How to set date format in DatePicker bokeh

I m building a page with some chart using Bokeh and Python. I m using DatePicker to show a field to select a Date.

This is the code:

date_pickerStart = DatePicker(title='', value=dateStart, width=100)

now this field is displayed in the page and the user can select the date using the calendar. After set the date I can display it in the follow format: yyyy-mm-dd

I need to set another format or even better another language (italian language) and the format should be like this: dd-mm-yyyy

Is possible to do this?

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