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python/pylint: Change directory to project root

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Pylint only [checks for pylintrc] (and .pylintrc) files in the packages
aboves its current directory before falling back to user and global
pylintrc.  For projects with a src dir, running pylint from the
directory containing the file will not use the project pylintrc.

Adopt the convention used by many other Python linters of running from
the project root, which solves this issue.  Add pylintrc and .pylintrc
to FindProjectRoot.  Update docs.

[checks for pylintrc]: https://github.com/PyCQA/pylint/blob/pylint-2.2.2/pylint/config.py#L106

Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
This commit is contained in:
Kevin Locke
2019-02-17 10:12:24 -07:00
parent c3d4e0983b
commit 3300b1aca7
4 changed files with 24 additions and 10 deletions
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14
ale_linters/python/pylint.vim
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@@ -17,9 +17,17 @@ function! ale_linters#python#pylint#GetExecutable(buffer) abort
endfunction
function! ale_linters#python#pylint#GetCommand(buffer) abort
let l:cd_string = ale#Var(a:buffer, 'python_pylint_change_directory')
\ ? ale#path#BufferCdString(a:buffer)
\ : ''
let l:cd_string = ''
if ale#Var(a:buffer, 'python_pylint_change_directory')
" pylint only checks for pylintrc in the packages above its current
" directory before falling back to user and global pylintrc.
" Run from project root, if found, otherwise buffer dir.
let l:project_root = ale#python#FindProjectRoot(a:buffer)
let l:cd_string = l:project_root isnot# ''
\ ? ale#path#CdString(l:project_root)
\ : ale#path#BufferCdString(a:buffer)
endif
let l:executable = ale_linters#python#pylint#GetExecutable(a:buffer)