tkinter之checkbutton

from tkinter import *

root = Tk() # 创建窗口

root.title('Test')  # 设置标题
root.geometry('600x300')    #设置窗口大小

l1 = Label(root, text='', bg='yellow', fg='red', width=30, height=1) # 创建标签
l1.pack()


def print_selection():
    if var1.get()==1 and var2.get()==1:
        l1.config(text='I love both')
    elif var1.get()==0 and var2.get()==1:
        l1.config(text='I love java')
    elif var1.get() == 1 and var2.get() == 0:
        l1.config(text='I love python')
    else:
        l1.config(text='I love neither')
    pass


var1 = IntVar()
var2 = IntVar()
cb1 = Checkbutton(root, text='python', variable=var1, onvalue=1,
                  offvalue=0, command=print_selection)
cb2 = Checkbutton(root, text='java', variable=var2, onvalue=1,
                  offvalue=0, command=print_selection)
# onvalue=1 选中时返回1， offvalue=0 未选中时返回0
cb1.pack()
cb2.pack()
root.mainloop()