tkinter如何获取复选框(Checkbutton)的值

from tkinter import *
 
# 初始化Tk()
myWindow = Tk()
# 设置标题
myWindow.title('python GUI Learning')
myWindow.geometry("%dx%d+%d+%d"%(400, 200, 200, 200))
# 创建Checkbutton
checkVar = StringVar(value="0")
check = Checkbutton(myWindow, text="Checkbutton test", variable=checkVar)
check.grid(row=0, column=0, sticky=W, padx=2 ,pady=5)
# 定义按钮点击事件
def button_Click(event=None):
    print(checkVar.get())
 
# 创建两个按钮
b1 =Button(myWindow, text='click me' , relief='raised', width=8, height=1, command=button_Click)
b1.grid(row=0, column=2, sticky=W, padx=2 ,pady=10)
 
# 进入消息循环
myWindow.mainloop()

import tkinter as tk
 
window=tk.Tk()
window.title('my window')
window.geometry('200x100')
 
l=tk.Label(window,
           bg='yellow',
           width=20,
           text='empty')
l.pack()
 
def print_selection():
    if(var1.get()==1)&(var2.get()==0):
        l.config(text='I love only Python ')
    elif (var1.get()==0)& (var2.get()==1):
        l.config(text='I love only C++')
    elif (var1.get()==0)&(var2.get()==0):
         l.config(text='I do not love either')
    else:
        l.config(text='I love both')
 
 
 
var1=tk.IntVar()
var2=tk.IntVar()
c1=tk.Checkbutton(window,
                  text='Python',
                  variable=var1,
                  onvalue=1,
                  offvalue=0,
                  command=print_selection
                  )
c1.pack()
c2=tk.Checkbutton(window,
                  text='C++',
                  variable=var2,
                  onvalue=1,
                  offvalue=0,
                  command=print_selection
                  )
c2.pack()
 
window.mainloop()