python - Elegant way to perform tuple arithmetic

Question

What is the most elegant and concise way (without creating my own class with operator overloading) to perform tuple arithmetic in Python 2.7?

Lets say I have two tuples:

a = (10, 10)
b = (4, 4)

My intended result is

c = a - b = (6, 6)

I currently use:

c = (a[0] - b[0], a[1] - b[1])

I also tried:

c = tuple([(i - j) for i in a for j in b])

but the result was (6, 6, 6, 6). I believe the above works as a nested for loops resulting in 4 iterations and 4 values in the result.

Answer 1

If you're looking for fast, you can use numpy:

>>> import numpy
>>> numpy.subtract((10, 10), (4, 4))
array([6, 6])

and if you want to keep it in a tuple:

>>> tuple(numpy.subtract((10, 10), (4, 4)))
(6, 6)