鸿蒙传说
下面是一个简单的示例,说明如何直接更新根窗口和全局命名空间中的任何变量。它只是您在从按钮调用的函数中执行的操作的问题。如果您有任何疑问,请告诉我。import tkinter as tkroot = tk.Tk()root.config(background='white')root.geometry('250x100')label_1 = tk.Label(root, text=0)label_1.pack()label_2 = tk.Label(root, text='test')label_2.pack()def toggle_root_bg(): # check the color of the root window and toggle accordingly. if root['background'] == 'black': root.config(background='white') else: root.config(background='black')def update_root_labels(one, two): # Apply argument values to the text fields of the labels defined in the global namespace. label_1.config(text=one) label_2.config(text=two)def sub_window(): # setting sub window variable name to be used with other widgets. top = tk.Toplevel(root) tk.Label(top, text='Provide a number: ').grid(row=0, column=0) tk.Label(top, text='Provide a string: ').grid(row=1, column=0) entry_1 = tk.Entry(top) entry_2 = tk.Entry(top) entry_1.grid(row=0, column=1) entry_2.grid(row=1, column=1) # create a sub function to get the current entry field values # then pass these values on to our update function. def submit_update(): update_root_labels(entry_1.get(), entry_2.get()) tk.Button(top, text='Update root labels', command=submit_update).grid(row=2, column=0) tk.Button(top, text='Toggle Root Background', command=toggle_root_bg).grid(row=3, column=0)tk.Button(root, text='Open sub window', command=sub_window).pack()root.mainloop()以前:后: