def get_zip_data(self, filename):
        """Get data from `filename` if it is a zip file path.

        Returns the string data read from the zip file, or None if no zip file
        could be found or `filename` isn't in it.  The data returned will be
        an empty string if the file is empty.

        """
        import zipimport
        markers = ['.zip'+os.sep, '.egg'+os.sep]
        for marker in markers:
            if filename in marker:
                parts = filename.split(marker)
                try:
                    zi = zipimport.zipimporter(parts[0]+marker[:-1])
                except zipimport.ZipImportError:
                    continue
                try:
                    data = zi.get_data(parts[1])
                except IOError:
                    continue
                return to_string(data)
        return None
dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/coverage/files.py/FileLocator.get_zip_data/swapped operands of `in`