Dates
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.. contents:: :local:


Introduction
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The ``date`` data type is a **non built-in data type**, but part of the standard library. Thus, to be able to use it, it has to be imported first.  


Exercise 1 - Calculating the duration between dates
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.. interactive_code_block:: 
   :caption: Calculate the duration in days between two dates

   from datetime import date

   release_date = date(1991, 2, 20)  # Release date of the first version of Python
   
   today = date.today()

   duration = today - release_date

   print('The first version of Python has been released {} days ago.'.format(duration.days))


Exercise 2 - Calculating the sum of a date and a duration
---------------------------------------------------------

.. interactive_code_block:: 
   :caption: Calculate the sum of a date and a duration

   from datetime import date, timedelta

   release_date = date(1991, 2, 20)  # Release date of the first version of Python
   
   duration = timedelta(days = 10_000)

   calculated_date = release_date + duration

   print('On {} the first version of Python has been released {} days ago.'.format(calculated_date, duration.days))