Stackable attributes in a function wrapper

wrapper.py

from functools import wraps

def autocomplete(key, complete_fn):
    def deco(f):
        @wraps(f)
        def wrapper(*args, **kwargs):
            return f(*args, **kwargs)
        
        if hasattr(wrapper, 'complete_fn'):  
            wrapper.complete_fn[key] = complete_fn
        else:
            wrapper.complete_fn = {key: complete_fn}  
        return wrapper
    return deco

@autocomplete('val1', list)
@autocomplete('val2', sum)
def some_fn():
    """some doc"""
    print('hi')
    
some_fn()
print(some_fn.complete_fn)
print(some_fn.__doc__)