List MembershipΒΆ
in and not in are boolean operators that test membership in a sequence. We
used them previously with strings and they also work here.
Check your understanding
- True
- Yes, 'cat' is an item in the list alist.
- False
- There are 5 items in the list, 'cat' is one of them.
rec-5-1: What is printed by the following statements?
alist = [3, 67, "cat", 3.14, False]
print("cat" in alist)
- True
- "at" is in "cat", but it is not in alist
- False
- Yes, "at" is not in the top level item, alist. It is in one of the elements of alist.
rec-5-2: What is printed by the following statements?
alist = [3, 67, "cat", 3.14, False]
print("at" in alist)