Installing Python modules on PythonAnywhere
You can install new modules into PythonAnywhere by using a Bash Console
1. Using the --user flag
To install a package into your account so that your Python programs can see it
by default, use one of the
pip commands. There is one for each Python version:
pip2.7 installs modules for Python 2.7,
pip3.5 installs modules for Python
3.5, and so on. Modules that you install for one Python version are not visible
from others, so it's important to use the right one.
Example: to install the
pwhich module for Python 3.4, you'd run this in a Bash
console (not in a Python one):
pip3.4 install --user pwhich
Please note, the command line option before the module name is quite literally
don't need to replace it with your username, or to add your username to the
Do let us know if there are any packages you think should be part of our standard "batteries included".
2. Using a virtualenv
We've also included
virtualenvwrapper, so if you create a
virtualenv you can install whatever versions of various packages you want to.
However, in a virtualenv, the
--user mentioned above is not needed. In fact
--user will cause an error in a virtualenv.
You can specify which Python version to use for your virtualenv using the
--path option. So, to create a new Python 3.5 virtualenv, run this command:
$ mkvirtualenv my-virtualenv --python=`which python3.5`
...or similarly for Python 2.7:
$ mkvirtualenv my-virtualenv --python=`which python2.7`
Then to install packages you can just use pip with no Python version number or
(my-virtualenv) $ pip install pwhich
We recommend that in any Python 2.7 virtualenv you create, you install the following security fix packages:
(my-virtualenv) $ pip install urllib3[secure] pyopenssl ndg-httpsclient pyasn1
These should make sure that your code can make access external websites without security warnings.
Using virtualenvs in web apps
You need to enter the location of your virtualenv on the "Web" tab to use it in a web app. Check out the example here