Pypy

better than cpython and cython if you are looking for faster code execution.
but it's a pain in the ass when you try to use common libraries like TF
and matplotlib. it takes forever to download and install the packages.

Pypy

list1 = ['Scott', 'Eric', 'Kelly', 'Emma', 'Smith']
list2 = ['Scott', 'Eric', 'Kelly']

set1 = set(list1)
set2 = set(list2)

list3 = list(set1.symmetric_difference(set2))
print(list3)

-5

Source: pynative.com

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