Anaconda backend for company-mode.

You can install this package from Melpa:

M-x package-install RET company-anaconda RET

Add company-anaconda to allowed company-mode backends list

(eval-after-load "company"
 '(add-to-list 'company-backends 'company-anaconda))

Enable anaconda-mode in buffers you want to use company-anaconda

(add-hook 'python-mode-hook 'anaconda-mode)

If you want to see anaconda-mode completions together with ones comes from inferior python process use company grouped backend instead:

(eval-after-load "company"
 '(add-to-list 'company-backends '(company-anaconda :with company-capf)))

By default, company-anaconda uses Jedi's description for candidates as annotations in company-mode's list of completions. This usually tells you the type, and often the fully-qualified name, of a completion candidate. For example, for a candidate a_method, you may see the annotation <function: some_module.SomeClass.a_method>.

You can customize these annotations by setting company-anaconda-annotation-function to a function that takes a candidate string and returns the string company-mode should use as the annotation for that candidate. The candidate string may have the following text properties, which provide additional information about the candidate:

• description: Jedi's description, typically the type of completion optionally followed by a fully-qualified name for the candidate. For example, "class: foo.bar.Baz" or "statement".
• module-path: The path to the file that contains this candidate.
• line: The line within that file where the candidate is defined.
• docstring: The candidate's docstring.

Here is an example of an alternate annotation function that only returns the first letter of the candidate's description property (indicating its type) in chevrons:

(defun my-annotation-function (candidate)
  (let ((description (get-text-property 0 'description candidate)))
    (when description
      (concat "<" (substring description 0 1) ">"))))

(setq company-anaconda-annotation-function 'my-annotation-function)

For a candidate with a description such as function: some_module.SomeClass.a_method, this would make its annotation in company-mode's completion list simply <f>.