Digify 0.2

Convert spelled numbers such as ‘one thousand, two hundred and thirty-three’ or ‘one thousand two hundred thirty three’ to their equivalent forms in digits (1233).

Handles British-style “and” as well as US versions without “and”, and accepts commas and hyphens in appropriate positions (although they are never compulsory)

>>> spelled_num_to_digits("one")
1
>>> spelled_num_to_digits("twelve")
12
>>> spelled_num_to_digits("seventy-two")
72
>>> spelled_num_to_digits("Three hundred")
300
>>> spelled_num_to_digits("TWELVE HUNDRED")
1200
>>> spelled_num_to_digits("twelve thousand three hundred four")
12304
>>> spelled_num_to_digits("twelve thousand, five hundred and six")
12506
>>> spelled_num_to_digits("six   Million")
6000000
>>> spelled_num_to_digits("six million four hundred thousand five")
6400005
>>> spelled_num_to_digits(
...   'one hundred twenty three billion, four hundred fifty six million, '
...   'seven hundred eighty nine thousand twelve')
123456789012
>>> spelled_num_to_digits("four decillion")
4000000000000000000000000000000000L

>>> replace_spelled_numbers('There are TEN sponges')
'There are 10 sponges'
>>> replace_spelled_numbers('I got ninety nine problems')
'I got 99 problems'
>>> replace_spelled_numbers('He got two million, one hundred and '
...   'eighty-two thousand, three hundred and twenty five problems')
'He got 2182325 problems'
>>> replace_spelled_numbers('I have five coconuts and two hundred '
...   'thirty three carrots')
'I have 5 coconuts and 233 carrots'

Adapted and extended from https://github.com/ghewgill/text2num