SageMath Wiki
This is the wiki for the Sage  Mathematics Software System project. This is mainly used by developers for organization of e.g. SageDays and discussion of longterm projects. Since it is a wiki, pages should be made to last over many, and frequent, changes. If an external link is made, please attach relevant files/content to avoid broken links.
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Information 
Since version 9.0, Sage is using Python 3. See Python3Switch for more information. 
Contents
SageDays, Sage Workshops, other activities
Past and future Workshops
 Upcoming Workshops
Sage Days 113  Symbolic Computation: Algorithms, Learning and Engineering  Gebze Technical University, Istanbul, Turkey, 1014 August 2022
All Workshops, including past and future Sage Days, Bug Days, Doc Days, Review Days, Education Days, and some other Sagerelated events.
Sage Release Tours (version 9.0 and later)
Google Summer of Code
Hosting a workshop
How To Host A Sage Days  Advice to future hosts
How to Spread Sage During a Workshop  Advice to future hosts
Major external (editable) related pages
URL 
Description 
Official homepage of SageMath 

Where development happens 

dummy package on PyPi 

Arch Linux wiki 
People
The most upto date list of Sage developers is on our list of developers on the Sage trac wiki.
Overview of (many) Sage developers on a world map
Mailing Lists / Chat Rooms
sagesupport, sagedevel, sagerelease, sageannouncements, sageedu for teaching using Sage, sagefinance for finance, sagecodingtheory for coding theory, sagent for number theory, and sagecombinatdevel.
Zulip group chat server for realtime collaboration on Sage (like Slack). Fairly lowactivity but more than IRC.
IRC channel: #sagemath on freenode (chat.freenode.net)
The Sage website contains links to other discussion mailing lists.
Development
Development is handled using "tickets" on the trac server.
The main developer doc is the Developers' Guide.
Release notes (higher level than change logs) are collaboratively prepared at ReleaseTours.
Development/project infrastructure
Special Discussion Pages
Features
Demonstrations of Graphical Capabilities
Packages
Newstyle SPKGs
There is a single authoritative place to learn about the specific set of packages (newstyle SPKGs) that Sage uses: The SAGE_ROOT/build/pkgs/ directory in the Sage distribution. Each SPKG is represented by a subdirectory. The structure of these subdirectories is explained in the Developer's Guide.
Since Sage 9.2, the spkg section of the Sage reference manual is automatically generated from the information in SAGE_ROOT/build/pkgs/. (Trac #29655 improves the formatting of this information.)
Use the following shell commands below to access the information from the SAGE_ROOT/build/pkgs directory of your copy of Sage:
Standard packages: ./sage standard
Installed packages: ./sage installed
Optional packages available: ./sage optional
Experimental packages available: ./sage experimental
Details about an SPKG: ./sage info <SPKG>
For some advanced package tools, use ./sage package
External packages
Obsolete, duplicate, outdated
SageWiki page "spkg"  now just links to the spkg section of the reference manual
sagemath.org page "Components"  now just links to the spkg section of the reference manual
 everything about oldstyle SPKGs  outdated, do not use
About this wiki
Editing the wiki. Page editing uses the MoinMoin syntax. To edit the wiki, log in using your sagetrac account. Getting an account involves convincing a human by email that you not a spammer.
SageWiki maintenance. The SageWikiMaintenance page attempts to reorganize the wiki, which has accumulated many outdated pages.
License and Copyright. Contributions to the Sage wiki and to the Sage documentation are licensed under the Creative Commons 3.0 BYSA license. By contributing, you agree to place your contribution under that license.