Invalid type while parsing encrypted 7z file

[unconverged]

Hello! I'm trying to use py7zlib to read from an encrypted 7z file.

Here is my code:

import py7zlib

fp = open('12313213.7z', 'rb')
archive = py7zlib.Archive7z(fp)

Here is the sample file (the zip archive contains the target 7z file, becasue GitHub does not allow to attach 7z's, I'm not trying to open zip file with pylzma, of course): 12313213.zip

It produces the following error:

Traceback (most recent call last):
  File "/venv/main.py", line 4, in <module>
    archive = py7zlib.Archive7z(fp)
  File "\venv\lib\site-packages\py7zlib.py", line 811, in __init__
    self.header = Header(buffer)
  File "\venv\lib\site-packages\py7zlib.py", line 547, in __init__
    self.files = FilesInfo(file)
  File "\venv\lib\site-packages\py7zlib.py", line 527, in __init__
    raise FormatError('invalid type %r' % (typ))
py7zlib.FormatError: invalid type b'\x19'

I'm using Windows 10 x64 (Python is x32), Python 3.4.

[fancycode]

I know it's been some time, but could you please check if this is working with the latest master? After fixing #31 and implementing LZMA2 in #51 I can't reproduce this with the file you provided.

Feel free to reopen with a new sample file if this is still an issue.