51–60 of 165 posts
* The new subprocess.run() function provides a streamlined way to run subprocesses.
Yeah! I've implemented that function a dozen times in projects, I suppose because it was too trivial to put on pypi.
* collections.OrderedDict is now implemented in C, which makes it 4 to 100 times faster.
Nice, I use this one relatively often.
Earlier quoted context omitted.
I want to see it used for an XML library, since I think node@"name" is a more succinct, and domain-appropriate equivalent for node.attrib.get("name").
I have kind of mixed feelings. The biggest argument against that PEP was that people would use it for things that are very unlike matrix multiplication, which can be confusing. I can kind of see the point there, but on the other hand the @ symbol really is natural for things like what you suggest.
I tried hard to think of ways to (ab)use '@', and this XML example and perhaps some sort of messaging API were the only two I could come up with where there was a natural domain-specific mapping.
One of the advantages of keeping '@' at the same precedence level and ordering as '*', '/', '%', and '//' is that it doesn't really offer much in the way of new use. If someone uses '@' for something very unlike matrix multiplication, then they could already use any of the other 4 symbols that way.
So I don't think @ ends up as an attractive nuisance.
Could someone explain how to properly install Python 3.5.0 on Ubuntu so that it replaces the system's default Python 3.4.0 as the new default? Installing is the easy part, but I haven't figured out how to also make sure all the libraries that come with Python are also replaced with the 3.5 versions. Thanks!
In that case, `pyenv install 3.5.0` and then `pyenv shell 3.5.0` or `pyenv global 3.5.0` to switch which Python gets used. With pyenv's virtualenv plugin, you can also get rid of the need to use virtualenvwrapper for managing dependencies.
Question - is there any web/api framework that leverages asyncio ? This implicitly also means first class DB/ORM support. Flask, sqlalchemy ,etc seem to be using gevent and py 2.7.
It's hard to write an asynchronous ORM though. Your options are either to use some existing synchronous ORM (like SQLAlchemy) in a thread pool (`loop.run_in_executor`) or use more low-level db driver: https://github.com/aio-libs/aiopg#example-of-sqlalchemy-opti...
The scandir update also changes the underlying implementation of os.walk giving loads of production apps a huge speed increase by making use of additional data returned by the os calls.
Could os.walk have been changed "under the hood" without a PEP? eg. using — just for example — fast_walk_in_c in _os.so (I understand that adding os.scandir might require a PEP)
https://mail.python.org/pipermail/python-ideas/2012-November... is the original proposal on -ideas.
Could someone explain how to properly install Python 3.5.0 on Ubuntu so that it replaces the system's default Python 3.4.0 as the new default? Installing is the easy part, but I haven't figured out how to also make sure all the libraries that come with Python are also replaced with the 3.5 versions. Thanks!
I'm constantly having to hack around bugs in ancient versions of libraries that have been fixed years ago for the same reason.
I have a feeling the slow adoption rate of python 3 is not due to developers "rejecting" it.
Python 3 keeps getting better and better. I've been writing more code in Python 3 than 2 for about three years now, and I absolutely love it. When I have to write code in 2.7 now, it feels like shifting from fifth gear down to second.
Python 3 keeps getting better and better. I've been writing more code in Python 3 than 2 for about three years now, and I absolutely love it. When I have to write code in 2.7 now, it feels like shifting from fifth gear down to second.
Python 3 keeps getting better and better. I've been writing more code in Python 3 than 2 for about three years now, and I absolutely love it. When I have to write code in 2.7 now, it feels like shifting from fifth gear down to second.
Is Py3 ready for prime time? Do all the right libraries have support now?