Find Zero |2|
~~~~~~~~~~~~~

Write a function named *find_zero* which takes a *list of integers* as
argument. The function returns an *integer* as the index of **first
occurrence** of zero in the given list. If the given list does not
contain any zeros, then the function must return **-1**.

**Note:** You can not use any built-in function that gives the index of
an element in a list. The equality operator(“==”) is also forbidden for
this question.

.. container:: sampleio

   Sample I/O:

.. |2| image:: ../../figures/difficulty_three.png
   :class: difficulty

.. code:: default

   >>> find_zero([1,2,3,4,5])
   -1


   >>> find_zero([123,35,0,46,2567])
   2


   >>> find_zero([0,1,0,1,1,0])
   0

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Show the Answer

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.. code:: python

   def find_zero(numbers):
       index_of_zero = -1
       index_counter = -1
       try:
           for number in numbers:
               index_counter += 1
               temporary = 32/number   # Apply division to catch ZeroDivisionError exception.
       except ZeroDivisionError:       # 32 and temporary have no meaning here. They can be anything.
           index_of_zero = index_counter
       return index_of_zero

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