How to convert letters to numbers using python -

i want convert letters numbers along special characters , numbers remaining is.

code:

input = raw_input('insert string: '); output = []; character in input:     number = ord(character) - 96;     output.append(number);  print output;

i can convert alphabets letters, when input numbers, it's showing negative numbers.

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any suggestions? in advance!

i guessing code using , other link gave in question -

print [ord(char) - 96 char in raw_input('write text: ').lower()]

this , found out in example, convert characters unicode counterparts,if not want want convert numbers can use following -

>>> print ''.join([str(ord(ch) - 96) if ch.isalpha() else ch ch in raw_input('write text: ').lower()]) write text: abcd123 @!#as1 1234123 @!#1191

Alconcel