如何在外部函数中调用方法

Question

我需要一个reservation函数来调用该类的相应方法。

但是，如果我必须在类之外提供用户输入，我怎样才能将该参数传递给该方法？

class Stay: 
    def __init__(self): 
     self._type_room= '' 

    def set_type_room (self, NewRoom): 

     NewRoom= select_room() 
     self._type_room= NewRoom 


def select_room(): 
    Newroom= input ('insert') 
    if NewRoom == 'Single': 
     print ('ok') 
    else: 
     print ('only Single') 
    return NewRoom 

def reservation(): 
    stay= Stay() 
    stay.set_type_room(NewRoom) 

Answer 1

NewRoom没有定义（不存在）的功能reservation内或在全球范围内，所以你不能访问它。

当您通过select_room函数重新创建它时，您不必要地将参数传递给set_type_room。如果你想在set_type_room是setter方法

class Stay: 
    def __init__(self): 
     self._type_room= '' 

    def set_type_room (self): 
     self._type_room = select_room() 


def select_room(): 
    Newroom= input ('insert') 
    if NewRoom == 'Single': 
     print ('ok') 
    else: 
     print ('only Single') 
    return NewRoom 

def reservation(): 
    stay= Stay() 
    stay.set_type_room() 

：

所以，你可以删除的参数，你应该罚款

class Stay: 
    def __init__(self): 
     self._type_room= '' 

    def set_type_room (self, NewRoom): 
     self._type_room = NewRoom 

def select_room(stay): 
    NewRoom = input ('insert') 
    if NewRoom == 'Single': 
     print ('ok') 
    else: 
     print ('only Single') 
    stay.set_type_room(NewRoom) 

def reservation(): 
    stay = Stay() 
    select_room(stay)