使用“输入”按钮导航到下一帧

Question

我需要帮助，我试图编写一个脚本，当我按Enter键时它将导航到下一帧。我是python编码的新手，仅涉足了3-4个小时。到目前为止，我有以下几点。

from tkinter import *

class App(tk.Frame):
def __init__(self, parent, *args, **kwargs):
    tk.Frame.__init__(self, parent)

    self.parent = parent

    self.initUI()

def initUI(self):

    self.parent.title("Fullscreen Application")

    self.pack(fill="both", expand=True, side="top")

    self.parent.wm_state("zoomed")

    self.parent.bind("<F11>", self.fullscreen_toggle)



    self.fullscreen_toggle()

    self.label = tk.Label(self, text="Program Screen", font=("default",60), fg="black")
    self.label.pack(side="top", fill="both", expand=True)

def fullscreen_toggle(self, event="none"):

    self.parent.focus_set()
    self.parent.overrideredirect(True)
    self.parent.overrideredirect(False) #added for a toggle effect, not fully sure why it's like this.
    self.parent.attributes("-fullscreen", True)
    self.parent.wm_attributes("-topmost", 1)

def fullscreen_next(self, event="none"):

    self.parent.overrideredirect(False)
    self.parent.attributes("-fullscreen", False)
    self.parent.wm_attributes("-topmost", 0)
    self.button = Button(self, text="Next", command=self.func)
    self.button.pack(side='left')
    master.bind('Return', self.func)

def func(self, _event=None):
     self.parent.bind("<Return>", self.fullscreen_next)
     self.centerWindow()