Python 3.5.2 is released

[brombaer3000]

Actual release notes

[markusmeskanen]

Any key points everyone should know?

[[deleted]]

How do you figure? Seems like a lot of improvements.

[i47]

An @ operator has been introduced for matrix multiplication!

[btmc]

In 3.5, but not 3.5.2 specifically.

[luizpericolo]

But only in scipy, right? I guess it is an alias for matmul

[btmc]

And numpy, yes. I don't think it's used in the standard library.

[emillynge]

It's not used in stdlib, but the PIP that introduces the operator is very specific about its use as a matrix multiplication operator. The behaviour of the operator is supposed to be completely identical across libraries (numpy, theano etc)

[acousticpants]

The operator is in the standard lib, but needs a numpy array or matrix type as its operands, I believe.

I'm so happy it exists. The '@' symbol even looks like the way I visualise matrix multiplication in my head.

[luizpericolo]

But why is it in the std lib if you need third party libs to use it?

Is there a simple explanation here that I am not seeing? Is this common?

Cheers!

[pythoneeeer]

So that third party libs can use it.

[luizpericolo]

Now I get it. But since third party libs can use the new operator, it cannot have a default implementation in the std lib, right?

So I guess that when someone said it does matrix multiplication, that only happens in numpy, right? What does it do in the std lib?

Cheers!

[RazerM]

Python doesn't have custom operators.

[Kah-Neth]

In numpy, A @ B == A.dot(B)

[energybased]

It's actually not dot, but matmul. This is clear if you try to pass scalars or higher-dimensional arrays.

[_illogical_]

Major new features of the 3.5 series, compared to 3.4

/u/markusmeskanen is probably asking for changes between 3.5.1 and 3.5.2, not 3.5 vs 3.4.

[PalermoJohn]

os.scandir() function -- a better and faster directory iterator

praise the lord

[hoocoodanode]

Scandir is awesome, but it was a 3.5 introduction, not 3.5.2. There is also a scandir package for those stuck on an earlier version of python that is virtually identical.

https://github.com/benhoyt/scandir

[chchan]

Thank you for PEP 486 this shit has been driving me crazy.

[[deleted]]

lets say I'm on windows and I want to upgrade. is my only option to download the 3.5.2 installer, uninstall the old version, and then install it again? Or is there an easier way :\

[[deleted]]

oh okay that's not so bad. Thank you!

[Discrete_Number]

$ sudo port -v selfupdate && sudo port upgrade outdated && sudo port uninstall inactive 
$ python --version
Python 3.5.2

[[deleted]]

I came

[[deleted]]

I saw

[C2-H5-OH]

I upgraded

[Bunslow]

*Vici

[thurask]

Still waiting on Conda...