# set_operators.py #

# set_operators.py
# Demonstrating set operations on unique letters from two strings

a = set('abracadabra')
b = set('alacazam')

print a             # unique letters in a               {'a', 'r', 'b', 'c', 'd'}
print a - b         # letters in a but not in b         {'r', 'd', 'b'}
print a | b         # letters in either a or b          {'a', 'c', 'r', 'd', 'b', 'm', 'z', 'l'}
print a & b         # letters in both a and b           {'a', 'c'}
print a ^ b         # letters in a or b but not both        {'r', 'd', 'b', 'm', 'z', 'l'}