[Tutor] Dictionary Question

[Jason N.]

Hello,
Wanted to ask if its possible to have a dictionary that can be looked up by either values?
For example, 
mydic = {"A: "Apple", "B": "Banana"}When user inputs "A" I want "Apple" to come. But if the user enter "Apple" I want "A" to respond.
Please let me know the best way to handle this type cause instead of just created duplicate entries to cover all possibilities. Thank you.