Python's “in” set operator

Question

I\'m a little confused about the python in operator for sets.

If I have a set s and some instance b, is it true that b i

Answer 1

Strings, though they are not set types, have a valuable in property during validation in scripts:

yn = input("Are you sure you want to do this? ")
if yn in "yes":
    #accepts 'y' OR 'e' OR 's' OR 'ye' OR 'es' OR 'yes'
    return True
return False

I hope this helps you better understand the use of in with this example.