為什么我無法訪問 Classroom 對象？它顯示： next_scene_name = start_scene.enter() #error TypeError: enter() missing 1 required positional argument: 'self'請解釋我犯了什么錯誤。#classclass Engine(object): #(map_object_with_classroom, player_object) def __init__(self,map_object,player_object): self.map_object = map_object self.player_object = player_object def play(self): print('\n') print('test ok') start_scene = self.map_object.begin() end_scene = self.map_object.Senario['auditorium'] while start_scene != end_scene: next_scene_name = start_scene.enter() #error start_scene = self.map_object.next_scene(next_scene_name)class Player(object): Student_influence = 20 Staff_influence = 20 principle_influence = 20 def __init__(self,name): self.name = nameclass Scene(object): def enter(self): print("test")class ClassRoom(Scene): def enter(self): print('test ok!') return 'sportsclub'class SportsClub(Scene): def enter(self): print('test ok!') return 'scienceclub'class ScienceClub(Scene): def enter(self): print('test ok!') return 'canteen'class Canteen(Scene): def enter(self): print('test ok!') return 'auditorium'class Auditorium(Scene): def enter(self): print('test ok!') return 'finished'class Finished(Scene): def enter(self): print('test ok!') return Noneclass Map(object): Senario = {'finished':Finished, 'classroom':ClassRoom,'sportclub':SportsClub, 'scienceclub':ScienceClub, 'canteen':Canteen, 'auditorium':Auditorium} def __init__(self,start_scene): self.start_scene = start_scene def begin(self): return self.next_scene(self.start_scene) def next_scene(self,scene_name): nxt = self.Senario.get(scene_name) return nxt當我打印 start_scene 它顯示那是什么？但是當我打印 ClassRoom 類的實例時，它顯示 < main .ClassRoom object>
1 回答
撒科打諢
TA貢獻1934條經驗 獲得超2個贊
在next_scene中，您正在返回，但ClassRoom不是. 為此，您需要，然后有一個ClassRoomreturn nxt()self
class Map(object):
Senario = {'finished':Finished, 'classroom':ClassRoom,'sportclub':SportsClub, 'scienceclub':ScienceClub, 'canteen':Canteen, 'auditorium':Auditorium}
def __init__(self,start_scene):
self.start_scene = start_scene
def begin(self):
return self.next_scene(self.start_scene)
def next_scene(self,scene_name):
# adding the parentheses here will call the class
# creating an instance
nxt = self.Senario.get(scene_name)()
return nxt
舉個小例子：
class X:
def something(self):
return 4
X.something()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: something() missing 1 required positional argument: 'self'
您還沒有創建任何實例，因此self還不存在。但是，如果我們將其更改為：
x = X()
x.something()
4
Aself被創建是因為底層的類機制將調用 的基本實現__init__，而不涉及血淋淋的細節
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