human
Solve the following python programming problem given the following code:
def run_in_pool(pool, commands) : 
    def commands_run(commands) : 
        for command in commands : 
            if isinstance (command, (unicode, str)) : 
                run (command) 
else : 
                command () 
hosts = [h.identifier for h in pool.hosts] 
    passwords = dict (((host.identifier, host.password) for host in commands.hosts if (host.password is not None))) 
    with settings (hosts = hosts, passwords = passwords) : 
        tasks.execute (commands_run, commands) 

    
    

    Fix the buggy line: passwords = dict (((host.identifier, host.password) for host in commands.hosts if (host.password is not None)))
assistant
#Here is Python code to fix the buggy line: passwords = dict (((host.

passwords = dict (((host.identifier, host.password) for host in pool.hosts if (host.password is not None)))