Python, unzip from stdin

Question

I have a python script that does AES decryption of an encrypted zip archive 'myzip.enc' I'm trying to use the output of that decryption and use it as stdin for "unzip" command.

Here is my code:

decrypt = subprocess.Popen(['openssl', 'enc', '-d', '-aes-256-cbc', '-md', 'sha256', '-in', '{}'.format(inputFile), '-pass', 'pass:{}'.format(passw_hash)], stdout=subprocess.PIPE)
    decompress = subprocess.Popen(['unzip', '-j', '-d', path_dict], stdin=decrypt.stdout)

inputFile is my encrypted archive 'myzip.enc' passw_hash is the AES password path_dict is a folder path where to extract the decrypted zip

I'm getting this in my terminal:

Usage: unzip [-Z] [-opts[modifiers]] file[.zip] [list] [-x xlist] [-d exdir]
  Default action is to extract files in list, except those in xlist, to exdir;
  file[.zip] may be a wildcard.  -Z => ZipInfo mode ("unzip -Z" for usage).

  -p  extract files to pipe, no messages     -l  list files (short format)
  -f  freshen existing files, create none    -t  test compressed archive data
  -u  update files, create if necessary      -z  display archive comment only
  -v  list verbosely/show version info       -T  timestamp archive to latest
  -x  exclude files that follow (in xlist)   -d  extract files into exdir
modifiers:
  -n  never overwrite existing files         -q  quiet mode (-qq => quieter)
  -o  overwrite files WITHOUT prompting      -a  auto-convert any text files
  -j  junk paths (do not make directories)   -aa treat ALL files as text
  -U  use escapes for all non-ASCII Unicode  -UU ignore any Unicode fields
  -C  match filenames case-insensitively     -L  make (some) names lowercase
  -X  restore UID/GID info                   -V  retain VMS version numbers
  -K  keep setuid/setgid/tacky permissions   -M  pipe through "more" pager
See "unzip -hh" or unzip.txt for more help.  Examples:
  unzip data1 -x joe   => extract all files except joe from zipfile data1.zip
  unzip -p foo | more  => send contents of foo.zip via pipe into program more
  unzip -fo foo ReadMe => quietly replace existing ReadMe if archive file newer

Is there something wrong in my unzip command? Thanks.

---

Edit: It seems from Here that it is impossible to PIPE an output of zip archive to the unzip command due to the fact that unzip needs to read some info from the physical file.

My workaround ended up being this code which works:

 output = open('{}.zip'.format(inputFile), "wb")
    decrypt = subprocess.Popen(['openssl', 'enc', '-d', '-aes-256-cbc', '-md', 'sha256', '-in', '{}'.format(inputFile), '-pass', 'pass:{}'.format(passw_hash)], stdout=output)
decompress = subprocess.Popen(['unzip', '{}.zip'.format(inputFile), '-d', path_dict[0]])

Is there a way to unzip and delete the zip archive on the same time or add an rm to the decompress line ?

Thanks.