[已解决]类里面的函数调用问题求助

kking1

class Task:
    image_window_list = []
    def setId(self,Id):
        self.Id = Id

    def setNoDownlink(self,NoDownlink):
        self.setNoDownlink = NoDownlink

    def setTaskRequest(self,task_request):
        self.setTaskRequest = task_request

    def setTaskProperty(self,task_property):
        self.setTaskProperty = task_property

    def setTarget(self,task_target):
        self.setTarget = task_target

    def getImageWindowList(self,window):
        self.getImageWindowList = Task.image_window_list.append(window)
   
a = Task()
window1 = 1
window2 = 2
print(type(window1))
print(type(window2))
a.getImageWindowList(window1)
a.getImageWindowList(window2)
print(a.image_window_list)



求问大佬，为啥a.getImageWindowList(window2)这一行会报TypeError: 'NoneType' object is not callable这个错误？

最佳答案

月排行榜 / 总排行榜

isdkz

2023-2-13 16:28:15

1. class Task:
   
2.     image_window_list = []
   
3.     def setId(self,Id):
   
4.         self.Id = Id
   
5. 
   
6.     def setNoDownlink(self,NoDownlink):
   
7.         self.setNoDownlink = NoDownlink
   
8. 
   
9.     def setTaskRequest(self,task_request):
   
10.         self.setTaskRequest = task_request
    
11. 
    
12.     def setTaskProperty(self,task_property):
    
13.         self.setTaskProperty = task_property
    
14. 
    
15.     def setTarget(self,task_target):
    
16.         self.setTarget = task_target
    
17. 
    
18.     def getImageWindowList(self,window):
    
19.         Task.image_window_list.append(window)                      # 这一行代码，你把 getImageWindowList 方法重新赋值了，而 append 的返回值是 None
    
20.    
    
21. a = Task()
    
22. window1 = 1
    
23. window2 = 2
    
24. print(type(window1))
    
25. print(type(window2))
    
26. a.getImageWindowList(window1)
    
27. a.getImageWindowList(window2)
    
28. print(a.image_window_list)

复制代码

跳转到最佳答案楼层

isdkz

1. class Task:
   
2.     image_window_list = []
   
3.     def setId(self,Id):
   
4.         self.Id = Id
   
5. 
   
6.     def setNoDownlink(self,NoDownlink):
   
7.         self.setNoDownlink = NoDownlink
   
8. 
   
9.     def setTaskRequest(self,task_request):
   
10.         self.setTaskRequest = task_request
    
11. 
    
12.     def setTaskProperty(self,task_property):
    
13.         self.setTaskProperty = task_property
    
14. 
    
15.     def setTarget(self,task_target):
    
16.         self.setTarget = task_target
    
17. 
    
18.     def getImageWindowList(self,window):
    
19.         Task.image_window_list.append(window)                      # 这一行代码，你把 getImageWindowList 方法重新赋值了，而 append 的返回值是 None
    
20.    
    
21. a = Task()
    
22. window1 = 1
    
23. window2 = 2
    
24. print(type(window1))
    
25. print(type(window2))
    
26. a.getImageWindowList(window1)
    
27. a.getImageWindowList(window2)
    
28. print(a.image_window_list)

复制代码

kking1

isdkz 发表于 2023-2-13 16:28

那应该怎样把那个window2的值插进去呢？

isdkz

kking1 发表于 2023-2-13 17:18
那应该怎样把那个window2的值插进去呢？

我改的那个代码你有运行了吗？那个就已经把 windows2 的值插进去了呀

kking1

isdkz 发表于 2023-2-13 16:28

没重新赋值吧？只是把元素插入一个列表而已

kking1

isdkz 发表于 2023-2-13 17:19
我改的那个代码你有运行了吗？那个就已经把 windows2 的值插进去了呀

没看到你改的那个代码额

kking1

isdkz 发表于 2023-2-13 17:19
我改的那个代码你有运行了吗？那个就已经把 windows2 的值插进去了呀

哦，看到了，谢谢

isdkz

kking1 发表于 2023-2-13 17:22
没看到你改的那个代码额

1. class Task:
   
2.     image_window_list = []
   
3.     def setId(self,Id):
   
4.         self.Id = Id
   
5. 
   
6.     def setNoDownlink(self,NoDownlink):
   
7.         self.setNoDownlink = NoDownlink
   
8. 
   
9.     def setTaskRequest(self,task_request):
   
10.         self.setTaskRequest = task_request
    
11. 
    
12.     def setTaskProperty(self,task_property):
    
13.         self.setTaskProperty = task_property
    
14. 
    
15.     def setTarget(self,task_target):
    
16.         self.setTarget = task_target
    
17. 
    
18.     def getImageWindowList(self,window):
    
19.         Task.image_window_list.append(window)                      # 这一行代码，你把 getImageWindowList 方法重新赋值了，而 append 的返回值是 None
    
20.    
    
21. a = Task()
    
22. window1 = 1
    
23. window2 = 2
    
24. print(type(window1))
    
25. print(type(window2))
    
26. a.getImageWindowList(window1)
    
27. a.getImageWindowList(window2)
    
28. print(a.image_window_list)

复制代码

isdkz

kking1 发表于 2023-2-13 17:20
没重新赋值吧？只是把元素插入一个列表而已

因为那个是我改了后的呀

你看看你没改之前的：

self.getImageWindowList = Task.image_window_list.append(window)