import datetime as dt
import panel as pn

pn.extension()

datetime_range_input = pn.widgets.DatetimeRangeInput(
    name='Datetime Range Input',
    start=dt.datetime(2017, 1, 1), end=dt.datetime(2019, 1, 1),
    value=(dt.datetime(2017, 1, 1), dt.datetime(2018, 1, 10)),
    width=300
)

datetime_range_input

datetime_range_input.value

pn.Row(datetime_range_input.controls(jslink=False), datetime_range_input)