calculating triangular numbers
from itertools import islice | |
def triangular(): | |
n = 1 | |
i = 1 | |
while True: | |
yield n | |
i +=1 | |
n += i | |
# <codecell> | |
for i, n in enumerate(islice(triangular(), 10)): | |
print i+1, n |
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