Index error for particular inputs Eg. "thousand"

[Apaar]

When we input stuff like only 'thousand', 'million', 'billion' it gives a list index error.Strangely does not happen for just 'hundred'.

One sample error -

i=w2n.word_to_num('billion')
Traceback (most recent call last):
File "", line 1, in
File "/home/anaconda3/lib/python3.6/site-packages/word2number/w2n.py", line 178, in word_to_num
billion_multiplier = number_formation(clean_numbers[0:billion_index])
File "/home/anaconda3/lib/python3.6/site-packages/word2number/w2n.py", line 104, in number_formation
return numbers[0]
IndexError: list index out of range

[akshaynagpal]

@Apaar
Thanks for pointing this out. I will look into this ASAP.
Meanwhile, you're also welcome to fix the error and submit a Pull Request. If it passes all the tests, it will be merged most probably.

[lhami]

The issue as stated is solved, but there are some related issues still existing. Writing something like "million and one" will throw an index error:

w2n.word_to_num("thousand and one")
Traceback (most recent call last):
File "", line 1, in
w2n.word_to_num("thousand and one")
File "c:\users\leah\appdata\local\programs\python\python37\lib\site-packages\word2number\w2n.py", line 197, in word_to_num
thousand_multiplier = number_formation(clean_numbers[0:thousand_index])
File "c:\users\leah\appdata\local\programs\python\python37\lib\site-packages\word2number\w2n.py", line 104, in number_formation
return numbers[0]
IndexError: list index out of range

And for some reason "hundred and three" gets read as 300.

For the moment, I've fixed this in my personal code by checking for hundred/thousand/million/billion at the start of a string and putting "one " in front before the conversion. If that's an acceptable solution, I could incorporate this fix in the package itself.