[英]Python - Change a function parameter even if it's global
I've made a function that I want to use to change a variable, this variable also happens to be global.我已经创建了一个函数,我想用它来更改一个变量,这个变量也恰好是全局的。
def CheckMarkFunc(var):
if var == True:
var= False
elif var == False:
var= True
If var is a global, it wont change.如果 var 是一个全局变量,它不会改变。 Is there a way to change the var without having to hardcode the global parameter (sound_mute, in this case) into the function itself?
有没有办法改变 var 而不必将全局参数(在本例中为 sound_mute)硬编码到函数本身中?
The code below works, but I'd rather not have multiple if statements for each global variable that I want to change, if at all possible:下面的代码有效,但如果可能的话,我宁愿不要为我想要更改的每个全局变量设置多个 if 语句:
def CheckMarkFunc(var,button_id,uncheck_texture,checked_texture):
global sound_mute
if var == True:
TextureSwap(uncheck_texture,button_id)
sound_mute = False
if var == False:
sound_mute = True
TextureSwap(checked_texture,button_id)
In both of these cases, the var parameter is the sound_mute
boolean.在这两种情况下,var 参数都是
sound_mute
布尔值。
One option is as follows:一种选择如下:
def CheckMarkFunc(var, button_id, uncheck_texture, checked_texture):
if var:
TextureSwap(uncheck_texture, button_id)
else:
TextureSwap(checked_texture, button_id)
return not var
sound_mute = CheckMarkFunc(sound_mute, button_id, uncheck_texture, checked_texture)
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