MDDatePicker
Designed to be called from Python code only
Create class: self.<date_picker> = MDDatePicker()
Bind the OK button to a callback (passes in the time): self.<date_picker>.bind(date=self.get_date)
You can set the date that it opens to in two ways:
By passing three integers (for year, month and day):
self.\<date_picker\>.set_date_str(day, month, year)
By passing in a datetime.date object
self.<date_picker>.set_date(<datetime.date object>)
To open: self.<date_picker>.open()