lesson_8_ex_1_17_18

l = []
flag = False
while flag == False:

  x = raw_input(' dose tixaio arithmo : ')
  if x == '!':
    flag = True
  else:
    l.append(float(x))
print l

if len(l) % 2 == 0:
  Case = 'even'
else:
  Case = 'odd'

k = []
  for i in range(0, len(l) / 2):
    r = l[i] * l[len(l) - 1 - i]
    k.append(r)
if Case == 'odd':
  k.append(l[len(l) / 2] ** 2)
print k

 

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