code: def open(self, name, mode, pwd=None):
      if pwd:
          raise NotImplemented("Encryption not supported.")
      if mode == "r":
          return self.readstream(name)
      else:
          return self.writestream(name)
  
imports: import os, time
  from libarchive import is_archive, Entry, SeekableArchive
  from zipfile import ZIP_STORED, ZIP_DEFLATED
label_desc: Use image node_id 4 for calling the ZipFile obj's underlying member method code with example usage: obj.open(name, mode, pwd) and returns: self, self