python - 如何在 Tkinter 中使用 Button 设置功能参数？

Question

我想创建一个函数，它将从按钮单击中获取参数。例如：

from Tkinter import *

def func(b):
    number = 2*b
    print number
    return

root=Tk()

# By clicking this button I want to set b = 1 and call func

b1 = Button(root,...)
b1.pack()

# By clicking this button I want to set b = 2 and call func

b2 = Button(root,...)
b2.pack()

root.mainloop()

所以点击 b1 后，“number”应该是 2，点击 b2 后，“number”应该是 4。

我希望我能很好地解释我的问题。

感谢您的回答

末日挂载

Answer 1

这是一种方法

from sys import stderr
from Tkinter import *

def func(b):
    number = 2*b
    stderr.write('number=%d\n'%number)
    return

root=Tk()

# By clicking this button I want to set b = 1 and call func

b1 = Button(root,command=lambda : func(1))
b1.pack()

# By clicking this button I want to set b = 2 and call func

b2 = Button(root,command=lambda : func(2))
b2.pack()

root.mainloop()