["python","nlp","nltk","ordinals"]
Ordinal numbers replacement

I am currently looking for the way to replace words like first, second, third,...with appropriate ordinal number representation (1st, 2nd, 3rd). I have been googling for the last week and I didn't find any useful standard tool or any function from NLTK. So is there any or should I write some regular expressions manually? Thanks for any advice
The package number-parser can parse ordinal words ("first", "second", etc) to integers. from number_parser import parse_ordinal n = parse_ordinal("first") To convert an integer to "1st", "2nd", etc, you can use the following: def ordinal(n: int): if 11 <= (n % 100) <= 13: suffix = 'th' else: suffix = ['th', 'st', 'nd', 'rd', 'th'][min(n % 10, 4)] return str(n) + suffix Here is a more terse but less readable version (taken from Gareth on codegolf): ordinal = lambda n: "%d%s" % (n,"tsnrhtdd"[(n//10%10!=1)*(n%10<4)*n%10::4]) This works on any number: print([ordinal(n) for n in range(1,32)]) ['1st', '2nd', '3rd', '4th', '5th', '6th', '7th', '8th', '9th', '10th', '11th', '12th', '13th', '14th', '15th', '16th', '17th', '18th', '19th', '20th', '21st', '22nd', '23rd', '24th', '25th', '26th', '27th', '28th', '29th', '30th', '31st']