Whereas Anaconda Cloud automatically displays a version number of a certain installed package, users choosing to use a default Python installation can use pip to display it through the following command:

>> import pandas
>> pandas.__version__ # output will be a version number, for example: u'0.18.1'

Upgrading a package, for example when there's a new version you'd like to use, can be done as follows:

>> pip install -U pandas==0.21.0

Upgrading it to the latest available version can be done as follows:

>> pip install -U pandas

Uninstalling a package can be done with the following command:

>> pip uninstall <package name>