Support for freezing software like py2exe, pyinstaller or Cx_Freeze.

[grossmj]

jsonschema doesn't work when "frozen", it will try to open the draft3.json and draft4.json files using invalid paths.

For instance, in the case of Cx_Freeze on Windows it will try to open something like: C:\path_to_build_dir\library.zip\schemas\draft3.json, obviously this fails because library.zip is a zip file, not a directory!

With this correction, the path would be C:\path_to_build_dir\schemas\draft*.json only when the application using jsonshema is frozen.

[grossmj]

I've just seen the previous pull request (#161) which may be more appropriate. Your call as long as it solves the freezing issue ;)

Thanks,

[Julian]

:) Yeah thanks for the alternate patch, appreciated!

I'd really like, here or in #161, a test to make sure this stays working (besides my comment there). Or, at least, to have one of these things run as a tox env. If either of you have any idea there I'd certainly like to hear it, otherwise I'll find some time to investigate.

[Julian]

Pushed out a fix, would love to hear if that fixes things for you.

Cheers.

[grossmj]

I am going to test tomorrow when I have access to my Windows with Cx_Freeze installed and will let you know the result.

Cheers,

[grossmj]

So far I get the following error. I'll investigate more when I have time, maybe something is required in the cx_freeze setup script.

  File "C:\Python33-32bit\lib\site-packages\jsonschema\_utils.py", line 57, in l
oad_schema
    data = pkgutil.get_data(__package__, "schemas/{0}.json".format(name))
  File "C:\Python33-32bit\lib\pkgutil.py", line 640, in get_data
    return loader.get_data(resource_name)
OSError: [Errno 0] Error: 'jsonschema\\schemas\\draft3.json'

[grossmj]

Ok I managed to make it work by adding "zip_includes" to my cx_Freeze setup script. No sure this is the correct way though.