如何将参数传递给 Tkinter 按钮的回调命令? [英] How can I pass arguments to Tkinter button's callback command?

问题描述

我有 2 个按钮，分别命名为ButtonA"、ButtonB".如果单击任何按钮，我希望程序打印hello, ButtonA"和hello, ButtonB".我的代码如下:

I got 2 buttons, respectively named 'ButtonA', 'ButtonB'. I want the program to print 'hello, ButtonA' and 'hello, ButtonB' if any button is clicked. My code is as follows:

def sayHi(name):
    print 'hello,', name

root = Tk()
btna = Button(root, text = 'ButtonA', command = lambda: text)
btna.pack()

当我点击ButtonA时，发生错误，text not defined.

When I click ButtonA, error occurs, text not defined.

我理解这个错误，但我如何将 ButtonA 的文本传递给 lambda?

I understand this error, but how can I pass ButtonA's text to lambda?

推荐答案

这应该有效:

...
btnaText='ButtonA'
btna = Button(root, text = btnaText, command = lambda: sayHi(btnaText))
btna.pack()

有关更多信息，请查看 Tkinter 回调

For more information take a look at Tkinter Callbacks

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