PyPy is an alternate implementation of the Python 2.7, 3.7, 3.8 and 3.9 (beta) interpreters. PyPy's benefits are in the area of speed, memory usage, sandboxing and stacklessness. It is compatible with CPython with some exceptions. PyPy also can be used to compile RPython programs to C code.
For Python 2.7, install thepackage. For Python 3, install the package.
PyPy is installed in
/opt/pypy3 and the main pypy executable is
Basic PyPy usage is done through the
pypy3 command and functions similarly to CPython usage. Enter
$ pypy -h
to view the listing of
To load the PyPy interactive interpreter, run
Run program from file
To run a Python program from a file in PyPy, run
$ pypy example.py
Virtual environment creation
To make a virtual environment with PyPy:
$ virtualenv --python=/usr/bin/pypy venv-pypy
See Python/Virtual environment for further information.
As Python packages for PyPy are not distributed as Arch packages, it is most convenient to install what you require as your own user:
$ pypy -m ensurepip --user $ pypy -m pip install --user --upgrade pip
Once you have pip, you can install any package you need, e.g.,
$ pypy -m pip install --user sqlalchemy
If you would prefer to install packages system-wide, just run the previous commands as root without the
--user. Note that this will result in the packages being installed in
/opt/pypy without the package manager being aware of them.
Python libraries and programs can be installed in PyPy through EasyInstall.
EasyInstall does not come with the PyPy package but is automatically installed when installing pip and located at
Installing EasyInstall packages
To install the EasyInstall package
package_name into PyPy, enter
# /opt/pypy/bin/easy_install package_name
Packages will be located at
/opt/pypy/site-packages. Installed libraries and applications will be at
/opt/pypy/bin. Programs installed through EasyInstall on PyPy can usually be ran with
/opt/pypy/bin/program_name where program_name is the name of the PyPy program.
EasyInstall package example
The following will install the Lamson email framework:
# /opt/pypy/bin/easy_install lamson
The following will run the framework's
gen -project command:
$ /opt/pypy/bin/lamson gen -project testproject