python3 tkinter figcanvastkagg破坏可用内存失败内存泄漏

问题描述

output image

我用figcanvastkagg生成了100个画布图形，然后销毁了所有图形。似乎无法像初始状态一样释放所有内存（请参见上面的链接）。

import tkinter as tk
from tkinter import filedialog
from matplotlib.backends.backend_tkagg import (figureCanvasTkAgg,NavigationToolbar2Tk) 
from matplotlib.figure import figure 
import matplotlib.pyplot as plt
from data import dataprocess
import os
import psutil
import gc
root = tk.Tk()
root.geometry('1500x800')
process = psutil.Process(os.getpid())
print("Ini",process.memory_info().RSS)
for i in range(100):
    f = figure(figsize=(5,5),dpi=100)
    a = f.add_subplot(111)
    a.plot([1,2,3,4,5,6,7,8],[5,1,8,9,5])
    a.set_title("fig" + str(i))
    canvas = figureCanvasTkAgg(f,master = root)
    canvas.draw()
    canvas.get_tk_widget().grid(row=i,column=0)
process = psutil.Process(os.getpid())
print("plot",process.memory_info().RSS)
for label in root.grid_slaves():
    label.destroy()
gc.collect()
process = psutil.Process(os.getpid())
print("destroy all plot",process.memory_info().RSS)
root.mainloop()

解决方法

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