d = { 'Adam': 95, 'Lisa': 85, 'Bart': 59, 'Paul': 74 }
l=d.values()
sum = 0.0
for v in l:
sum=sum+v
print sum/len(l)
>>> total = 0
>>> x = 1
>>> y = 100
>>> while x < y:
if x%2 == 0:
x = x + 1
continue
total = total + x
x = x + 1
