How can a function access its own attributes?

Question

is it possible to access the python function object attributes from within the function scope?

e.g. let\'s have

def f():
    return          


        

Answer 1

Here's a decorator that injects current_fun into the functions globals before executing the function. It's quite the hack, but also quite effective.

from functools import wraps


def introspective(f):
    @wraps(f)
    def wrapper(*args, **kwargs):
        exists = 'current_fun' in f.func_globals
        old = f.func_globals.get('current_fun',None)
        f.func_globals['current_fun'] = wrapper
        try:
            return f(*args, **kwargs)
        finally:
            if exists:
                f.func_globals['current_fun'] = old
            else:
                del f.func_globals['current_fun']
    return wrapper

@introspective
def f():
    print 'func_dict is ',current_fun.func_dict
    print '__dict__ is ',current_fun.__dict__
    print 'x is ',current_fun.x

Here's a usage example

In [41]: f.x = 'x'

In [42]: f()
func_dict is  {'x': 'x'}
__dict__ is  {'x': 'x'}
x is  x

In [43]: g = f

In [44]: del f

In [45]: g()
func_dict is  {'x': 'x'}
__dict__ is  {'x': 'x'}
x is  x