Conditional statement simplification
====================================

Analyse which of these functions with conditional statements can be simplified.
Then simplify those that can be simplified (removing the conditional statement).

#. .. code:: python

     def f1(a):
       if a > 0:
          b = a
       else:
          b = abs(a)
       return b

#. .. code:: python
   
     def f2(found):
       if found :
          equals = False
       else:
          equals = True
       return equals

#. .. code:: python

      def f3(a, b):
        if a != b :
           equals = False
        else:
           equals = True
        return equals
	
#. .. code:: python

      def f4(n):
        a = n%3
        if a == 0:
           b = 1
        elif a == 1:
           b = 2
        elif a == 2:
           b = 3
	return b

#. We have been given the following function ``avoidable``. Discuss the
   result returned for the calls ``avoidable(a, 'A')`` with the
   following current values for parameter ``a``: ``10``, ``11``, ``12``, ``13``
   and ``14``.

   Next, analyse whether it can be simplified or not and, if, so,
   simplify it by removing the conditional statement

  .. code:: python
	    
    def avoidable (a, letter):
        b = a%4
        if b == 0:
            c = ''
        elif b == 1:
            c = letter
        elif b == 2:
            c = letter + letter
        else:
            c = b * letter
        return c

	
.. rubric:: Solution

A solution is provided in file
:download:`avoidables.py<solution/avoidables.py>` file.