Anybody has any idea why this is considered by Python standard zipfile module as a bad zip file: https://files.pythonhosted.org/packages/8a/bb/488841f56197b13700afd5658fc279a2025a39e22449b7cf29864669b15d/pyparsing-2.4.7-py2.py3-none-any.whl
Turns out it was encoding issues. Text encoding issues. Opening the file manually as binary mode before feeding it to ZipFile fixed it.
