How to get the closure environment in Python?

[Yuan Cao]

On Thu, Apr 28, 2016 at 12:23 PM, Jin Li <lijin.abc at gmail.com> wrote:

> Hi all,
>
> I want to get the closure environment in Python. As in the following
> example:
>
> def func1():
>         x = 10
>         def func2():
>                 return 0
>
>         return func2
>
> f=func1()
> print f()
>
>
> How could I get the variable `x` in the environment of `func2()`? i.e.
> `f()`.
>
> Best regards,
> Jin
> --
> https://mail.python.org/mailman/listinfo/python-list



Hello,

You can sort of look into the underlying code by using __code__, and it's
associated methods.

I was able to get the variable names with:

print(funct1.__code__.co_varnames).

I was sort of able to get to the value 10 with:

print(func1.__code__.co_consts).

This way seems pretty messy. Other people probably have more elegant ways
of doing this.

I hope this helps.

Best Regards,

Yuan