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[version] have to be replaced by the name of the package and version to be installed.
|3.10, 3.9, 3.8, 3.7, 3.6, 3.5, 3.4, 3.3|
|2.7, 2.6, 2.5, 2.4|
The default version can be changed from the alwaysdata administration, under Environment > Python. This is the version that is especially used when you start
Versions are not necessarily already installed.
You can view the error logs in the
$HOME/admin/logs/uwsgi/[id].log file where
[id] is the identifier for your site, shown in the Web > Sites section.
You need to always use
/usr/bin/python). Never use
python2.7 or any other command.
To force the use of a different version of Python other than the default one, define the environment variable
$ PYTHON_VERSION=2.7 python
In your scripts, use
/usr/bin/python as shebang:
To force the use of a specific version of Python:
#!/usr/bin/eval PYTHON_VERSION=2.7 python
The other binaries included in Python (
pydoc, etc.) work the same way.
Your Python environment starts off empty, with no ready installed libraries other than the standard library. You can use
pip to install packages, this is the standard Python tool:
$ pip install [package]
Packages are installed in the standard
$HOME/.local directory and they are automatically added to
sys.path by Python.
Note that you will need to re-install the packages if you change the major Python version (versions 3.5 and 3.6 are two different major versions, whereas 3.5.1 and 3.5.2 use the same major version).
We recommend using virtual environments if you use a number of different Python applications so that each one has its own separate environment.
With Python 3, use
$ python -m venv myenv
With Python 2, use
$ virtualenv myenv
Once your virtual environment is installed, you can activate it with:
$ source myenv/bin/activate
Install the latest version of a package:
$ pip install [package]
You can specify a specific version:
$ pip install [package]==[version]
To install a set of packages defined in a
$ pip install -r requirements.txt
$ pip uninstall Django
You can install a package using Distutils without using pip:
$ python setup.py install --user
If you use a virtual environment, there is no need to specify
So that a WSGI application is accessible by the web, you need to add a site in the administration Web > Sites section:
You can also fill-in a number of optional fields:
You will have to use the and make the HTTP server listen in IPv6 and on the given port. For example:
uvicorn example:app --reload --port $PORT --host $IP