An autocompletion tool for Python that can be used for text editors.
If you have specific questions, please add an issue or ask on stackoverflow with the label python-jedi.
Jedi is a static analysis tool for Python that can be used in IDEs/editors. Its historic focus is autocompletion, but does static analysis for now as well. Jedi is fast and is very well tested. It understands Python on a deeper level than all other static analysis frameworks for Python.
Jedi has support for two different goto functions. It’s possible to search for related names and to list all names in a Python file and infer them. Jedi understands docstrings and you can use Jedi autocompletion in your REPL as well.
Jedi uses a very simple API to connect with IDE’s. There’s a reference implementation as a VIM-Plugin, which uses Jedi’s autocompletion. We encourage you to use Jedi in your IDEs. It’s really easy.
Jedi can currently be used with the following editors:
- Vim (jedi-vim, YouCompleteMe)
- Emacs (Jedi.el, elpy, anaconda-mode, ycmd)
- Sublime Text (SublimeJEDI [ST2 + ST3], anaconda [only ST3])
- TextMate (Not sure if it’s actually working)
- Kate version 4.13+ supports it natively, you have to enable it, though. [proof]
And it powers the following projects:
- wdb - Web Debugger
Here are some pictures taken from jedi-vim:
Completion for almost anything (Ctrl+Space).
Display of function/class bodies, docstrings.
Pydoc support (Shift+k).
There is also support for goto and renaming.
Get the latest version from github (master branch should always be kind of stable/working).
pip install jedi
Note: This just installs the Jedi library, not the editor plugins. For information about how to make it work with your editor, refer to the corresponding documentation.
You don’t want to use pip? Please refer to the manual.
Feature Support and Caveats
Jedi really understands your Python code. For a comprehensive list what Jedi understands, see: Features. A list of caveats can be found on the same page.
You can run Jedi on cPython 2.6, 2.7, 3.2, 3.3 or 3.4, but it should also understand/parse code older than those versions.
Tips on how to use Jedi efficiently can be found here.
You can find the documentation for the API here.
Autocompletion / Goto / Pydoc
Please check the API for a good explanation. There are the following commands:
The returned objects are very powerful and really all you might need.
Autocompletion in your REPL (IPython, etc.)
Static Analysis / Linter
To do all forms of static analysis, please try to use jedi.names. It will return a list of names that you can use to infer types and so on.
Linting is another thing that is going to be part of Jedi. For now you can try an alpha version python -m jedi linter. The API might change though and it’s still buggy. It’s Jedi’s goal to be smarter than classic linter and understand AttributeError and other code issues.
Jedi would in theory support refactoring, but we have never publicized it, because it’s not production ready. If you’re interested in helping out here, let me know. With the latest parser changes, it should be very easy to actually make it work.
There’s a pretty good and extensive development documentation.
The test suite depends on tox and pytest:
pip install tox pytest
To run the tests for all supported Python versions:
If you want to test only a specific Python version (e.g. Python 2.7), it’s as easy as
tox -e py27
Tests are also run automatically on Travis CI.
For more detailed information visit the testing documentation
- Integrated the parser of 2to3. This will make refactoring possible. It will also be possible to check for error messages (like compiling an AST would give) in the future.
- With the new parser, the evaluation also completely changed. It’s now simpler and more readable.
- Completely rewritten REPL completion.
- Added jedi.names, a command to do static analysis. Thanks to that sourcegraph guys for sponsoring this!
- Alpha version of the linter.
- Bugfix release, the last release forgot to include files that improve autocompletion for builtin libraries. Fixed.
- Memory Consumption for compiled modules (e.g. builtins, sys) has been reduced drastically. Loading times are down as well (it takes basically as long as an import).
- REPL completion is starting to become usable.
- Various small API changes. Generally this release focuses on stability and refactoring of internal APIs.
- Introducing operator precedence, which makes calculating correct Array indices and __getattr__ strings possible.
- Switched from LGPL to MIT license.
- Added an Interpreter class to the API to make autocompletion in REPL possible.
- Added autocompletion support for namespace packages.
- Add sith.py, a new random testing method.
- Much faster parser with builtin part caching.
- A test suite, thanks @tkf.
0.5 versions (2012)
- Initial development.
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