Installing pyCSEP

We are working on a conda-forge recipe and PyPI distribution. If you plan on contributing to this package, visit the contribution guidelines for installation instructions.


This package requires >=Python 3.9.

The easiest way to install PyCSEP is using conda. It can also be installed using pip or built from source.

Using Conda

For most users, you can use

conda install --channel conda-forge pycsep

Using Pip

Before this installation will work, you must first install the following system dependencies. The remaining dependencies should be installed by the installation script. To help manage dependency issues, we recommend using virtual environments like virtualenv.

Python 3.9 or later (

NumPy 1.21.3 or later (
Python package for scientific computing and numerical calculations.

SciPy 1.7.1 or later (
Python package that extends NumPy tools.

Pandas 1.3.4 or later (
Python package for data analysis and manipulation.

Cartopy 0.22.0 or later (
Python package for geospatial data processing.

Example for Ubuntu and MacOS:

git clone
pip install --upgrade pip
pip install -e .

Installing from Source

Use this approach if you want the most up-to-date code. This creates an editable installation that can be synced with the latest GitHub commit.

We recommend using virtual environments when installing python packages from source to avoid any dependency conflicts. We prefer conda as the package manager over pip, because conda does a good job of handling binary distributions of packages across multiple platforms. Also, we recommend using the miniconda or the miniforge (which uses mamba for a faster dependency handling) installers, because it is lightweight and only includes necessary pacakages like pip and zlib.

Using Conda

If you don’t have conda on your machine, download and install Miniconda or Miniforge

git clone
cd pycsep
conda env create -f requirements.yml
conda activate csep-dev
# Installs in editor mode with all dependencies
pip install -e .

Note: If you want to go back to your default environment use the command conda deactivate.

Using Pip / Virtualenv

We highly recommend using Conda, because this tools helps to manage binary dependencies on Python packages. If you must use Virtualenv follow these instructions:

git clone
cd pycsep
python -m virtualenv venv
source venv/bin/activate
# Installs in editor mode dependencies are installed by conda
pip install -e .[all]

Note: If you want to go back to your default environment use the command deactivate.

Developers Installation

This shows you how to install a copy of the repository that you can use to create Pull Requests and sync with the upstream repository. First, fork the repo on GitHub. It will now live at<YOUR_GITHUB_USERNAME>/pycsep. We recommend using conda to install the development environment.

git clone<YOUR_GITHUB_USERNAME>/pycsep.git
cd pycsep
conda env create -f requirements.yml
conda activate csep-dev
pip install -e .[all]
# Allow sync with default repository
git remote add upstream

This ensures to have a clean installation of pyCSEP and the required developer dependencies (e.g., pytest, sphinx). Now you can pull from upstream using git pull upstream master to keep your copy of the repository in sync with the latest commits.