Package Installation

To install Cosmo-Utils, you can use pip or clone the repository from Github and build the source code.

Using pip

The simplest way to install Cosmo-Utils is with pip. To install it with pip

pip install cosmo-utils

This will install the latest official release of the code.

Upgrading via pip

Whenever there is a new release, you can upgrade your current version by running

pip install --upgrade cosmo-utils

This will ensure that you have the most up-to-date version of Cosmo-Utils.

Building from Source

If you don’t install the latest relases using pip, you can instead clone the source code and call the setup file. This is the most common way to install Cosmo-Utils if you want versions of the code that have been updaed since the latest official release. In this case, after installation it is particularly important that you follow the instructions in Verifying your installation section below.

The first step is to clone the Cosmo-Utils repository:

git clone
cd cosmo_utils

Installing one of the official relases

All official releases of the code are tagged with their version name, e.g. v0.1.0. To install a particular release:

git checkout v0.1.0
python install

This will install the v0.1.0 release of the code. Other official release versions (e.g. 0.1.1) can be installed similarly.

Installing the most recent master branch

If you prefer to use the most recent version of the code:

git checkout master
python install

This will install the master branch of the code that is currently under development. While the features in the official releases have a stable API, new features being developed in the master branch may not. However, the master branch may have new features and/or performance enhancements that you may wish to use for your science application. A concerted effort is made to ensure that only thoroughly tested and documented code appears in the public master branch, though Cosmo-Utils users should be aware of the distinction between the bleeding edge version in master and the official release version available through pip.

Verifying your installation

After installing the code and its dependencies, fire up a Python interpreter and check that the version number matches what you expect:

import cosmo_utils

If the version number is not what it should be, this likely means you have a previous installation that is superseding the version you tried to install. This should be accomplished by doing pip uninstall cosmo-utils before your new installation, but you may need to uninstall the previous build “manually”. Like all python packages, you can find the installation location as follows:

import cosmo_utils

This wil show where your active version is located on your machine. You can manually delete this copy of Cosmo-Utils prior to your new installation to avoid version conflicts. (There may be multiple copies of Cosmo-Utils in this location, depending on how many times you have previously installed the code - all such copies my be deleted prior to reinstallation).