Find the Files Missing from a Wheel

The wheel in the article above left out templates/report.html, and the tests never noticed. A check in CI can catch that before a release. It compares the files in your package folder with the files in the wheel.

missing_from_wheel(wheel, ["mypkg/__init__.py", "mypkg/templates/report.html"])
# ["mypkg/templates/report.html"]

What to write

Fill in missing_from_wheel(wheel, package_files). wheel is an open zipfile.ZipFile. package_files lists the files in your package folder as paths relative to src/, such as mypkg/templates/report.html.

• wheel.namelist() returns the path of every file in the wheel, written the same way.
• Return each path in package_files that is not in the wheel, sorted.
• Skip compiled files. A compiled file is any path that ends in .pyc, or any path that goes through a __pycache__ folder. Python writes these when it runs your code, and they do not belong in a wheel.
• A file that is only in the wheel, such as one under mypkg-0.1.0.dist-info/, is not missing. Leave it out of the result.

What the driver reports

Keep build_wheel and solve as they are. solve writes a zip file in memory from wheel_files, opens it with zipfile and calls your function. The grader runs one file of code, so the driver writes the zip itself instead of running a real build. A real wheel is the same kind of zip file.

solve returns:

• missing: the list your function returned.
• complete: True when nothing is missing.