File Reading

[wavic]

sum_ = 0
numbers = 0
for line in lines:
    try:
        sum_ += int(line)
        numbers += 1
    except ValueError:
        pass

I am assuming that list comprehension is not allowed so here is one way to do it. It's readable and clear.

I just have learned something new. Stripping whitespace characters is not necessary to convert a string to an integer. I tried it couple of minutes ago.

>>> int('  \t10 \n')
10