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copied!<p>It's quite straight-forward to print result of a function:</p> <pre><code>print buildPrimeList() </code></pre> <p>Also I've noticed that you do not convert raw_input's result (which is string) to int:</p> <pre><code>x = int(raw_input("Enter a number higher then 3 ")) </code></pre> <hr> <p>Another way to do the same thing in python might look like:</p> <pre><code>from itertools import count def is_prime(n): """Checks if given number n is prime or not.""" for i in xrange(2, n/2): if n % i == 0: return False else: return True def prime_numbers(): """Generator function which lazily yields prime numbers one by one.""" for i in count(1): if is_prime(i): yield i if __name__ == '__main__': maxprime = int(raw_input("Enter a number:")) for prime in prime_numbers(): if prime < maxprime: print prime else: break </code></pre> <p>A number of python idioms and language features were used:</p> <ul> <li>generator functions and iterators [1];</li> <li>snake_case_method_naming [2];</li> <li>docstrings [3];</li> <li><code>if __name__ == '__main__': ...</code> [4].</li> </ul> <p>[1] <a href="http://www.ibm.com/developerworks/library/l-pycon/index.html" rel="nofollow noreferrer">http://www.ibm.com/developerworks/library/l-pycon/index.html</a></p> <p>[2] <a href="http://www.python.org/dev/peps/pep-0008/" rel="nofollow noreferrer">PEP 8: Style Guide for Python Code</a></p> <p>[3] <a href="http://www.learningpython.com/2010/01/08/introducing-docstrings/" rel="nofollow noreferrer">http://www.learningpython.com/2010/01/08/introducing-docstrings/</a></p> <p>[4] <a href="https://stackoverflow.com/questions/419163/what-does-if-name-main-do">What does if __name__ == "__main__": do?</a></p> <hr> <p><b>p.s.</b> As jellybean and rpInt noted in their answers and comments there are a number of ways to speed things up. But most likely you shouldn't do that (unless you absolutely have to) as "Simple is better than complex" [5].</p> <p>[5] <a href="http://www.python.org/dev/peps/pep-0020/" rel="nofollow noreferrer">PEP 20: The Zen of Python</a></p>

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