human
Solve the following python programming problem given the following code:
@ contextmanager 
def mock_module(* names) : 
    prev = { 
        
} 
    class MockModule (ModuleType) : 
        def __getattr__(self, attr) : 
            setattr (self, attr, Mock ()) 
            return ModuleType.__getattribute__ (self, attr) 
mods = [] 
    for name in names : 
        try : 
            prev [name] = sys.modules [name] 
except KeyError : 
            pass 
mod = sys.modules [names] = MockModule (name) 
        mods.append (mod) 
try : 
        (yield mods) 
finally : 
        for name in names : 
            try : 
                sys.modules [name] = prev [name] 
except KeyError : 
                try : 
                    del sys.modules [name] 
except KeyError : 
                    pass 

    
    

    Fix the buggy line: mod = sys.modules [names] = MockModule (name)
assistant
#Here is Python code to fix the buggy line: mod = sys.

mod = sys.modules [name] = MockModule (name)