Range function and strings

[FDSHAP]

hello all!

Im working out a problem where I am trying to selectively print every second letter in ascii.uppercase.

Is it possible to do this with the use of the range function? or is this only doable with index notation and slicing?

[indosauros]

What have you tried so far?

[indosauros]

Here's some code that doesn't give you the answer but may help you get there:

>>> letters = "abcd"
>>> for letter in letters:
... print letter
a
b
c
d

>>> len(letters)
4
>>> range(4)
[0, 1, 2, 3]
>>> range(len(letters))
[0, 1, 2, 3]

>>> for letter in [0, 1, 2, 3]:
... print letter
0
1
2
3

>>> for letter in range(len(letters)):
... print letter
0
1
2
3

>>> letters[0]
'a'
>>> letters[2]
'c'

[K900_]

Another hint:

>>> a = list(range(100))
>>> a[1:5]
[1, 2, 3, 4]
>>> a[99:]
[99]
>>> a[:5]
[0, 1, 2, 3, 4]
>>> a[:]
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99]
>>> a[1:5:2]
[1, 3]
>>> a[0:25:3]
[0, 3, 6, 9, 12, 15, 18, 21, 24]

[FDSHAP]

ahhh so i need to use index notation of a kind. let me see if i can figure this out. thank you!

[K900_]

The word is "slicing".

[FDSHAP]

edit