Support for pl.List('*')

[bobir01]

Support for pl.List('*')

[stinodego]

Passing pl.List to the by_dtype selector should work. I'll classify this as a bug. Thanks for the report!

The difficulty here is that, on the Rust side, we don't really have the notion of a generic uninstantiated List type.

[bobir01]

@stinodego , this issue is happening with datetime too ;(

[cmdlineluser]

For datetimes specifically, there is the dedicated .datetime() selector.

cs.by_dtype(pl.Datetime).meta.serialize()
# {'DtypeColumn':[{'Datetime':['Microseconds',null]}]}

cs.datetime().meta.serialize()
# {'DtypeColumn': [{'Datetime': ['Milliseconds', '*']},
#  {'Datetime': ['Milliseconds', None]},
#  {'Datetime': ['Microseconds', '*']},
#  {'Datetime': ['Microseconds', None]},
#  {'Datetime': ['Nanoseconds', '*']},
#  {'Datetime': ['Nanoseconds', None]}]}

It uses * to wildcard timezones, and None for the no timezone case.

It also has to do it for each possible time_unit.

The chat in #13683 may be relevant.

[bobir01]

For datetimes specifically, there is the dedicated .datetime() selector

@stinodego ohh i was using pl.Datetime therefore i might missed this Thank you i didnt now about cs.datetime()