On Wed, May 26, 2021 at 10:31 PM Shreyan Avigyan
<pythonshreya...@gmail.com> wrote:
>
> Reply to Paul Moore:
>
> if some_condition:
> constant a = 1
> else:
> a = 2
> a = 3
>
> Yes this is allowed. This is runtime.
>
> for i in range(10):
> constant a = []
>
> Not sure. Though it's preferable to be runtime. Preferable is "not allowed".
>
> And lists are also literals. Any Python Object that is not assigned to a
> variable is a literal. Python claims that itself. A preview -
>
> [10] = [2]
> SyntaxError: Can't assign to literal here.
The literal that you can't assign to here is "10". You're perfectly
allowed to assign to a list display:
[x, y, z] = range(3)
> Constants should have a similar error -
>
> constant x = 10
> x = [2]
> SomeErrorType: Can't assign to constant here.
Is it a syntax error? Be VERY specific here. It makes a huge difference.
Also, what about this:
constant x = 10
def f():
x = 20
SyntaxError? Runtime error? Shadowing?
This is important and cannot be brushed aside.
ChrisA
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