Small improvement to primes_until()

5f5961bc · Taddeus Kroes · df4f5041 · 5f5961bc
Commit 5f5961bc authored Dec 01, 2012 by Taddeus Kroes
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utils.py utils.py +1 -1

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--- a/utils.py
+++ b/utils.py
@@ -35,7 +35,7 @@ def primes_until(n):
        if not lst[i]:
            yield i
-            for j in xrange(i, n, i):
+            for j in xrange(i + i, n, i):
                lst[j] = True
        i += 1