Foundation
==========

A foundation wants to carry out a control of the telephone calls of
its executives. There is a file of calls such that each line
corresponds to an executive and has the following data: the DNI of the
executive and the phone numbers he called in the last week, separated
by a space. All these data are strings (:class:`str`). An example of
this kind of file is file
:download:`data_foundation.txt<examples/data_foundation.txt>` with the
following content:

.. literalinclude:: examples/data_foundation.txt
   :language: console

Save all functions in file ``foundation.py``. 
   	      
#. Write the function :py:func:`executive` that takes a line of a file
   of calls (:class:`str`) with all the data corresponding to an
   executive, and returns a :class:`tuple` with the following
   information: DNI (:class:`str`), total number of telephone numbers
   they have called (:class:`int`) and number of times they have called to
   Switzerland (:class:`int`). The telephone numbers corresponding to
   Switzerland begin with '0041'. Examples:

      .. literalinclude:: test-executive.txt
         :language: python3
         :lines: 3-

   .. note::
        More tests are provided in file :download:`test-executive.txt <test-executive.txt>`

#. Write the function :py:func:`foundation` that takes the name of a
   file of calls (:class:`str`) and the name of another file
   (:class:`str`), and writes, in this second file, a line for each
   executive of the first file that has called to Switzerland. Each
   line has the executive DNI (:class:`str`) and the number of times
   he/she has called to Switzerland (:class:`str`), separated by a
   space. This function must call the previous one.

   Example: the following statement:
   
      .. literalinclude:: test-foundation.txt
         :language: python3
         :lines: 3
   

   uses the given data file ``data_foundation.txt``, and
   will create a file with the following content:

      .. literalinclude:: examples/tswitzerland.txt
         :language: python3


   .. note:: More tests are provided in file
        :download:`test-foundation.txt <test-foundation.txt>`

.. rubric:: Solution

A solution of these functions is provided in file :download:`foundation.py <solutions/foundation.py>`