我得到:
print (p.s) AttributeError: StartPage instance has no attribute 's'
这是我的密码:
import Tkinter as tk
class SampleApp(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
self.s = []
self.rowconfigure(0, weight=1)
self.columnconfigure(0, weight=1)
container = tk.Frame(self)
container.grid(row=0, column=0, sticky='we')
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.frames = {}
for F in (StartPage, images_result):
page_name = F.__name__
frame = F(parent=container, controller=self)
frame.grid(row=0, column=0, sticky='nsew')
self.frames[page_name] = frame
self.show_frame("StartPage")
def get_SP(self):
return self.frames["StartPage"]
def images(self, page_name):
self.s = [1, 2]
frame = self.frames[page_name]
frame.tkraise()
def show_frame(self, page_name):
'''Show a frame for the given page name'''
frame = self.frames[page_name]
frame.grid(row=0, column=0, sticky='snew')
frame.tkraise()
class StartPage(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
self.controller = controller
self.image_btn = tk.Button(self, text="Images", command=lambda: controller.images("images_result"))
self.image_btn.grid(row=0, column=0, sticky='snew')
class images_result(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
self.controller = controller
p = self.controller.get_SP()
print (p.s)
app = SampleApp()
app.mainloop()
编辑:
我希望SampleApp中的函数images更新SampleApp的属性s,然后我希望能够从类images\u结果访问它。你知道吗
我试着用
print(self.controller.s)
但是这就给了我[],而且似乎函数images对s属性所做的修改对于images\u结果是不可见的。你知道吗
代码中唯一作为
s
属性的类是SampleApp
。这个类的实例作为每个页面的controller
属性传递。因此,要从页面内访问s
对象的SampleApp
属性,将通过控制器:需要注意的是,在您发布的代码中,
__init__
的images_remote
方法只会在应用程序首次启动时运行,因此__init__
函数不会打印通过与其他页面交互设置的任何值。你知道吗相关问题 更多 >
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