有 “tkinter-variable” tkinter 方法参数和字符串 tkinter 方法参数之间有区别吗?

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英文:

Is there a difference between "tkinter-variable" tkinter methods arguments and string tkinter methods arguments?

问题

我想知道像tkinter.DISABLED和'disabled'之类的东西之间是否有任何区别,或者tkinter.ALL和'all'之间是否有任何区别。

所以我想这样清除我的tkinter画布:

canvas0.delete('all')

但后来我尝试了:

canvas0.delete(tkinter.ALL)

它的效果相同,那么这两个函数之间有任何区别吗?

英文:

I want to know if there is any difference between something like tkinter.DISABLED and 'disabled', or tkinter.ALL and 'all'.

So I wanted to clear my tkinter canvas like this:

canvas0.delete('all')

But then I tried:

canvas0.delete(tkinter.ALL)

And it worked the same, so is there ANY difference between these two functions?

答案1

得分: 2

Tkinter定义了许多常量之一是tkinter.ALL = 'all'

因此,它们本质上是相同的。

英文:

Tkinter defines a number of constants, one of which is tkinter.ALL = 'all'

So they are essentially the same.

答案2

得分: -1

在情况下,"canvas0.delete('all')" 和 "canvas0.delete(tkinter.ALL)",在功能上没有区别。两种方法都实现了在 tkinter 中清除画布上的所有项目的相同结果。

tkinter 画布小部件的 "delete" 方法用于从画布中删除一个或多个项目。它接受指定要删除的项目的参数。此参数可以是字符串或在 "tkinter" 模块中定义的常量。

例如,当您将 "'all'" 作为参数传递时,表示应删除画布上的所有项目。类似地,"tkinter.ALL" 是在 "tkinter" 模块中定义的常量,它表示字符串 "'all'"。因此,使用 "tkinter.ALL" 作为参数与传递 "'all'" 具有相同的效果。

"canvas0.delete('all')" 和 "canvas0.delete(tkinter.ALL)" 都会清除画布上的所有项目。

值得注意的是,在某些情况下,使用常量 "tkinter.ALL" 可以提供更好的代码可读性和可维护性。这使得代码更具自解释性,特别是在使用多个 tkinter 模块或其他开发人员阅读或维护您的代码时。

英文:

In the case of "canvas0.delete('all')" and "canvas0.delete(tkinter.ALL)", there is no difference in functionality. Both methods achieve the same result of clearing all items from the canvas in tkinter.

The "delete" method of the tkinter Canvas widget is used to remove one or more items from the canvas. It accepts an argument specifying the item or items to be deleted. This argument can be a string or a constant defined in the "tkinter" module.

For example, when you pass "'all'" as the argument, it indicates that all items on the canvas should be deleted. Similarly, "tkinter.ALL" is a constant defined in the "tkinter" module, and it represents the string "'all'". So, using "tkinter.ALL" as the argument has the same effect as passing "'all'".

Both "canvas0.delete('all')" and "canvas0.delete(tkinter.ALL)" will clear all items from the canvas.

It's worth noting that using the constant "tkinter.ALL" can provide better code readability and maintainability in some cases. It makes the code more self-explanatory, especially when working with multiple tkinter modules or when other developers are reading or maintaining your code.

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  • 本文由 发表于 2023年7月3日 19:35:51
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