--- /dev/null
+" Python imports insert completion
+" Maintainer: Sergey Matveev <stargrave@stargrave.org>
+" License: GNU General Public License version 3 of the License or later
+"
+" This plugin is intended for quick import-line insertion.
+" For example you have got "from foo.bar import Baz" import somewhere in
+" your Git-versioned code. In another file you can write "Baz" and then
+" press <F3> in insert mode. Completion menu will show you suggestions
+" of all import lines from your code containing Baz import.
+"
+" If you have Pylint or Pyflakes output in quickfix window, containing
+" unfedined variables errors, then you can you :call AllImportCompl()
+" function. It will go through the quickfix list and find all possible
+" imports, sort them and insert under current cursor position.
+"
+" It uses external "git grep" call and assumes that "canonical" Python
+" import format is used (single import per line).
+" You can use http://www.git.stargrave.org/?p=pyimportcan.git;a=blob;f=pyimportcan.pl
+" utility to convert existing imports to that format.
+
+let s:git_grep_cmd = "git grep -H --line-number --ignore-case --no-color "
+
+function! python#importcompl#sortByLen(s1, s2)
+ if len(a:s1) == len(a:s2) | return a:s1 > a:s2 | endif
+ return 1 ? len(a:s1) > len(a:s2) : -1
+endfunction
+
+function! python#importcompl#do() abort
+ normal diw
+ let output = system(s:git_grep_cmd . '"^from .* import .*' . @" . '" -- "*.py" "**/*.py"')
+ let suggestions = []
+ for line in split(output, "\n")
+ if stridx(line, "unused-import") != -1 | continue | endif
+ let m = matchlist(line, '^.*:\d\+:\(.*\)$')
+ if len(m) == 0 | continue | endif
+ call insert(suggestions, m[1])
+ endfor
+ call sort(suggestions, "python#importcompl#sortByLen")
+ call uniq(suggestions)
+ call reverse(suggestions)
+ call complete(col('.'), suggestions)
+ return ''
+endfunction
+
+function! python#importcompl#all() abort
+ let output = system(s:git_grep_cmd . '"^from .* import" -- "*.py" "**/*.py"')
+ let imports = {}
+ for line in split(output, "\n")
+ if stridx(line, "unused-import") != -1 | continue | endif
+ for regexp in [
+ \'^.*:\d\+:\(from .* import \(\w\+\).*\)$',
+ \'^.*:\d\+:\(from .* import \w\+ as \(\w\+\).*\)$',
+ \]
+ let m = matchlist(line, regexp)
+ if len(m) == 0 | break | endif
+ let imports[m[2]] = m[1]
+ endfor
+ endfor
+ let lines = getloclist(winnr())
+ if len(lines) == 0 | let lines = getqflist() | endif
+ let result = []
+ for line in lines
+ let m = matchlist(line.text, '\(E0602\|F821\).*' . "'" . '\(\w\+\)' . "'$")
+ if len(m) == 0 || !has_key(imports, m[2]) | continue | endif
+ call insert(result, imports[m[2]])
+ endfor
+ call sort(result, "i")
+ call uniq(result)
+ call append(".", result)
+endfunction