Find all packages installed with easy_install/pip?

Question

Is there a way to find all Python PyPI packages that were installed with easy_install or pip? I mean, excluding everything that was/is installed with the distributions tool

Answer 1

If you use the Anaconda python distribution, you can use the conda list command to see what was installed by what method:

user@pc:~ $ conda list
# packages in environment at /anaconda3:
#
# Name                    Version                   Build  Channel
_ipyw_jlab_nb_ext_conf    0.1.0            py36h2fc01ae_0
alabaster                 0.7.10           py36h174008c_0
amqp                      2.2.2                     
anaconda                  5.1.0                    py36_2
anaconda-client           1.6.9                    py36_0

To grab the entries installed by pip (including possibly pip itself):

user@pc:~ $ conda list | grep \
astroid                   1.6.2                     
billiard                  3.5.0.3                   
blinker                   1.4                       
ez-setup                  0.9                       
feedgenerator             1.9                       

Of course you probably want to just select the first column, which you can do with (excluding pip if needed):

user@pc:~ $ conda list | awk '$3 ~ /pip/ {if ($1 != "pip") print $1}'
amqp        
astroid
billiard
blinker
ez-setup
feedgenerator 

Finally you can grab these values and pip uninstall all of them using the following:

user@pc:~ $ conda list | awk '$3 ~ /pip/ {if ($1 != "pip") print $1}' | xargs pip uninstall -y

Note the use of the -y flag for the pip uninstall to avoid having to give confirmation to delete.