lasagne cannot import BatchNormLayer

[wanghao...@gmail.com]

I have met a problem about lasagne ImportError: cannot import BatchNormLayer from the following line: 

from lasagne.layers import BatchNormLayer 

I have checked the source code, BatchNormLayer seems not in lasagne.layers, but I believe you have implemented it since many people have used it, where can I find it? 

I am using python 2.7, could this be the issue. 

I have pip install --upgrade my numpy, scipy, theano and lasagne, so I version problem of these packages is not an issue? 

Thanks,

Haohan

[Sander Dieleman]

If you install Lasagne through "pip install Lasagne", you will get the 0.1 release. This does not have BatchNormLayer. We recommend using the latest version from git, which is stable enough for daily use. (The same goes for Theano by the way.)

Have a look at the installation instructions to find out how to install it: http://lasagne.readthedocs.org/en/latest/user/installation.html#bleeding-edge-version

Sander

[André Lopes]

I didnt know lasagne had BatchNormLayer already!

Is there a page on the wiki describing how to use it?

[Sander Dieleman]

Read the f...riendly manual ;)

it's right there in the docs: http://lasagne.readthedocs.org/en/latest/modules/layers/normalization.html?highlight=batch%20normalization#lasagne.layers.BatchNormLayer

[André Lopes]

Sorry, i thought was something uber-new implemented and still didnt have a page added.

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[Sander Dieleman]

No worries :) As a general rule, we do not merge PRs without appropriate tests and documentation, so the minute something lands into the Lasagne master branch, there should be documentation for it.

[mathsw...@gmail.com]

It is still okay to use pip install using their methods ?

[Jan Schlüter]

It is still okay to use pip install using their methods ?

Not sure what you mean by "their methods", but I'd recommend installing the bleeding-edge version:
http://lasagne.readthedocs.org/en/latest/user/installation.html#bleeding-edge-version

A mere "pip install lasagne" will still give you version 0.1 from August 2015 -- we're not exactly quick in releasing new versions, any help is appreciated (https://github.com/Lasagne/Lasagne/issues?q=is%3Aopen+is%3Aissue+milestone%3Av0.2).

Best, Jan