quantities
A Python package for handling physical quantities. The source code and issue tracker are hosted on github:
https://www.github.com/python-quantities/python-quantities
Download
Get the latest version of quantities from https://pypi.python.org/pypi/quantities/
To get the git version do:
$ git clone git://github.com/python-quantities/python-quantities.git
Documentation and usage
You can find the official documentation at:
http://python-quantities.readthedocs.io/
Here is a simple example:
>>> import quantities as pq
>>> distance = 42*pq.metre
>>> time = 17*pq.second
>>> velocity = distance / time
>>> velocity
array(2.4705882352941178) * m/s
>>> velocity + 3
Traceback (most recent call last):
...
ValueError: Unable to convert between units of "dimensionless" and "m/s"
Installation
quantities has a hard dependency on the NumPy library. You should install it first, please refer to the NumPy installation guide:
http://docs.scipy.org/doc/numpy/user/install.html
To install quantities itself, then simply run:
$ python setup.py install --user
If you install it system-wide, you may need to prefix the previous command with sudo
:
$ sudo python setup.py install
Tests
To execute all tests, run:
$ python setup.py test
in the current directory. The master branch is automatically tested by Travis CI.
Author
quantities is written by Darren Dale
License
Quantities only uses BSD compatible code. See the Open Source Initiative licenses page for details on individual licenses.
See doc/user/license.rst for further details on the license of quantities