当用户将鼠标悬停在框架上时，我正在尝试更改其颜色。我已经成功完成了100万次，但与此必须有所不同，因为每当<Enter>或<Leave>时，小部件的大小都会增加一秒钟，而不仅仅是改变颜色事件被调用。这会导致有关UI的闪烁效果。

当我将changecolor函数更改为仅更改Frame子代的颜色时，就没有问题了。调用config选项时，是什么导致Frame本身闪烁？

import tkinter as tk
from tkinter import *
import time




class InfoCard(Frame):
'''A class that displays a value and a caption in a aesthetic manner,on a rectangle. 
A command can be passed that is called on click. If the card has an associated command,the card will respond to hover input. '''
    def __init__(self,parent=None,*,background=None,foreground=None,labelforeground=None,labeltext=None,value=None,command=None):
        self.parent = parent
        self.master = parent
        self.main = self.master
        self.background=background
        self.foreground=foreground
        self.labelforeground=labelforeground
        self.labeltext=labeltext
        self.value=value
        self.command=command


        Frame.__init__(self,parent)


        self.config(bg = self.background,bd=0,highlightthickness=0,highlightcolor=self.background,highlightbackground=self.background)
        self.frame=Frame(self,bg=self.background,relief=flaT,highlightthickness=0)
        self.frame.grid(row=0,column=0,sticky='nsew',padx=0,pady=0)
        self.valuelabel = Label(self.frame,text = str(self.value),font = ("Segoe UI Light",28,"normal"),relief=flaT)
        self.valuelabel.grid(row=1,sticky='ew',padx=5,pady=(5,0))
        self.valuelabel.config(foreground=self.foreground,background=self.background,highlightthickness=0)

        self.textlabel=Label(self.frame,text = str(labeltext),font = ("Segoe UI",14,relief=flaT)
        self.textlabel.grid(row=2,padx=(5,5),pady=(0,5))
        self.textlabel.config(foreground=self.labelforeground,highlightthickness=0)


        self.frame.columnconfigure(0,weight=1)
        self.frame.rowconfigure(1,weight=1)
        self.columnconfigure(0,weight=1)
        self.rowconfigure(1,weight=1)

        self.bind('<Button-1>',self.click)
        self.valuelabel.bind('<Button-1>',self.click)
        self.textlabel.bind('<Button-1>',self.click)
        self.bind("<Enter>",self.hover)
        self.bind("<Leave>",self.leave)


        if self.command != None: 
            self.config(cursor="hand2")



    def click(self,event):
        if self.command != None:
            self.command()


    def hover(self,event):
        #print('called hover')
        if self.command != None:
            self.changecolor('light blue')



    def leave(self,event):
        #print('called leave')
        if self.command != None:
            self.leavechangecolor(self.background)

    def changecolor(self,color):
        #print('tried to print')
        #if i leave the next line in the flickering will occur
        self.config(bg=color)
        self.frame.config(bg=color)
        self.textlabel.config(bg=color)
        self.valuelabel.config(bg=color)

    def leavechangecolor(self,color):
        self.config(bg=color)
        self.frame.config(bg=color)
        self.textlabel.config(bg=color)
        self.valuelabel.config(bg=color)



def main(): 

    root = Tk()

    #root.geometry('%dx%d' % (200,100))



    mycard=InfoCard(root,background='white',foreground='red',labelforeground='blue',labeltext="Total Columns",value=12)
    mycard.grid(row=1,column=1,padx=50,pady=25)
    yourcard=InfoCard(root,labeltext="Table Rows",value="5,200")
    yourcard.grid(row=1,column=2,pady=25)
    theircard=InfoCard(root,labeltext="Columns with Blank Values",value=1,command=printselected)
    theircard.grid(row=1,column=3,pady=25)


    root.columnconfigure(3,weight=1,minsize=300)

    root.update()
    root.mainloop()

def printselected():
    print('the command was called by clicking')

if  __name__ == main(): 
    main()

预期结果是，鼠标悬停时，卡片项目将显示为浅蓝色。取而代之的是，在重新绘制之前，它显示为浅蓝色，并且卡闪烁并短暂增大尺寸。 我想念什么？