that was a really smart way to using re.split ,bypassed a great deal of punctuation handling

nice work

i was maded the same mistake as you do, after desperately retring still failed ,i checked the solutions
then i found ,i was misunderstood the question .
the make_lazy function should return the function modding(*arg) itself ,but not the result of modding(*arg).
it's quite different .
this is why you got the error "TypeError: 'int' object is not callable":
you code:

def make_lazy(f, *args):
return f(*args)

this above of code return the result of modding(4,4) ,which is 0 ,that is a number.
but the Test program expected the first arg is the function .
so the test code will like this

0()

so the type error occured .

this solution is best for the beginer to understand how to resove this problem