Auto Include python import statements in vim /emacs?

In eclipse, there is this handy shorthand CTRL+SHIFT+o which will 开发者_运维问答auto include the import (include) statements which are needed based on the Class or module being used. Have you found any such plugin for vim or emacs?

Ropemacs has rope-auto-import, so that if you write

rmtree

and execute M-x rope-auto-import,

from shutil import rmtree

is inserted at the top of the file. You might want to avoid this though, because importing functions from modules may not be a very wise idea.

See this SO post for information on setting up ropemacs. The README (e.g. /usr/share/doc/python-ropemacs/README.txt.gz) that comes with ropemacs also has useful information for setting up the cache used by the ropemacs-auto-import command.

So I'm happy with this simple function that already saves me repeated movements. When I call my-python-import-add:

• I am asked what modules to import (I can give a comma-separated list like os, sys, from foo import bar, re)
• it inserts either an import xxx statements or the from … you typed.
• the imports are sorted.
• the point didn't move (of course).

So for example: M-x my-python-import-add RET os, sys, from foo import bar, requests gives me:

import os
import sys

import requests

from foo import bar

ps: found one caveat: you need to already have an import statement.

We rely on the isort python package:

pip install isort

and on the py-isort package (in Melpa),

so read their helps to check how to customize the sorting feature. I myself want a single import by line so I setted

(setq py-isort-options '("--force_single_line_imports"))

The function:

edit: I put it in a gitlab repo

update: now the prompt suggests the word at point by default

(require 's)  ;; melpa
(require 'dash)  ;; melpa

(require 'py-isort)  ;; melpa

(defun my-insert-import (to_insert)
  (newline)
  (if (s-starts-with? "from" (s-trim to_insert)) (insert (s-trim to_insert))
    (insert "import " to_insert))
  )

(setq py-isort-options '("--force_single_line_imports"))


(defun python-import-add (to_import)
  "Adds an import statement for every given module. Can give a comma-separated list of modules, like:
M-x my-python-import-add RET os, sys, from foo import bar, re RET"
  (interactive "swhat to import ? ")
  (beginning-of-buffer)
  (save-excursion
    (search-forward-regexp "\\(^from \\)?.*import [a-z]+")  ;; if not found ?
    (end-of-line)
    ;; split the arguments by spaces:
    (setq to_insert (s-split "," to_import))
    ;; insert each elt of the list:
    (-map 'my-insert-import to_insert)
    ;; sort the imports: (set your py-isort options. See isort -h)
    (py-isort)
    )
  )

What I will maybe do now is grab the thing-at-point (like sys.argv) and suggest it as a default. =>done

I'm confident we can have a useful and complete auto-import feature in emacs.