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" = 1`, `"b" = 2`, etc.
## Example
```python
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(s):
  return " ".join(str(ord(c)-ord("a")+1) for c in s.lower() if c.isalpha())

def alphabet_position(s):
  return " ".join(str(ord(c)-ord("a")+1) for c in s.lower() if c.isalpha())
