L = ["Hello", "World", 18, "Apple", None]
L2 = [n.lower() for n in [n for n in L if isinstance(n, str)]]
Sign in to make a reply
八分钟不能再长了
L = ["Hello", "World", 18, "Apple", None]
L2 = [n.lower() for n in [n for n in L if isinstance(n, str)]]