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I have coded with both, and practically, yes, they are. The only place where JS would beat Python would be a big loop with number crunching, which you would do

I have coded with both, and practically, yes, they are. The only place where JS would beat Python would be a big loop with number crunching, which you would do with numpy anyway. Or pypy, which is 50 times faster than V8. A desktop app would not see any difference. A sysadmin script neihter. Data analystics is made using numpy/scipy/pandas. Web sites bottleneck are incredibly rarely the server side scripting language, and when it is, you go rust/go. But for our current debate, electron VS PyQT, well yes, the C++ does the heavy lifting and you get to use Python only for the stuff it is good at. Win-win. The problem with using PyQT is making an exe or making fancy graphics is harder than in electron. Everything else, and I do mean everything else, is easier and more performant with PyQT.

hungerstrike 9y ago
You can't say that "a desktop app/sysadmin script/website/etc would not see any difference" without knowing what the app was doing. An app like VSCode has a ton of shit to do. However, the real problem with PyQT is that Python is relatively garbage compared to JS and that's why it's not nearly as popular as JS.
foldr 9y ago
> pypy, which is 50 times faster than V8. Ehhh V8 is pretty competitive with C for number crunching. Where are you getting that 50 times figure from?
- KaiserPro 9y ago
  threads.
  - foldr 9y ago
    http://doc.pypy.org/en/latest/faq.html#does-pypy-have-a-gil-why http://doc.pypy.org/en/latest/faq.html#does-pypy-have-a-gil-... If you're using parallelism for non-IO-related reasons, then in either language, you'll probably end up using multiple processes rather than multiple threads.
bjoli 9y ago
I like neither python nor JS, by my experience is more like the parents. Once you step outside of the highly optimized C that much of the standard python is written in, it is not a very fast language. V8 has been running many many laps around cpython for the use cases I have been using it for, and PyPy has generally been slightly slower.

hungerstrike 9y ago

You can't say that "a desktop app/sysadmin script/website/etc would not see any difference" without knowing what the app was doing. An app like VSCode has a ton of shit to do. However, the real problem with PyQT is that Python is relatively garbage compared to JS and that's why it's not nearly as popular as JS.

foldr 9y ago

> pypy, which is 50 times faster than V8. Ehhh V8 is pretty competitive with C for number crunching. Where are you getting that 50 times figure from?

KaiserPro 9y ago
threads.
- foldr 9y ago
  http://doc.pypy.org/en/latest/faq.html#does-pypy-have-a-gil-why http://doc.pypy.org/en/latest/faq.html#does-pypy-have-a-gil-... If you're using parallelism for non-IO-related reasons, then in either language, you'll probably end up using multiple processes rather than multiple threads.

bjoli 9y ago

I like neither python nor JS, by my experience is more like the parents. Once you step outside of the highly optimized C that much of the standard python is written in, it is not a very fast language. V8 has been running many many laps around cpython for the use cases I have been using it for, and PyPy has generally been slightly slower.