How to inject variable into scope with a decorator?

Question

[Disclaimer: there may be more pythonic ways of doing what I want to do, but I want to know how python\'s scoping works here]

I\'m trying to find a way to make a dec

Answer 1

Update __globals__ works for me.

def f():
    print(a)


def with_context(**kw):
    def deco(fn):
        g = fn.__globals__
        g.update(kw)
        return fn

    return deco


with_context(a=3)(f)() # 3