Expression Description
x == y x equals y.
x < y x is less than y.
x > y x is greater than y.
x >= y x is greater than or equal to y.
x <= y x is less than or equal to y.
x != y x is not equal to y.
x is y x and y are the same object.
x is not y x and y are different objects.
x in y x is a member of the container (e.g., sequence) y.
x not in y x is not a member of the container (e.g., sequence) y.