Ale: Key not present in Dictionary: ale_python_auto_pipenv

[sbds]

VIM version

VIM - Vi IMproved 8.1 (2018 May 18, compiled Sep 19 2018 09:43:59)
Included patches: 1

Operating System: CentOS 7

:ALEInfo

Current Filetype: python
Available Linters: ['flake8', 'mypy', 'prospector', 'pycodestyle', 'pyflakes', 'pylint', 'pyls', 'pyre', 'vulture']
Enabled Linters: ['flake8', 'mypy', 'pylint']
Suggested Fixers:
'add_blank_lines_for_python_control_statements' - Add blank lines before control statements.
'autopep8' - Fix PEP8 issues with autopep8.
'black' - Fix PEP8 issues with black.
'isort' - Sort Python imports with isort.
'remove_trailing_lines' - Remove all blank lines at the end of a file.
'trim_whitespace' - Remove all trailing whitespace characters at the end of every line.
'yapf' - Fix Python files with yapf.
Linter Variables:
let g:ale_python_flake8_auto_pipenv = 0
let g:ale_python_flake8_change_directory = 1
let g:ale_python_flake8_executable = 'flake8'
let g:ale_python_flake8_options = ''
let g:ale_python_flake8_use_global = 0
let g:ale_python_mypy_auto_pipenv = 0
let g:ale_python_mypy_executable = 'mypy'
let g:ale_python_mypy_ignore_invalid_syntax = 0
let g:ale_python_mypy_options = ''
let g:ale_python_mypy_use_global = 0
let g:ale_python_pylint_auto_pipenv = 0
let g:ale_python_pylint_change_directory = 1
let g:ale_python_pylint_executable = 'pylint'
let g:ale_python_pylint_options = ''
let g:ale_python_pylint_use_global = 0
Global Variables:
let g:ale_cache_executable_check_failures = v:null
let g:ale_change_sign_column_color = v:null
let g:ale_command_wrapper = v:null
let g:ale_completion_delay = v:null
let g:ale_completion_enabled = 0
let g:ale_completion_max_suggestions = v:null
let g:ale_echo_cursor = 1
let g:ale_echo_msg_error_str = 'Error'
let g:ale_echo_msg_format = '[%linter%] %s [%severity%]'
let g:ale_echo_msg_info_str = 'Info'
let g:ale_echo_msg_warning_str = 'Warning'
let g:ale_enabled = 1
let g:ale_fix_on_save = 0
let g:ale_fixers = {'javascript': ['eslint']}
let g:ale_history_enabled = 1
let g:ale_history_log_output = 1
let g:ale_keep_list_window_open = v:null
let g:ale_lint_delay = 200
let g:ale_lint_on_enter = 0
let g:ale_lint_on_filetype_changed = 0
let g:ale_lint_on_save = 1
let g:ale_lint_on_text_changed = 'always'
let g:ale_lint_on_insert_leave = 0
let g:ale_linter_aliases = {}
let g:ale_linters = {'javascript': ['standard']}
let g:ale_linters_explicit = 0
let g:ale_list_window_size = v:null
let g:ale_list_vertical = v:null
let g:ale_loclist_msg_format = v:null
let g:ale_max_buffer_history_size = 20
let g:ale_max_signs = v:null
let g:ale_maximum_file_size = v:null
let g:ale_open_list = v:null
let g:ale_pattern_options = v:null
let g:ale_pattern_options_enabled = v:null
let g:ale_set_balloons = 0
let g:ale_set_highlights = 1
let g:ale_set_loclist = 1
let g:ale_set_quickfix = 0
let g:ale_set_signs = 1
let g:ale_sign_column_always = v:null
let g:ale_sign_error = v:null
let g:ale_sign_info = v:null
let g:ale_sign_offset = v:null
let g:ale_sign_style_error = v:null
let g:ale_sign_style_warning = v:null
let g:ale_sign_warning = v:null
let g:ale_statusline_format = v:null
let g:ale_type_map = v:null
let g:ale_use_global_executables = v:null
let g:ale_warn_about_trailing_blank_lines = 1
let g:ale_warn_about_trailing_whitespace = 1
Command History:

What went wrong

Error detected while processing function ale#Lint[34]..ale#engine#RunLinters[14]..103_RunLinter[4]..ale#linter#GetE
xecutable[1]..ale_linters#python#flake8#GetExecutable[1]..ale#Var:
line 4:
E716: Key not present in Dictionary: ale_python_auto_pipenv

Reproducing the bug

1. I updated ALE to latest version
2. Opened any Python file, error occurs

[blayz3r]

+1

[gatspy]

same issue, how to solve it?

Error detected while processing function ale#events#LintOnEnter[5]..ale#Queue[49]..ale#Lint[34]..ale#engine#RunLinters[14]..<SNR>174_RunLinter[4]..ale#linter#GetExecutable[1]..ale_lin
ters#python#flake8#GetExecutable[1]..ale#Var:
line    4:
E716: Key not present in Dictionary: ale_python_auto_pipenv
E116: Invalid arguments for function get(l:vars, l:full_name, g:[l:full_name])
E15: Invalid expression: get(l:vars, l:full_name, g:[l:full_name])

[wookayin]

1719 broke this. Checking out temporarily to HEAD^1 (e82bcdb) won't have this bug.

[danielwe]

The offending lines seem to be, from ale_linters/python/flake8.vim:

function! ale_linters#python#flake8#GetExecutable(buffer) abort
    if (ale#Var(a:buffer, 'python_auto_pipenv') || ale#Var(a:buffer, 'python_flake8_auto_pipenv'))
    \ && ale#python#PipenvPresent(a:buffer)
        return 'pipenv'
    endif
...

The call to ale#Var(a:buffer, 'python_auto_pipenv') fails because that parameter has not been set yet; it is set in the file autoload/ale/python.vim, but the autoloading of that script has not yet been triggered when python linters are first invoked.

Possible solutions:

• Name the variable ale#python#auto_pipenv instead. This would trigger the autoload, but would either be a very special case, or (for consistency) require a larger redesign of the Set and Var mechanism and the documented config interface, so I guess it's not really an option.
• Explicitly set python_auto_pipenv at the top of each ale_linters/python/[linter].vim file.
• Rewrite ale_linters#python#[linter]#GetExecutable() such that it deliberately triggers the requisite autoload before looking up the variable. For example, the condition could be reordered:

    if ale#python#PipenvPresent(a:buffer)
    \ && (ale#Var(a:buffer, 'python_auto_pipenv') || ale#Var(a:buffer, 'python_flake8_auto_pipenv'))
...

Another option is to move the call to ale#python#FindExecutable() (from further down in the function) up to the top. In either case one ends up always calling a function that is only actually needed in one of three branches.

[w0rp]

Just set values for the variables. I'll do that now.

[w0rp]

Fixed. All of your solutions above were more complex than they needed to be, we just needed to set a default for the option in plugin/ale.vim.

[sbds]

This fixed me. Thank you.