Django.db.models.functions missing almost all re-imports

[K0Te]

Initial error: "error: Module 'django.db.models.functions' has no attribute 'Coalesce'" has only: from django.db.models.functions has only one line: from .text import Lower as Lower`, while django has:

from .comparison import Cast, Coalesce, Greatest, Least, NullIf
from .datetime import (
    Extract, ExtractDay, ExtractHour, ExtractIsoYear, ExtractMinute,
    ExtractMonth, ExtractQuarter, ExtractSecond, ExtractWeek, ExtractWeekDay,
    ExtractYear, Now, Trunc, TruncDate, TruncDay, TruncHour, TruncMinute,
    TruncMonth, TruncQuarter, TruncSecond, TruncTime, TruncWeek, TruncYear,
)
from .math import (
    Abs, ACos, ASin, ATan, ATan2, Ceil, Cos, Cot, Degrees, Exp, Floor, Ln, Log,
    Mod, Pi, Power, Radians, Round, Sin, Sqrt, Tan,
)
from .text import (
    Chr, Concat, ConcatPair, Left, Length, Lower, LPad, LTrim, Ord, Repeat,
    Replace, Reverse, Right, RPad, RTrim, StrIndex, Substr, Trim, Upper,
)
from .window import (
    CumeDist, DenseRank, FirstValue, Lag, LastValue, Lead, NthValue, Ntile,
    PercentRank, Rank, RowNumber,
)

[mkurnikov]

All 2.1.6 reimports are present now.
https://github.com/mkurnikov/django-stubs/blob/master/django-stubs/db/models/functions/__init__.pyi