CosmoloPy

A cosmology package for Python.

For documentation and installation instructions, see http://roban.github.io/CosmoloPy/

CosmoloPy is released under the MIT software liscense (see LISCENSE).

Example

Calculate the comoving distance to redshift 6.

>>> import cosmolopy.distance as cd
>>> cosmo = {'omega_M_0':0.3, 'omega_lambda_0':0.7, 'omega_k_0':0.0, 'h':0.72}
>>> d_co = cd.comoving_distance(6., **cosmo)
>>> print "Comoving distance to z=6 is %.1f Mpc" % (d_co)
Comoving distance to z=6 is 8017.8 Mpc

Prerequisites

Python NumPy SciPy

For tests (optional):

nose matplotlib

For power spectrum calculation (needed for most of perturbation module):

python-dev

Installation from PyPI

You can easily install the package directly from the Python Package Index with pip.

Run with:

> pip install cosmolopy

Installation from Source

To install from source, you first need to install SWIG v3 or later. Then, download the CosmoloPy source and install it by running (in CosmoloPy folder)

> pip install .

Testing

Note that currently the _udot integration appears to be failing in nosetests. The prefered way to run all tests is:

> python setup.py nosetests --with-doctest

Or if you don't want to run the doctests:

> python setup.py nosetests

If you don't have nose:

> python setup.py test > python -m doctest cosmolopy/*.py

Contributors

• Python 3 implementation by @JohannesBuchner and @1313e
• Automated PyPI deployment on GitHub Actions by @1313e