使用Exec在Python中设置按钮图像 - 有更好的方法吗？

发布于 2025-01-28 21:08:53 字数 774 浏览 1 评论 0原文

我正在为TKINTER编写Python代码，以为四个不同按钮设置各种图像。我将四个整数为0-3的方法发送到该方法，并根据此列表将四个按钮的图像设置为图像btn_img_a0，a1，a2，a2，a3（等）。如果/elif语句涵盖所有可能性，我可以写16张，但是我这样做了：

def set_btn_status():  #changes the buttons to reflect button_status
    global button_status
    image_for_A = 'btn_img_A' + str(button_status[0])
    exec ('button_A.configure(image = '+image_for_A+')')
    image_for_B = 'btn_img_B' + str(button_status[1])
    exec ('button_B.configure(image = '+image_for_B+')')
    image_for_C = 'btn_img_C' + str(button_status[2])
    exec ('button_C.configure(image = '+image_for_C+')')
    image_for_D = 'btn_img_D' + str(button_status[3])
    exec ('button_D.configure(image = '+image_for_D+')')

我告诉我使用Exec是有风险的，但是这将代码削减到8行而不是16行，而且工作正常 - 这是合理的，还是在那里更好的方法？

原文

I'm writing a Python code for tkinter to set various images for four different buttons. I send to the method a list of four integers, 0-3, and it sets the image of the four buttons to image btn_img_A0, A1, A2, A3 (etc for the others) based on this list.
I could write 16 if/elif statements to cover all possibilities, but I did this:

def set_btn_status():  #changes the buttons to reflect button_status
    global button_status
    image_for_A = 'btn_img_A' + str(button_status[0])
    exec ('button_A.configure(image = '+image_for_A+')')
    image_for_B = 'btn_img_B' + str(button_status[1])
    exec ('button_B.configure(image = '+image_for_B+')')
    image_for_C = 'btn_img_C' + str(button_status[2])
    exec ('button_C.configure(image = '+image_for_C+')')
    image_for_D = 'btn_img_D' + str(button_status[3])
    exec ('button_D.configure(image = '+image_for_D+')')

I'm told that using exec is risky, but this cuts the code to 8 lines instead of 16 and works fine - is this reasonable, or is there a better way??

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