human
Solve the following python programming problem given the following code:
def condition(action_input = [], action_output = []) : 
    "
    Decorator condition specifies the required input data and output space.
    Both parameters are lists of tuples: (port, #tokens consumed/produced)
    Optionally, the port spec can be a port only, meaning #tokens is 1.
    Return value is an ActionResult object

    FIXME:
    - Modify ActionResult to specify how many tokens were read/written from/to each port
      E.g. ActionResult.tokens_consumed/produced are dicts: {'port1':4, 'port2':1, ...}
      Since reading is done in the wrapper, tokens_consumed is fixed and given by action_input.
      The action fills in tokens_produced and the wrapper uses that info when writing to ports.
    - We can keep the @condition syntax by making the change in the normalize step below.
    " 
    action_input = [(p if isinstance (p, (list, tuple)) else (p, 1)) for p in action_input] 
    action_output = [(p if isinstance (p, (list, tuple)) else (p, 1)) for p in action_output] 
    contract_output = tuple ((n for (_, n) in wrap)) 
    tokens_produced = sum (contract_output) 
    tokens_consumed = sum ([n for (_, n) in action_input]) 
    def wrap(action_method) : 
        @ functools.wraps (action_method) 
        def condition_wrapper(self) : 
            input_ok = all ([(self.inports [portname].available_tokens () >= repeat) for (portname, repeat) in action_input]) 
            output_ok = all ([(self.outports [portname].available_tokens () >= repeat) for (portname, repeat) in action_output]) 
            if ((not input_ok) or (not output_ok)) : 
                _log.debug (('%s.%s not runnable (%s, %s)' % (self.name, action_method.__name__, input_ok, output_ok))) 
                return ActionResult (did_fire = False) 
args = [] 
            ex = { 
                
} 
            for (portname, repeat) in action_input : 
                port = self.inports [portname] 
                tokenlist = [] 
                for i in range (repeat) : 
                    token = port.peek_token () 
             ...

    
    

    Fix the buggy line: contract_output = tuple ((n for (_, n) in wrap))
assistant
#Here is Python code to fix the buggy line: contract_output = tuple ((n for (_, n) in wrap))
.

contract_output = tuple ((n for (_, n) in action_output))