Don't write Python bytecode when invoking pytest #533
Merged
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This should prevent pytest invocations via ament_add_pytest_test from writing
__pycache__
directories into the package sources.I'm specifically avoiding bumping
ament_cmake_pytest
's minimum CMake version to 3.15 by using CMake'slist(PREPEND)
function: https://cmake.org/cmake/help/latest/command/list.html#prependSee also: colcon/colcon-core#611
https://docs.python.org/3/using/cmdline.html#envvar-PYTHONDONTWRITEBYTECODE