            return [] 
else : 
            warning_log (self.TAG, 'Only aws and gce providers are currently supported') 
            return [] 

    
    

    Fix the buggy line: with open (os.path.join (_func.kubernetes_home, 'cluster/gce/config-default.sh'), 'r') as f :
assistant
#Here is Python code to fix the buggy line: with open (os.

with open (os.path.join (self.kubernetes_home, 'cluster/gce/config-default.sh'), 'r') as f :