[Python-ideas] Re: inline Python functions and methods
So I went back and revised my idea for inline functions in python, and I realized that it would be harder to implement them in python the way I had originally thought about them, due to Python’s dynamic nature. However, the idea itself doesn’t seem so original, as Cinder already implements inline byte-code caching which significantly boosts its performance. I do not think they ever upstreamed these changes however. So a modification of my idea goes like this. The inline functions can still be written with the inline keyword, but evaluated at runtime. This is because there are some cases such as in conditions where are function might never be called at all, so it wouldn’t need to be optimized in that case so in cases where someone writes code like, if True: inline def func_version_one(*args): #func body pass else: inline def func_version_two(*args): #func body pass The right function to perform inlining on shall be determined at runtime and cached in the same scope as where it’s performing it’s operations from cases where the program performs large iterations or even in infinite loops and other cases that need optimization. Like I said before, it’s still a work-in-progress, and I’m still putting lots of factors into consideration, including your incredible insight as the core dev team. ___ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/J44HVJLGKYA4I62WJDQTUZCOUQI2IU2H/ Code of Conduct: http://python.org/psf/codeofconduct/
[Python-ideas] Re: inline Python functions and methods
> What inlining usually means is to copy the body of the function > in place of the call, with appropriate parameter substitutions. > That would eliminate most of the overhead of a function call, but > there are problems with doing it in Python. Imported modules would > have to be located and parsed at compile time, something that doesn't > currently happen. And it can't be done in general-- the location of an > imported module isn't know for sure until run time, because changes > can be made dynamically to sys.path. This is what I was thinking about as well. That's why I tried to limit the operations of this feature to compiletime only, If a function fails to be inlined at compiletime due to dynamic behavior of python, then the normal function call behavior can be the fallback ___ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/D7YNBPTLFHH4QBXKDSTPV22WGKPBPSYX/ Code of Conduct: http://python.org/psf/codeofconduct/
[Python-ideas] Re: inline Python functions and methods
So for the point of benchmarks, This is a link to some of the hacks developed by Pythonistas to boost some python speed. Among the hacks, there's a topics called "reducing dots" and "local variables". https://wiki.python.org/moin/PythonSpeed/PerformanceTips Also I would explain to a pythonista that an inline function is that function which is copied into the same spot that it's called. I know it's a somewhat vague definition, but that's what I could think about so far. By scope, yes, I do mean the function's local scope and not surrounding scope. And per example you've provided, yes, spam shall appear inside the functions a stated, and I think It might not appear in the global scope as hypothesized, since it's what we're trying to evade in the first place. The rest of the concerns you've mentioned above are thinking points that I must take into consideration, that's exactly why I was poking around for such insights that I might have skipped while thinking about this. ___ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/X4VPPKYMWP57AF6W7NMZFGQDBTHSXIVD/ Code of Conduct: http://python.org/psf/codeofconduct/
[Python-ideas] inline Python functions and methods
The Python community has a 5 year plan to push the limit of speed in Python. One of the things that reduces Python execution speed is calling methods or functions that are not in the nearest scope. My suggestion is to introduce inline functions just as they are in C. They can be defined as global functions or class methods but are created in the scope of the function that is calling it at parsetime. I also don’t think it’ll be hard to adapt. inline functions might look something like: inline def func(): pass inline async def func(): pass inline class Executor: inline def func(): pass For an inline method, the class must be defined as inline as well, in order to bring to scope whatever class variable or method that the inline function might rely on. This is just a suggestion, what do you guys think about it. ___ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/7XSAC2STMEU6WJSLP3DGOGJJGG4IUO3L/ Code of Conduct: http://python.org/psf/codeofconduct/
[Python-ideas] Official means to release the GIL in Python
The GIL has been a widely discussed topic in the Python community. It's has it's advantages and disadvantages. I was suggesting that an official way be placed in the Python threading module to release the GIL if one needs to perform some tasks that don't need the GIL. It could be something as simple as thd = threading.Thread(target = encrypt, nogil = True) I saw a nogil option in Cython, I just thought it would be great to have it fully support in Python as we await the results from Sam Gross's paper. ___ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/5PWD7MXW6EO3ZECUPNXUQHE6HBYZ4JPU/ Code of Conduct: http://python.org/psf/codeofconduct/
[Python-ideas] Re: Enhancing iterator objects with map, filter, reduce methods
Matt D wrote: > In your comprehension example, I'm fairly certain the filtering should be on > the post incremented remainder > [ x+1 for x in [1,2,3] if (x+1) % 2 == 0] how about [ sum for num in [1,2,3] if ((sum := num + 1) %2 == 0] ___ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/QHNJHTU5HRNLVGH7M27G5DZJACYR7GYZ/ Code of Conduct: http://python.org/psf/codeofconduct/
