User input of dates in python

How can I ask the user to enter a date in the PY and automatically show the slash for him on the same line? How to have the field separators (slashes) appear prior to the typing.

Something like:

Insert your birthday: 20/01/1991 # input (‘Insert your birthday:’)

User writes only ’20’, ’01’ and ‘1991’.

As if you had 3 inputs appearing on the same line. Is it possible? Maybe with another command.