What does & mean in python

Question

Hi I came across the following code

numdigits = len(cardNumber)
oddeven = numdigits & 1

what exactly is going on here? I\'m not sure wh

Answer 1

In addition, & is also used for taking the intersection of two Python sets:

set1 = {0,1,2,3}
set2 = {2,3,4,5}
print(set1 & set2)
>>>set([2, 3])