按钮命令参数不工作

Question

我有这个程序有问题的命令不工作时，我按下按钮

from Tkinter import * 
import random 
MenuP = Tk() 
MenuP.geometry("540x960") 

def Respuesta1(a): 
    if a == 1: 
     resp = random.randint(0,4) 
     if resp == 0: 
      r = 3 
     elif resp == 1 or resp == 2: 
      r = 5 
     else: 
      r = 7 
    if a == 2: 
     resp = random.randint(0,4) 
     if resp == 0: 
      r = 1 
     elif resp == 3 or resp == 2: 
      r = 5 
     else: 
      r = 3 
    print r 

C1 = Button(MenuP, text = "1", command = Respuesta1(1)).place(x = 100,y = 100) 
C2 = Button(MenuP, text = "2", command = Respuesta1(2)).place(x = 300,y = 100) 
MenuP.mainloop() 

发生的事情是，打印张数之前，我按下按钮，当程序开始。如果有人知道，请回答。由于

Answer 1

您需要更改下面几行：

C1 = Button(MenuP, text = "1", command = Respuesta1(1)).place(x = 100,y = 100) 
C2 = Button(MenuP, text = "2", command = Respuesta1(2)).place(x = 300,y = 100) 

要这样：

C1 = Button(MenuP, text = "1", command = lambda: Respuesta1(1)) 
C1.place(x = 100,y = 100) 
C2 = Button(MenuP, text = "2", command = lambda: Respuesta1(2)) 
C2.place(x = 300,y = 100) 

通过使用lambda功能，您可以通过所需的变量函数，而不在调用它开始。它被直接称为Tkinter评估您通过的内容为command。