Patients
========

A file contains a record of the body temperatures of several patients staying in a hospital. The Each line of the file corresponds to a patient and contains the name of the patient (:class:`str`) followed by a number of measured temperatures (:class:`float`) all separated by coma (``','``) . The number of dates and the number of measures for all the patients is the same. The file :download:`patients.txt <patients.txt>` contains the following example:

    .. literalinclude:: patients.txt
        :language: python
    
We need to **filter** the patients whose average temperature is strictly greater than a given threshold. 

Implement the following Python function in the module :mod:`patients` (file :file:`patients.py`):

        .. py:function:: filter_high_fever(pat_in, pat_out, th)``
        
such that 

        | **takes** two :class:`str` with file names, and ``th`` which is a :class:`float` between ``35.0`` and ``40.0``, both included
        
and does two things: 
        
        | 1. **writes** a file with name ``pat_out`` with the information about the patients in ``pat_in`` whose average temperature is strictly greater than ``th``. The format etails of the file is as follows:

            - The patients must appear in the same order as in the ``pat_in`` file.
            - For each patient the must be a line with the name, the average temperature rounded to 2 decimal, and h@s measures, all separated by coma (`','`).
        
        | 2. **returns** two  :class:`int` with the number of patients processed and the number of patients filtered.

For example the call ``filter_high_fever('patients.txt', 'pat37.1.txt', 37.1)`` should return ``(9, 5)`` and create the file :download:`pat37.1.txt <pat37.1.txt>` that contains the following text:

    .. literalinclude:: pat37.1.txt
        :language: python

Doctests are available at the :download:`filter_high_fever-test.txt <filter_high_fever-test.txt>` file.