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Incorrect plural forms of words ending with 'us'.

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
42/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
python
Domain
backend

Research direction

Start with the pluralize and singularize entry points and reproduce the supplied examples for focus, cactus, fungus, nucleus, and syllabus. The fix is done when pluralize returns cacti, nuclei, and syllabi and singularize('fungi') returns 'fungus', with the related -us/-i cases handled consistently.

Written by the indexing model from the issue text.

Description

Some words which end with -us that have plural forms with -i are giving incorrect results.

>>> word_list = ['focus','cactus','fungus','nucleus','syllabus']
>>> for w in word_list:
...     print(pluralize(w))
...
foci
cactuss
fungi
nucleuss
syllabuss

Should be cacti, nuclei and syllabi respectively. There are enough words of this sort that can form a group. The singularize function also converts incorrectly.

>>> singularize('fungi')
'fungi'
Dominant language
Python
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