pylint-venv provides a Pylint init-hook to use the same Pylint installation with different virtual environments.
Pylint does not respect the currently activated virtualenv if it is not installed in every virtual environment individually. This module provides a Pylint init-hook to use the same Pylint installation with different virtual environments.
pip install pylint-venv
Add the following to your ~/.pylintrc:
[MAIN] init-hook= try:
import pylint_venvexcept ImportError: passelse: pylint_venv.inithook()
The hook will then be used automatically if
a virtualenv without pylint is active,
or a Conda environment without pylint is active,
or no environment is active but your CWD contains virtualenv directory.
Anything listed in the PYLINT_VENV_PATH environment variable is considered a virtualenv directory. The default, if the variable is unset, is .venv. Use a colon (:) as path separator. Example for checking directories .venv and .virtualenv:
You can also call the hook via a command line argument:
$ pylint --init-hook="import pylint_venv; pylint_venv.inithook()"
This way you can also explicitly set an environment to be used:
$ pylint --init-hook="import pylint_venv; pylint_venv.inithook('$(pwd)/env')"
If pylint itself is installed in a virtualenv, then you can ignore it by passing force_venv_activation=True to force the activation of a different virtualenv:
$ pylint --init-hook="import pylint_venv; pylint_venv.inithook(force_venv_activation=True)"
This will try to automatically detect virtualenv and activate it.
pylint_venv fails to import
Most likely pylint-venv is not installed in the same virtual environment as pylint. Either make sure to ensure pylint-venv into the same virtual environment as pylint, or add the appropriate path in the init hook:
import sys sys.path.append("/path/to/installation/folder/of/pylint_venv")
pylint_venv breaks parsing with tools
When tools call pylint with
-f json, an extra line may break the parser, as the
output is no longer valid json. To avoid printing “using venv …”, pass
$ pylint -f json --init-hook="import pylint_venv; pylint_venv.inithook(quiet=True)"
Virtual environment does not get used (installed modules are reported as ‘unable to import’)
Most likely the virtual environment does not get activated because pylint itself
runs in a virtual environment. You can force the activation of the virtual
environment with the
force_venv_activation=True flag to the
Homebrew installs pylint into a separate virtual environment, thus you will need to set the force_venv_activation=True flag. This also means, that pylint_venv will be in a different search path and you must add the proper path to sys.path. You can use the following configuration adjusted to your Python version:
[MAIN] init-hook= import sys sys.path.append("/usr/local/lib/python3.8/site-packages") try:
import pylint_venvexcept ImportError: passelse: pylint_venv.inithook(force_venv_activation=True)
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