i need help with Python Question! note i need to use the return statement

Given a list of ints, return true if the number 1 appears exactly once in the list.and the number 2 appears exactly twice in the list. hasOneOneTwoTwos ([1,2,4,6,2,4,7]) True hasOneOneTwoTwos ([3,1,6,6,7,5,1,2]) False hasOneOneTwoTwos ([2,2,1]) True Save, Compile, Run (ctrl-enter)