Extract Japanese zip file

extract.py

import zipfile
import shutil

zipname = "brs.zip"

with zipfile.ZipFile(zipname) as z:
  for fileinfo in z.infolist():
    with z.open(fileinfo) as f:
      unicode_filename = fileinfo.filename.decode("shift_jis").encode("utf-8")
      with open(unicode_filename, "wb") as outputfile:
        shutil.copyfileobj(f, outputfile)