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On May 18, 2015, at 9:23 PM, Galen Charlton <[log in to unmask]> wrote: >> I have two scripts, attached. They do EXACTLY the same thing >> in almost EXACTLY the same manner, but the Python script is >> almost 25 times slower than the Perl script: > > I'm no Python expert, but I think that the difference is much more > likely due to which JSON processor is being used. I suspect your Perl > environment has the JSON::XS module, which is written in C, is fast, > and is automatically invoked (if present) by "use JSON;". > > In contrast, I believe that the Python "json" library is written in > Python itself. I tried swapping in cjson and UltraJSON [1] in place > of "json" in your Python script, and in both cases it ran rather > faster. > > [1] https://github.com/esnme/ultrajson Thank you. After using the Python module ujson instead of json, the speed of my two scripts is now all but equal. Whew! —Eric