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Python Python Collections (2016, retired 2019) Tuples Packing

Is there a generator expression solution to multiply() ?

Hi all. I'm working hard to become an intermediate Python programmer. I've received tons of love and support along the way. Thank you all :)

Question: would there be a generator expression approach to this code challenge? I've tried but I don't know where to get started.

Here's some background:

Regarding using reduce, one of the reasons it have been moved from a builtin function to being part of functools, is because it wasn't found to be superior to using a for loop. According to the Python 3 release notes:

"Removed reduce(). Use functools.reduce() if you really need it; however, 99 percent of the time an explicit for loop is more readable."

Thank you all!

twoples.py
from functools import reduce
from operator import mul

def multiply(*args):
    return reduce(mul, args)

2 Answers

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,064 Points

In short, there is not one I know of. There has been discussion to add a sum() analog called mult() but it hasn't gotten traction.

If a short brew-your-own solution isn't viable via a loop (or yes functools.reduce()), you can use numpy.prod if needed.

Once again, numpy saves the day! :) much appreciated, as always, Chris