Pyhton troubles..

def count(L,o):

    '''
        A doctest providing supporting evidence that
        the function might be correct.
        >>> a='forty-five'
        >>> a.count('f') == count(a,'f')
        True
    '''

    # longer, but still probably shorter than your version, that is, if you bothered to write a solution
    occurrences = 0
    for obj in L:
        occurrences += obj == o
    return occurrences

    # short form
    return sum(obj == o for obj in L)

def list_reverse(mylist):
    return mylist[::-1]

mylist = list('abcde')
print(list_reverse(mylist))

temp = []
while(len(fitness) >=1):
  temp.append(fitness[fitness.index(max(fitness))])
  del fitness[fitness.index(max(fitness))]