import matplotlib
matplotlib.use("TkAgg")from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg
from matplotlib.figure import Figureimport tkinter as tk
from tkinter import ttkLARGE_FONT= ("Verdana", 12)class Application(tk.Tk):'''多页面测试程序界面与逻辑分离'''def __init__(self):super().__init__()self.iconbitmap(default="kankan_01.ico")self.wm_title("多页面测试程序")container = tk.Frame(self)container.pack(side="top", fill="both", expand = True)container.grid_rowconfigure(0, weight=1)container.grid_columnconfigure(0, weight=1)self.frames = {}for F in (StartPage, PageOne, PageTwo, PageThree):frame = F(container, self)self.frames[F] = frameframe.grid(row=0, column=0, sticky="nsew")  # 四个页面的位置都是 grid(row=0, column=0), 位置重叠，只有最上面的可见！！self.show_frame(StartPage)def show_frame(self, cont):frame = self.frames[cont]frame.tkraise() # 切换，提升当前 tk.Frame z轴顺序（使可见）！！此语句是本程序的点睛之处class StartPage(tk.Frame):'''主页'''def __init__(self, parent, root):super().__init__(parent)label = tk.Label(self, text="这里是主页", font=LARGE_FONT)label.pack(pady=10,padx=10)button1 = ttk.Button(self, text="去到第一页", command=lambda: root.show_frame(PageOne)).pack()button2 = ttk.Button(self, text="去到第二页", command=lambda: root.show_frame(PageTwo)).pack()button3 = ttk.Button(self, text="去到绘图页", command=lambda: root.show_frame(PageThree)).pack()class PageOne(tk.Frame):'''第一页'''def __init__(self, parent, root):super().__init__(parent)label = tk.Label(self, text="这是第一页", font=LARGE_FONT)label.pack(pady=10,padx=10)button1 = ttk.Button(self, text="回到主页", command=lambda: root.show_frame(StartPage)).pack()button2 = ttk.Button(self, text="去到第二页", command=lambda: root.show_frame(PageTwo)).pack()class PageTwo(tk.Frame):'''第二页'''def __init__(self, parent, root):super().__init__(parent)label = tk.Label(self, text="这是第二页", font=LARGE_FONT)label.pack(pady=10,padx=10)button1 = ttk.Button(self, text="回到主页", command=lambda: root.show_frame(StartPage)).pack()button2 = ttk.Button(self, text="去到第一页", command=lambda: root.show_frame(PageOne)).pack()class PageThree(tk.Frame):'''第三页'''def __init__(self, parent, root):super().__init__(parent)tk.Label(self, text="这是绘图页", font=LARGE_FONT).pack(pady=10,padx=10)button1 = ttk.Button(self, text="回到主页", command=lambda: root.show_frame(StartPage)).pack()fig = Figure(figsize=(5,5), dpi=100)a = fig.add_subplot(111)a.plot([1,2,3,4,5,6,7,8],[5,6,1,3,8,9,3,5])canvas = FigureCanvasTkAgg(fig, self)canvas.show()canvas.get_tk_widget().pack(side=tk.BOTTOM, fill=tk.BOTH, expand=True)toolbar = NavigationToolbar2TkAgg(canvas, self)toolbar.update()canvas._tkcanvas.pack(side=tk.TOP, fill=tk.BOTH, expand=True)if __name__ == '__main__':# 实例化Applicationapp = Application()# 主消息循环:app.mainloop()