How could I print out the nth letter of the alphabet in Python?

chr and ord convert characters from and to integers, respectively. So:

chr(ord('a') + 5)

is the letter 'f'.

chr(ord('a')+5)

^{​​​​​​​​​​​​​​​​​​​}

ASCII math aside, you don't have to type your letters table by hand. The string constants in the string module provide what you were looking for.

>>> import string
>>> string.ascii_uppercase[5]
'F'
>>>