Jedi - an awesome autocompletion, static analysis and refactoring library for Python
Jedi is a static analysis tool for Python that is typically used in IDEs/editors plugins. Jedi has a focus on autocompletion and goto functionality. Other features include refactoring, code search and finding references.
Jedi has a simple API to work with. There is a reference implementation as a VIM-Plugin. Autocompletion in your REPL is also possible, IPython uses it natively and for the CPython REPL you can install it. Jedi is well tested and bugs should be rare.
Jedi can currently be used with the following editors/projects:
- Vim (jedi-vim, YouCompleteMe, deoplete-jedi, completor.vim)
- Visual Studio Code (via Python Extension)
- Emacs (Jedi.el, company-mode, 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. [see]
- Atom (autocomplete-python-jedi)
- GNOME Builder (with support for GObject Introspection)
- Gedit (gedi)
- wdb - Web Debugger
- Eric IDE (Available as a plugin)
- IPython 6.0.0+
- xonsh shell has jedi extension
and many more!
There are a few language servers that use Jedi:
Here are some pictures taken from jedi-vim:
Completion for almost anything:
Get the latest version from github (master branch should always be kind of stable/working).
Issues & Questions
Features and Limitations
Jedi's features are listed here: Features.
You can run Jedi on Python 3.6+ but it should also understand code that is older than those versions. Additionally you should be able to use Virtualenvs very well.
Tips on how to use Jedi efficiently can be found here.
You can find a comprehensive documentation for the API here.
Autocompletion / Goto / Documentation
There are the following commands:
The returned objects are very powerful and are really all you might need.
Autocompletion in your REPL (IPython, etc.)
Jedi is a dependency of IPython. Autocompletion in IPython with Jedi is therefore possible without additional configuration.
For a lot of forms of static analysis, you can try to use
jedi.Script(...).get_names. It will return a list of names that you can then filter and work with. There is also a way to list the syntax errors in a file:
Jedi supports the following refactorings:
There is support for module search with
jedi.Script.search, and project search for
jedi.Project.search. The way to search is either by providing a name like
foo or by using dotted syntax like
foo.bar. Additionally you can provide the API type like
class foo.bar.Bar. There are also the functions
There's a pretty good and extensive development documentation.
The test suite uses
pip install pytest
If you want to test only a specific Python version (e.g. Python 3.8), it is as easy as:
python3.8 -m pytest
For more detailed information visit the testing documentation.