Python Memory Error while iterating to a big range

Question

total = 0
x = 2**32
for i in range(x):
    total = total + i;
print(total) 

I am getting a MemoryError<

Answer 1

1. range creates a list in memory. Use xrange to get a generator object which gives you one number in a time.

2. There are better ways to sum a range of numbers from 1 to n, for example (n(n+1))/2.