• Autocompletion library for Python
• Embeddable in your editor / IDE / debugger
• Plugins for Vim, Emacs, Sublime Text 2/3
  
  
• Runs on Python 2.6+ and 3.2+
• Understands Python 2 and 3
  
  
• LGPL
• Good docs
• Tests with 94% coverage
  
  
• It's quite good

• Can deal with complex structures
• Handles syntax errors and wrong indentation
• Support for Virtualenv
• Type hinting with Sphinx and Epydoc docstrings
• Easily embeddable

• Builtins
• Multiple returns / yields
• Indexing (lists, dictionaries)
  
• Exceptions
• Absolute / relative / star imports
• Context managers
• *args / **kwargs
  
• Decorators / lambdas / closures
• Generators / iterators
• Some descriptors
• Some magic methods
  
• List manipulation
• Function annotations
• Simple sys.path modifications
• ...and more

• Metaclasses
• setattr()
• __import__()
• Writing to globals(), locals(), object.__dict__
• Evaluating if / while

import json

class Spam(object):
    global json
    ham = json
def spamify():
    return Spam 
bacon = getattr(spamify()(), 'ham')
print bacon.# <tab>

• "Jedi Mixins" can be written
• Python "mock implementation" of real library
• Mostly used for binary imports, e.g. SQLite3

• Vim
  https://github.com/davidhalter/jedi-vim
• Vim (alternative)
  https://github.com/Valloric/YouCompleteMe
• Emacs
  https://github.com/tkf/emacs-jedi
• SublimeText 2/3
  https://github.com/svaiter/SublimeJEDI
• wdb (web debugger)
  https://github.com/Kozea/wdb
  

• Kate editor
  http://kate-editor.org/
  
• Spyder IDE
  https://code.google.com/p/spyderlib/