Writing Systems of the World 7, Exercise 2: Devanagari vowel signs

Code (run with py -X utf8):

import unicodedata
for s in ["कु", "कू", "के"]:
    print(s, len(s), [unicodedata.name(c) for c in s])

Output from the run:

कु 2 ['DEVANAGARI LETTER KA', 'DEVANAGARI VOWEL SIGN U']
कू 2 ['DEVANAGARI LETTER KA', 'DEVANAGARI VOWEL SIGN UU']
के 2 ['DEVANAGARI LETTER KA', 'DEVANAGARI VOWEL SIGN E']

The same in each: the consonant letter KA, always first. What changes: only
the vowel sign that follows it (U, UU, E). That is the abugida idea in code:
one consonant symbol, plus a dependent vowel sign, stored as a separate code
point.