不确定我的代码有什么问题（Tkinter BEGINNER）

Question

我正在创建一个非常简单的GUI，每个帧都应该有一个Continue和Exit按钮。我需要继续按钮来打开一个带有书写，小部件等的新框架。

第一帧（frame1）在我调用frame_2函数时起作用 但是由此我不知道如何打开frame_3并正确销毁frame 2。

以下是目前的代码：

import tkinter
from tkinter.constants import *
tk = tkinter.Tk()


def frame_2(): #ENTERING AGE
    frame1.grid_forget()
    frame1.destroy()
    frame2 = tkinter.Frame(tk, borderwidth=2,)
    frame2.pack(fill=BOTH,expand=1,pady=50,padx=80)

    need_info = tkinter.Label(frame2, text="I need some information first...")
   need_info.grid(row=0, column=0) #displays text at top of frame

    enter_age = tkinter.Label(frame2, text="Please enter your age!")
    enter_age.grid(row=2, column=0) #displays second line of text

    age = tkinter.Entry(frame2, width=10)
    age.grid(row=3, column=0)

    nextpage = tkinter.Button(frame2,text="Continue",command=frame2.destroy)
    nextpage.grid(row=10, column=0)
    exitapp = tkinter.Button(frame2,text="Exit",command=tk.destroy) #exits programme
    exitapp.grid(row=12, column=0)


def frame_three(): #ENTERING EDUCATION
    frame_2().grid.forget()
    frame_2().destroy()
    frame3 = tkinter.Frame(tk, borderwidth=2)
    frame3.pack(fill=BOTH,expand=1,pady=50,padx=80)

def frame_3(): #ENTERING EDUCATION
    frame_2().grid.forget()
    frame_2().destroy()
    frame3 = tkinter.Frame(tk, borderwidth=2)
    frame3.pack(fill=BOTH,expand=1,pady=50,padx=80)
    age_confirm = tkinter.Label(frame3, text="You entered 38!")
    age_confirm.grid(row=0, column=0)
    nextpage.grid(row=10, column=0)
    exitapp = tkinter.Button(frame2,text="Exit",command=tk.destroy) #exits programme
    exitapp.grid(row=12, column=0)





frame1 = tkinter.Frame(tk, borderwidth=2) #WELCOME PAGE, a.k.a The first frame
frame1.pack(fill=BOTH,expand=1,pady=50,padx=80)
label = tkinter.Label(frame1, text="Welcome to NAME GAME! I'm going to guess who you are...")
label.grid(row=0, column=0) #displays text at top of frame


nextpage = tkinter.Button(frame1,text="Continue",command=frame_2)

def frame_2(): #ENTERING AGE
    frame1.grid_forget()
    frame1.destroy()
    frame2 = tkinter.Frame(tk, borderwidth=2,)
    frame2.pack(fill=BOTH,expand=1,pady=50,padx=80)

    need_info = tkinter.Label(frame2, text="I need some information first...")
    need_info.grid(row=0, column=0) #displays text at top of frame

    enter_age = tkinter.Label(frame2, text="Please enter your age!")
    enter_age.grid(row=2, column=0) #displays second line of text

    age = tkinter.Entry(frame2, width=10)
    age.grid(row=3, column=0)

    nextpage = tkinter.Button(frame2,text="Continue",command=frame_3)
    nextpage.grid(row=10, column=0)
    exitapp = tkinter.Button(frame2,text="Exit",command=tk.destroy) #exits programme
    exitapp.grid(row=12, column=0)

nextpage.grid(row=2, column=0)
exitapp = tkinter.Button(frame1,text="Exit",command=tk.destroy) #exits programme
exitapp.grid(row=4, column=0)



tk.mainloop()

Answer 1

你的代码有点搞砸了。 在下面找到一个工作示例。 在发布任何其他问题之前，请确保您的代码是“可运行的”，如果您正在努力解决逻辑问题或发布错误消息（在python控制台中打印错误）。

