forms.py 文件源码

def clean_zip_file(self):
        """Open the zip file a first time, to check that it is a valid zip archive.
        We'll open it again in a moment, so we have some duplication, but let's focus
        on keeping the code easier to read!
        """
        zip_file = self.cleaned_data['zip_file']
        try:
            zip = zipfile.ZipFile(zip_file)
        except BadZipFile as e:
            raise forms.ValidationError(str(e))
        bad_file = zip.testzip()
        if bad_file:
            zip.close()
            raise forms.ValidationError('"%s" in the .zip archive is corrupt.' % bad_file)
        zip.close()  # Close file in all cases.
        return zip_file