- `SystemExit` doesn't require importing the `sys` module
- `exit()` depends on the `site` module (for this reason its usage is discouraged in production code)
Signed-off-by: JoeLametta <JoeLametta@users.noreply.github.com>
This commit makes it possible to run whipper directly with
`python -m whipper` from wither within the source directory
or with `PYTHONPATH` set to the source directory.