Last Site Update: May 28th, 2024 | Latest Version: 12.1.0







PyDev PyDev on VSCode LiClipse

PyDev development

PyDev is open source and depends on your contributions! This may be in the form of bug fixes, answers on stackoverflow, new features...

Another option is financially supporting it at: Patreon (which provides a way to support it monthly and get rewards starting with $1).

Or through 1-time contributions at:


    PyDev Stripe Payments (at

Search PyDev-related content

Favorite at Eclipse Marketplace

Getting the code

The first thing you probably want to do in order to code in PyDev is getting its code.

Pre-requisites: Latest Eclipse SDK (get from:, Git and Java 11 (note that other versions of those may work too but details may differ a bit and there may be compilation errors that need to be manually fixed).

Before getting the code, there's an important step you need to make: Change your java 'compiler compliance-level' to 11. To do this, go to window > preferences > Java > compiler and change that setting to 11.


Get the code with Git from (ideally, fork it at github, create your own branch at the forked repository -- usually based in the master branch -- and later send a pull request on github so that the code can be merged back). Later, if you want to provide some other feature/bugfix, a new branch should be created again.

For those that haven't used github or are relatively new to it, below are resources that show how to make a contribution to a project in the manner described above (i.e. clone a project, create a branch, edit and send pull a request):

Then, in Eclipse, go to: File > Import > Existing projects into workspace and point it to the root of the repository you just downloaded (after importing, you may want to close the 2 mylyn-related projects if you don't have Mylyn locally).

Configuring the environment after getting the code

Important: Before doing any changes to the code it's important to note that you should create a new branch (usually based on the master branch) for doing code changes. See: for details on creating and using branches.

Note: for running the tests the file: org.python.pydev.core/tests/org.python.pydev.core/ must have the values set regarding to the computer that'll execute the tests.

Note that to make sure that PyDev keeps working on the long run, usually tests are required for pull requests (unless it's a really trivial change). Those reside in the project/tests source folder.

Note that if the head does not compile in git, send an e-mail to the pydev-code list at sourceforge to know what's happening.

Running it with your changes

After you download the contents and do changes to the code, you can do a Run As > Eclipse Application and a new Eclipse instance will be run with the changes you did.

Where to start?

Ok, this may be the most difficult thing... especially because answers may change a lot depending on what you want to do, so, below are outlined 2 different approaches:

  • Extending PyDev with Jython: recommended if you want to add some editor-related action or something that does not need implementing some Eclipse extension-point.
  • Extending PyDev in Java: if you want something that won't map to an action, this might be the better way to go.

To start in any of those approaches it might be worth taking a look at some Eclipse documentation, to try to grasp some of its concepts. One of the finest documentations for that is the Eclipse FAQ.

If you want to take the Jython approach, check out this article on how to do jython scripting in PyDev

For supporting a new Python based language, the first step would be creating a grammar that can parse it while providing a Python like AST. See: PyDev Grammar for instructions on that.

And that's it. If you have further questions about how to code in PyDev, direct your questions to the pydev-code list at sourceforge.

Creating a distribution locally

Provided that the steps were followed, PyDev should have the following structure:

/builders /
/features /org.python.pydev.feature
/plugins /org.python.pydev ... (other plugins)

Now, on to the build: PyDev uses maven to do the build, so, it should be a matter of using "mvn install".

There's a bat file at: builders/ which can be used as a base to know which environment variables are needed to do a build and /pom.xml (in the root) has more details on getting pre-requisites.

Contributing back

Create a pull request in github: Creating a pull request from a fork

Copyright: Brainwy Software Ltda, 2014-2021