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

There is a clean way to do what you want without using global variable. If you want to be stateless and threads safe, you don't really have the choice.

Use the "kwargs" variable:

c = 'Message'

def decorator_factory(value):
    def msg_decorator(f):
    def inner_dec(*args, **kwargs):
        kwargs["var"] = value
        res = f(*args, **kwargs)
        return res
    return inner_dec
return msg_decorator

@decorator_factory(c)
def msg_printer(*args, **kwargs):
    print kwargs["var"]

msg_printer()