Can you define two lambda functions? Also, define two lists with four elements each.

Lambda functions are anonymous, one‑line functions in Python. Example 1: square = lambda x: x * x. Example 2: add = lambda a, b: a + b. For the lists, you can write: list_a = [1, 2, 3, 4] and list_b = ['a', 'b', 'c', 'd']. These satisfy the requirement of two lists each containing four elements.