I'm doing this instead..

```
# There are many locations for the __init__.pyc file so attempt to find
    #   any of them
    exists = [
        os.path.exists(script.site_packages_path/"INITools/__init__.pyc"),
    ]

    exists += glob.glob(
        script.site_packages_path/"INITools/__pycache__/__init__*.pyc"
    )

    assert any(exists)
```

Since ``imp.cache_from_source`` isn't available on every Python and some OSs package differently.