请确保缩进正确。

当我使用python 2.7时，您需要将Tkinter替换为tkinter。 可能需要再次从BOTH导入tkinter.constants。

您的代码出了什么问题？

• 您对对象和函数使用了类似的名称。这样做的原因是你试过frame_2().grid.forget() - 它有什么问题？您需要在函数调用（frame_2()）而不是对象（frame2）上调用某些内容。此对象也未被声明为全局，因此没有机会获取您想要的对象但是全局声明它。 （包括初始化和使用） 这条线还有什么不对？该函数在作为“函数调用对象”一部分的网格对象上被称为grid_forget而不是forget
• 第二件事：您为两个不同的功能使用了相同的函数名称。 不要那样做。只是不要。

import Tkinter 
tk = Tkinter.Tk()
def frame_2(): 
    """
     ENTERING AGE
    """
    global frame1
    global frame2
    if frame1 != None:
            frame1.grid_forget()
            frame1.destroy()
            frame1=None
    frame2 = Tkinter.Frame(tk, borderwidth=2,)
    frame2.pack(fill=Tkinter.BOTH,expand=1,pady=50,padx=80)
    need_info = Tkinter.Label(frame2, text="I need some information first...")
    need_info.grid(row=0, column=0) #displays text at top of frame
    enter_age = Tkinter.Label(frame2, text="Please enter your age!")
    enter_age.grid(row=2, column=0) #displays second line of text

    age = Tkinter.Entry(frame2, width=10)
    age.grid(row=3, column=0)

    nextpage = Tkinter.Button(frame2,text="Continue",command=frame_3)
    nextpage.grid(row=10, column=0)
    exitapp = Tkinter.Button(frame2,text="Exit",command=tk.destroy) #exits programme
    exitapp.grid(row=12, column=0)

def frame_3(): #ENTERING EDUCATION
    global frame2
    global frame3
    if frame2!=None:
        frame2.grid_forget()
        frame2.destroy()
        frame2=None
    frame3 = Tkinter.Frame(tk, borderwidth=2)
    frame3.pack(fill=Tkinter.BOTH,expand=1,pady=50,padx=80)
    age_confirm = Tkinter.Label(frame3, text="You entered 38!")
    age_confirm.grid(row=0, column=0)
    exitapp = Tkinter.Button(frame3,text="Exit",command=tk.destroy) #exits programme
    exitapp.grid(row=12, column=0)

frame2=None
frame3=None
frame1 = Tkinter.Frame(tk, borderwidth=2) #WELCOME PAGE, a.k.a The first frame
frame1.pack(fill=Tkinter.BOTH,expand=1,pady=50,padx=80)
label = Tkinter.Label(frame1, text="Welcome to NAME GAME! I'm going to guess who you are...")
label.grid(row=0, column=0) #displays text at top of frame

nextpage = Tkinter.Button(frame1,text="Continue",command=frame_2)
nextpage.grid(row=2, column=0)
exitapp = Tkinter.Button(frame1,text="Exit",command=tk.destroy) #exits programme
exitapp.grid(row=4, column=0)

tk.mainloop()

import Tkinter tk = Tkinter.Tk() def frame_2(): """ ENTERING AGE """ global frame1 global frame2 if frame1 != None: frame1.grid_forget() frame1.destroy() frame1=None frame2 = Tkinter.Frame(tk, borderwidth=2,) frame2.pack(fill=Tkinter.BOTH,expand=1,pady=50,padx=80) need_info = Tkinter.Label(frame2, text="I need some information first...") need_info.grid(row=0, column=0) #displays text at top of frame enter_age = Tkinter.Label(frame2, text="Please enter your age!") enter_age.grid(row=2, column=0) #displays second line of text age = Tkinter.Entry(frame2, width=10) age.grid(row=3, column=0) nextpage = Tkinter.Button(frame2,text="Continue",command=frame_3) nextpage.grid(row=10, column=0) exitapp = Tkinter.Button(frame2,text="Exit",command=tk.destroy) #exits programme exitapp.grid(row=12, column=0) def frame_3(): #ENTERING EDUCATION global frame2 global frame3 if frame2!=None: frame2.grid_forget() frame2.destroy() frame2=None frame3 = Tkinter.Frame(tk, borderwidth=2) frame3.pack(fill=Tkinter.BOTH,expand=1,pady=50,padx=80) age_confirm = Tkinter.Label(frame3, text="You entered 38!") age_confirm.grid(row=0, column=0) exitapp = Tkinter.Button(frame3,text="Exit",command=tk.destroy) #exits programme exitapp.grid(row=12, column=0) frame2=None frame3=None frame1 = Tkinter.Frame(tk, borderwidth=2) #WELCOME PAGE, a.k.a The first frame frame1.pack(fill=Tkinter.BOTH,expand=1,pady=50,padx=80) label = Tkinter.Label(frame1, text="Welcome to NAME GAME! I'm going to guess who you are...") label.grid(row=0, column=0) #displays text at top of frame nextpage = Tkinter.Button(frame1,text="Continue",command=frame_2) nextpage.grid(row=2, column=0) exitapp = Tkinter.Button(frame1,text="Exit",command=tk.destroy) #exits programme exitapp.grid(row=4, column=0) tk.mainloop()