zip_open 0.2.0

Features

• Open file from nested zip archive file path/name.

• Open file from nested zip archive file-like-object.

Using sample1: open the file from zip file

packages1.zip is:

packages1.zip
  + file1.txt

Open file1.txt:

>>> from zip_open import zopen
>>> fobj = zopen('packages1.zip/file1.txt')
>>> data = fobj.read()
>>> print(data)
I am file1.txt, ok.

You can specifiy zopen subpath args:

>>> fobj = zopen('packages1.zip', 'file1.txt')
>>> print(fobj.read())
I am file1.txt, ok.

These code samples equivalent to below code:

>>> from zipfile import ZipFile
>>> zipobj = ZipFile('packages1.zip')
>>> data = zipobj.read('file1.txt')
>>> print(data)
I am file1.txt, ok.

Using sample2: open the file from nested zip file

packages2.zip is:

packages2.zip
  + data2.zip
     + file2.txt

Open file2.txt:

>>> from zip_open import zopen
>>> fobj = zopen('packages2.zip/data2.zip/file2.txt')
>>> print(fobj.read())
I am file2.txt, ok.

If you want to open from file-like-object, you can call:

>>> zip_fileobj = open('packages2.zip', 'rb')
>>> fobj = zopen(zip_fileobj, 'data2.zip/file2.txt')
>>> print(fobj.read())
I am file2.txt, ok.

then you also call:

>>> from StringIO import StringIO
>>> zip_payload = open('packages2.zip', 'rb').read()
>>> zip_fileobj = StringIO(zip_payload)
>>> fobj = zopen(zip_fileobj, 'data2.zip/file2.txt')
>>> print(fobj.read())
I am file2.txt, ok.

Using sample3: open the file included in package oneself

packages3.zip is:

packages3.zip
  + foo.py
  + file1.txt
  + data3.zip
     + file3.txt

foo.py:

import os
from zip_open import zopen

def loader(filename):
    fobj = zopen(os.path.join(os.path.dirname(__file__), filename))
    return fobj

execute loader() from interactive shell:

>>> import sys
>>> sys.path.insert(0, 'packages3.zip')
>>> import foo
>>> fobj = foo.loader('file1.txt')
>>> print(fobj.read())
I am file1.txt, ok.
>>> fobj = foo.loader('data3.zip/file3.txt')
>>> print(fobj.read())
I am file3.txt, ok.

Requirements and dependencies

• Requirement: Python 2.4 or later

• Dependency: Nothing.

ToDo

• Add tar.gz file support.

• Add using sample document for egg archive.

• Support Python3

• Add module import feature.

History