I am new to Python so please excuse me if this is a very obvious questions, how do I write a statement like this in Python
for (int i=p*2; i<=n; i += p)
for i in range(p*2, n)
but then how does it increment?
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3 Answers
for i in range(p*2, n + 1, p): # range(inclusive start, non inclusive end, step)
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range generates a sequence of numbers - a range. For example, range(0,5) is equivalent to [0, 1, 2, 3, 4]. It's signature is range(start, stop, stride), which in C would be
for (int i=start; i<stop; i+=stride)
So you should iterate as
for i in range(p*2, n+1, p):
...
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if you look up the range function you will notice that it actually can take three arguments. The third value is the amount to increment by, which is 1 by default. Just change to
range(p*2, n, p)
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