WordCount
=========

Save all functions into the same file named ``words.py``.

#. Write the function :py:func:`word_count` that takes a string 
   with a text and returns the number of words in that text. The
   function must pass the following doctest:
   
      .. literalinclude:: words.txt
         :language: python3
         :lines: 3-

   .. note::

      You can download a file with tests :download:`words.txt <words.txt>`

#. Write the function :py:func:`initials` that takes a non-empty string
   with a text and another string with a single character that is a
   lowercase letter and returns the percentage of words in that text
   beginning with the given letter. The function must pass the
   following doctest:

      .. literalinclude:: initials.txt
         :language: python3
         :lines: 3-

   .. note::

      You can download a file with tests :download:`initials.txt <initials.txt>`

#. Write the function :py:func:`suffix` that takes a string ``s`` with a
   text and another string ``suf`` with a shorter text and returns a
   list with the words in ``s`` that finish with ``suf`` in
   alphabetical order and without repetitions. We can assume that there
   are no punctuation marks in the text. Examples:

   .. literalinclude:: suffix.txt
         :language: python3
         :lines: 3 -

   .. note::

      You can download a file with tests :download:`suffix.txt <suffix.txt>`

   .. rubric:: Solution
      
   You have some solutions in the file :download:`words.py<solutions/words.py>`.