python - Is there a way to convert a variable that can be either a datetime or a date to a date? -

i have function can accept date or datetime 1 of arguments. if value datetime, convert date components. pythonic way of doing that?

since datetime objects are date objects, should able call date functions on datetime , have work.

but if must:

if isinstance(param_date, datetime.datetime):      param_date = param_date.date()

will normallize datetime , date objects date objects... have deal them, date objects not datetime objects:

>>> isinstance(datetime.date.today(), datetime.datetime) false

note: reverse not applicable:

>>> isinstance(datetime.datetime.now(), datetime.date) true

as datetime inherits date.

MOno