首页 > 解决方案 > 带有 If Else 语句的 Python Tkinter 按钮

问题描述

我想Start_Button用 2 个可能的功能绑定:

如果Choice_1_Button单击然后Start_ButtonStart_Button则应调用foo1。但是当用户点击时Choice_2_Button,同样Start Button应该调用foo2.

这是我目前拥有的代码:

from tkinter import *
root=Tk()
Choice_1_Button=Button(root, text='Choice 1', command=something) #what should it do?
Choice_2_Button=Button(root, text='Choice 2', command=something_else)
Start_Button=Button(root, text='Start', command=if_something) #and what about this?

有谁知道something,应something_else该做什么if-something

标签: pythonif-statementbuttontkinter

解决方案


以下代码跟踪他们按下的内容:

choice=None
def choice1():
    global choice
    choice='Choice 1'
def choice2():
    global choice
    choice='Choice 2'
def start():
    global choice
    if choice=='Choice 1':
        foo1()
    elif choice=='Choice 2':
        foo2()
    else:
        #do something else since they didn't press either

choice1作为 的命令Choice_1_Buttonchoice2作为 的 命令Choice_2_Buttonstart的传递Start_Button

如果你想使用单选按钮,它会更容易:

def start(choice):
    if choice=='Choice 1':
        foo1()
    elif choice=='Choice 2':
        foo2()
    else:
        #do something else since they didn't press either
var=StringVar(root)
var.set(None)
Radiobutton(root, text='Choice 1', value='Choice 1', variable=var).pack()
Radiobutton(root, text='Choice 2', value='Choice 2', variable=var).pack()
Button(self.frame, text='Start', command=lambda: start(var.get())).pack()

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