code: def del_stream(self, bucket, label):
          '''Delete a bitstream. This needs more testing - file deletion in a zipfile
          is problematic. Alternate method is to create second zipfile without the files
          in question, which is not a nice method for large zip archives.
          '''
          if self.exists(bucket, label):
              name = self._zf(bucket, label)
              #z = ZipFile(self.zipfile, self.mode, self.compression, self.allowZip64)
              self._del_stream(namef del_stream(self, bucket, label):
          '''Delete a bitstream. This needs more testing - file deletion in a zipfile
          is problematic. Alternate method is to create second zipfile without the files
          in question, which is not a nice method for large zip archives.
          '''
          if self.exists(bucket, label):
              name = self._zf(bucket, label)
              #z = ZipFile(self.zipfile, self.mode, self.compression, self.allowZip64)
              self._del_stream(name)
docs: Delete a bitstream. This needs more testing - file deletion in a zipfile
          is problematic. Alternate method is to create second zipfile without the files
          in question, which is not a nice method for large zip archives.