On 2014-03-08 04:53, JCosta wrote: > I did some work in c# and java and I converted some application to > Python; I noticed Python is much slower than the other languages. > > Is this normal ?
It depends. Did you write C#/Java in Python (i.e., use C# or Java idioms in Python), or did you write Pythonic code? Check your algorithms and storage classes for performance characteristics (if you used an O(1) algorithm/container in C#/Java but used an O(N) algorithm/container in Python) and make sure they match. What sorts of operations are you doing? Are you CPU-bound, I/O bound, or memory-bound? Have you profiled to see where the hot-spots are? Personally, I've found that most of my code is I/O-bound (disk or network), and that very rarely has CPU been much of a problem (usually checking my algorithm if there's trouble; occasionally I'm stuck with an O(N^2) algorithm and no language-choice. For some folks, using one of the specialty-math libraries can speed up numeric processing. If I know that memory could be an issue, I tend to switch to a disk-based data-stores to head off any trouble. -tkc -- https://mail.python.org/mailman/listinfo/python-list
