plural.py

def plural( n, s ):
    '''returns one of three s[] depends on number
        [1-час,234-часа,5-часов,]
    '''
    n = abs(n)
    if n in (11,12,13,14):
        return s[2]
    n = n % 10
    if n == 1:
        return s[0]
    if n in (2,3,4):
        return s[1]
    return s[2]
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