因为我不确定你的代码是什么，或者你想做什么，这是你第二次问这个问题（在一个新的账户上），也许需要一个新的方法。在这里，我展示了一个如何为图形创建GUI的示例，以及每次单击图形按钮时图形如何更改。也许这种技术会更好地服务于你想要实现的目标。我强烈建议您阅读PySimpleGUI documentation：

import PySimpleGUI as sg
import matplotlib.pyplot as plt
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2Tk

# Random data for the graph
data1 = [1,2,3,4,5]
data2 = [5,4,3,2,1]

# Graphing function
def graph(data):
    fig, ax1 = plt.subplots(1)
    plt.plot(data)
    draw_figure(window['Graph_Canvas'].TKCanvas, fig)
    
# This definition is used to create a Matplotlib figure inside the main window
def draw_figure(canvas, fig):
    if canvas.children:
        plt.close()                           # close any open figures (too many open pyplot figures eat up RAM)
        for child in canvas.winfo_children(): # close any already created canvas figures
            child.destroy()            
    figure_canvas_agg = FigureCanvasTkAgg(fig, canvas)
    figure_canvas_agg.draw()
    figure_canvas_agg.get_tk_widget().pack(side='top', fill='both', expand=1)
    return figure_canvas_agg

# Layout of the GUI
layout = [
    [sg.Push(), sg.B('Graph'), sg.Push()],
    [sg.Canvas(key = 'Graph_Canvas')],
]

window = sg.Window(title='Test', layout = layout, resizable=True).Finalize()
window.BringToFront()

# Some place holder variables to be used later
version, data = 0, []
while True:
    event, values = window.read()
    if event == sg.WIN_CLOSED:
        break
        
    elif event == 'Graph':
        
        # If data1 was graphed then graph data2 and vice versa
        if version == 0: 
            data = data1
            version = 1
        else:
            data = data2
            version = 0
        # Call the graph function
        graph(data)
        
window.close()

字符串