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The Sage Repository On Github Developer Guide Sagemath

Leo Migdal
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the sage repository on github developer guide sagemath

The center of Sage development is the SageMath organization on GitHub, which consists of many repositories related with Sage. The most important one among them is of course the Sage repository, which we call “the Sage repo” for short. To share your work on Sage, you need a GitHub account. If you do not have one yet, choose a username and create an account. In the following, we assume your username “alice”. So you always read your own username if you see “alice”.

GitHub provides a command-line interface, the GitHub CLI, that can be used instead of the web interface. The central component of the GitHub CLI is the gh command that you can use in your terminal. The page github_cli: Command-line interface for GitHub documents how to install the gh command for your platform. Or see GitHub CLI from GitHub. You have to authenticate to your GitHub account to allow gh command to interact with GitHub. Typically the authorization proceeds as follows:

Sage is open source mathematical software released under the GNU General Public Licence GPLv2+, and includes packages that have compatible software licenses. People all around the globe have contributed to the development of Sage. Full documentation is available online. Those who are impatient may use prebuilt Sage available online from any of without local installation. Otherwise read on.

The Sage Installation Guide provides a decision tree that guides you to the type of installation that will work best for you. This includes building from source, obtaining Sage from a package manager, using a container image, or using Sage in the cloud. This README contains self-contained instructions for building Sage from source. This requires you to clone the git repository (as described in this README) or download the sources in the form of a tarball. Everybody who uses Sage is encouraged to contribute something back to Sage at some point. You could:

Contribute a useful tutorial for a mathematical topic Translate an existing document to a new language Create a new class, create a fast new C library, etc. This document tells you what you need to know to do all the above, from reporting bugs to modifying and extending Sage and its documentation. We also discuss how to share your new and modified code with other Sage users around the globe. We continue our introduction to Sage development from Development Walk-through.

We discuss how to push your local changes to your fork of the GitHub Sage repository so that your changes can be reviewed for inclusion in Sage. Before proceeding, check that you have origin and upstream remotes right: Alice creates a new local branch and commits changes to the Sage source files. Alice pushes the local branch to the remote origin, her fork of the Sage repo on GitHub, and with it creates a PR to the Sage repo. When ready, Alice sets the PR to needs review status. Bob, a developer acting as reviewer, examines the PR, looks through the changes, leaves comments on the PR, and requests fixes (needs work).

There was an error while loading. Please reload this page. There was an error while loading. Please reload this page. Everybody who uses Sage is encouraged to contribute something back to Sage at some point. You could:

Implement a new function or create a new class Contribute a useful tutorial for a mathematical topic Translate an existing document to a new language Upgrade a package, create a fast new C library, etc. See the current documentation at http://sagemath.github.io/git-developer-guide/ To build the manual you need Python and Sphinx installed.

If you have Sage, you can use a Sage shell (run sage -sh). The developer manual is in the /developer directory in the repository root. Edit files there to modify the docs. Use the build script to build the html documentation. Use the publish script to copy the documentation to the github pages (the web page hosted on github). Git is a tool to exchange commits (organized into branches) with other developers.

As a distributed revision control system, it does not have the notion of a central server. The Sage trac server is just one of many possible remote repositories from your point of view. This lets you use and experiment with different ways to interact with other developers. In this chapter, we describe some common ways to develop for Sage. For simplicity, let us assume two developers (Alice and Bob) are collaborating on a ticket. The first step of opening the ticket is always the same, and could be performed by either Alice or Bob or a third person.

Alice creates a new local branch and commits changes to the Sage sources. Alice uploads her branch to the trac server. This fills in the “Branch:” field with her remote branch name u/alice/description. Bob downloads Alice’s branch, looks through the source, and leaves a comment on the ticket about a mistake in Alice’s code. This section is a concise overview of the Sage development process. We will see how to make changes to the Sage source code and record them in the Git revision control system.

In the sections of the following chapter Working on GitHub, we will look at communicating these changes back to the Sage project. All changes to Sage source code have to go through the Sage repository on GitHub. For examples, we assume your name Alice. Always replace it with your own name. First, open a shell (for instance, Terminal on Mac) and check that Git works: Don’t worry about the giant list of subcommands.

You really only need a handful of them for effective development, and we will walk you through them in this guide. If you got a “command not found” error, then you don’t have Git installed; now is the time to install it. See Installing Git for instructions. SageMath is a free, open-source mathematical software system based on the Python programming language. It covers a wide range of mathematical areas including algebra, calculus, number theory, geometry, graph theory, combinatorics and much more. It is used to perform calculations, graphing, simulations, and modeling in physics, cryptography, coding theory, optimization and indeed in all of mathematical fields.

Sage, as we call SageMath for short, started with the aim of providing a free alternative to proprietary mathematical software such as Magma, Maple, Mathematica and Matlab. Thus it combines the power of many existing open-source packages, and provides an integrated platform for open computing, education, and research. Now the SageMath project acts as an umbrella project of open-source mathematical software. The developer community of the SageMath project is constantly improving Sage and related packages, and we invite you to help improve the source code, or contribute in your own way. We heartily welcome all kinds of contributions, technical or non-technical, from adding stars to our repositories, reporting bugs or typos, commenting to issues, or creating Pulling Requests, to donations. We provide a warm and supportive environment in which contributors experience large-scale open-source software development for humanity.

💕 Contents of github.com/sagemath: In addition to the main repository sagemath/sage, this org also hosts the source code of our website www.sagemath.org in website and publications and repositories of closely related projects maintained by SageMath... Contents of gitlab.com/sagemath: Our sister org at GitLab.com hosts or archives a few other closely related projects maintained by SageMath developers: lcalc, symmetrica, zn_poly.

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