Why is the output c and d

Question

i expect the putput to be c and e.
x = ("a", "b", "c", "d", "e")
print x[2:4]

Answer 1

because computers start counting from zero(0) so x[2:4] means start at 2 all the way to 4 but NOT including 4.
"a" at index [0]
"b" at index [1]
"c" at index [2]------> start
"d" at index [3]-----> middle
"e" at index[4]------> end (not including index 4)

To print c to d you need to do :
print(x[2:5]

Answer 2

crystal clear thank you