The is operator checks whether two variables refer to the same object in memory. a = [1, 2, 3] b = a c = [1, 2, 3]. print(a is b) # True: a and b are the same object print(a is c) # False: c is a ...

Any object can be tested for truth value, for use in an if or while condition or as operand of the Boolean operations below. By default, an object is considered true unless its class defines either a ...