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Find the position
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
What do these three lines show? Say it before you run it.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Plan. index() gives the position of the first item that matches. count() says how many times it occurs.
letters.index("d"): the list is b (0), a (1), d (2), a (3), c (4). Sodis at position 2.letters.index("a"): the firstais at position 1. The secondaat position 3 is not reported.letters.count("a"): two items area, so the answer is 2.
Check. Run the program. If you ask for letters.index("z"), Python stops with a ValueError, because z is not in the list.
Answer: 2, 1 and 2.
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