replace_alphabet_pos.py

# Welcome.

# In this kata you are required to, given a string, replace every letter 
# with its position in the alphabet.

# If anything in the text isn't a letter, ignore it and don't return it.

# a being 1, b being 2, etc.

# As an example:

# alphabet_position("The sunset sets at twelve o' clock.")

# Should return "20 8 5 19 21 14 19 5 20 19 5 20 19 1 20 20 23 5 12 22 5 15 3 12 15 3 11" as 
# a string.
def alphabet_position(string):
	result = ''
	for i in list(string.lower()):
		if ord(i) in range(97,123):
			result += str(ord(i) - 96)+' '	#	97..123

	return result[:-1]