Fidelity
========

A bank has a system for customer's loyalty. The system awards a
customer with points which are based on the amount of each purchase of
his/her credit card. Each month, the customer receives a notification
with the accumulated number of points which can be exchanged for
gifts. Points are given according to these criteria:

- for an amount less than € 10: 1 point
- for an amount greater than or equal to € 10: 3 points for
  every € 5 

An amount of € 1000 or more has an additional bonus of 50 points.

Save the two following functions into a file named ``fidelity.py``.

#. Write the function :py:func:`compute_points` that takes a purchase
   amount (float), and returns the correspondig number of points
   (integer).

   See the following examples:
   
   .. literalinclude:: compute_points.txt
      :language: python3
      :lines: 3-

   .. note::
      More tests are provided in the
      :download:`compute_points.txt<compute_points.txt>` file.

#. Write the function :py:func:`update_points` that takes a customer
   number of accumulated points (integer) and a purchase amount
   (float), and returns the final number of accumulated points of this
   customer, taking into account this purchase. This function **must
   call the previous function** :py:func:`compute_points`.

   See the following examples:
   
   .. literalinclude:: update_points.txt
      :language: python3
      :lines: 3-

   .. note::
      More tests are provided in the
      :download:`update_points.txt<update_points.txt>` file.


.. rubric:: Solution

A solution is provided in the
:download:`fidelity.py<solutions/fidelity.py>` file.