为什么我的代码不能打印任何内容？

Question

为什么当我按下单选按钮然后按下提交按钮时，我的代码不会打印任何内容？例如，如果我按下“打开保存”单选按钮，将条目留空并按提交应打印“test2”，但无论我做什么，它都不会打印任何内容。

def Saves(): 
    global saveordelete 
    saveordelete = 0 
    global savedname 
    def openthesave(): 
     saveordelete = 1 
    def deletethesave(): 
     saveordelete = 2 
    def opensave(): 
     if saveordelete == 1: 
      openname = savedname.get() + ".txt" 
      my_file = Path(openname) 
      if my_file.is_file(): 
       print("tes1") 
      else: 
       print("test2") 
     elif saveordelete == 2: 
      openname = savedname.get() + ".txt" 
      my_file = Path(openname) 
      if my_file.is_file(): 
       print("test3") 
      else: 
       print("test4") 
    root = Tk()  
    root.title("Saves") 
    root.iconbitmap("morseicon.ico") 
    root.resizable(0,0) 
    Label(root, text="Name:").grid(row=0, column=0, sticky=W) 
    savedname = Entry(root, width=20) 
    savedname.grid(row=0, column=1) 
    Button(root, text="Submit", width=10, command=opensave, bg="aqua").grid(row=3, column=8) 
    Label(root, text="Choose kind:").grid(row=1, column=0, sticky=W) 
    Radiobutton(root, text="Open save", height="1", command=openthesave, value=1).grid(row=2, column=0, sticky=W) 
    Radiobutton(root, text="Delete save", height="1", command=deletethesave, value=2).grid(row=3, column=0, sticky=W) 
    root.mainloop() 

Answer 1

saveordelete是在功能和openthesave()deletethesave()局部变量。它们不会更改在Saves()中定义的全局值saveordelete。在两个函数中标记为global，或者（更好）使用一个类。