Checking the version of an ipython library from Terminal?

Question

I'm using iPython from the Anaconda distribution and I want to know how to check the version of some of the libraries from Terminal (using Mac), for example scikit_learn, but don't know the commands...

could someone advise? Thanks!

Answer 1

With anaconda, you can find information about the version with the following command:

conda list <package name>

for instance:

conda list scipy

will return (on my system, from my default environment)

# packages in environment at /Users/reblochonmasque/anaconda3:
#
scipy                     0.15.1               np19py34_0 

for your specific question, use:

conda list scikit-learn

To find what versions are available for your system, use:

conda info scikit-learn

if you find that you need to update the library, first update conda

conda update conda

then, updating anaconda will update all your libraries (those installed by conda)

conda update anaconda

if you only want to update this specific library (but you may have to deal with dependencies)

conda update -n <environment name> scikit_learn

If you ever need to revert to a previous version: first find out the history of the versions you updated to

conda list -r scikit-learn

then choose the revision you want to revert to (the number will be from the list given by the command above):

conda install --revision=4 scikit-learn