Test of nonlocals functions

nonlocals.py

def nonlocals():
    import inspect
     stack = inspect.stack()
     if len(stack) < 3: return {}
     f = stack[2][0]
     res = {}
     while f.f_back:
         res.update({k:v for k,v in f.f_locals.items() if k not in res})
         f = f.f_back
     return res

def f():
    x = 3
    def g():
        print('x' in nonlocals())
    return g
  
f()()  # Prints True

def nonlocals():
    import inspect
    caller = inspect.currentframe().f_back
    return {k: v for k, v in caller.f_locals.items() if k in caller.f_code.co_freevars}

def f():
    x = 3
    def g():
        print('x' in nonlocals())
    return g
  
f()()  # Prints False