You might use them with sets:
a = {1, 2, 3}
b = {2, 3, 4}
a | b # {1, 2, 3, 4}
a & b # {2, 3}
a ^ b # {1, 4}
a - b # {1}
b - a # {4}
You might use them with sets:
a = {1, 2, 3}
b = {2, 3, 4}
a | b # {1, 2, 3, 4}
a & b # {2, 3}
a ^ b # {1, 4}
a - b # {1}
b - a # {4}