Answer 1

Does this answer your question?
https://stackoverflow.com/questions/31447694/why-does-JUMP_LINK__&&__python__&&__JUMP_LINK-3-allow-00-as-a-literal-for-0-but-not-allow-01-as-a-literal

Answer 2

I think you didn't get what I mean.
This is the problem of python not your code.
Ever try something like this?
print(01+05)

Go and see the output.
It's the same thing!