human
Solve the following python programming problem given the following code:
def _create_scalar_loader(self, context, key, _instance) : 
    def load_scalar_from_joined_new_row(state, dict_, row) : 
        dict_ [key] = _instance (row, None) 
def load_scalar_from_joined_existing_row(state, dict_, row) : 
        existing = _instance (row, None) 
        if ((existing is not None) and (key in dict_) and (existing is not dict_ [key])) : 
            util.warn (("Multiple rows returned with uselist=False for eagerly-loaded attribute '%s' " % self)) 
def load_scalar_from_joined_exec(state, dict_, row) : 
        _instance (row, None) 
return (load_scalar_from_joined_new_row, load_scalar_from_joined_new_row, None, load_scalar_from_joined_exec) 

    
    

    Fix the buggy line: return (load_scalar_from_joined_new_row, load_scalar_from_joined_new_row, None, load_scalar_from_joined_exec)
assistant
#Here is Python code to fix the buggy line: return (load_scalar_from_joined_new_row, load_scalar_from_joined_new_row, None, load_scalar_from_joined_exec)
.

return (load_scalar_from_joined_new_row, def load_scalar_from_joined_existing_row(, None, load_scalar_from_joined_exec)