Fixing gi import warnings (#288)

[raelgc]

Fixes #288

[raelgc]

@immerrr Can you test if these changes will work on Ubuntu 12.04?

[immerrr]

1. it appears that the proper way of invoking require_version is gi.require_version, not gi.repository.require_version:

$ /usr/bin/python3 -c "from gi.repository import require_version"
ERROR:root:Could not find any typelib for require_version
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: cannot import name require_version
$ /usr/bin/python3 -c "from gi import require_version"

1. notify is OK:

$ /usr/bin/python3 -c "from gi import require_version; print(require_version('Notify', '0.7'))"
None

1. Unity 7.0 is unavailable, only 5.0 works:

$ /usr/bin/python3 -c "from gi import require_version; print(require_version('Unity', '7.0'))"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python3/dist-packages/gi/__init__.py", line 52, in require_version
    (namespace, version))
ValueError: Namespace Unity not available for version 7.0
$ /usr/bin/python3 -c "from gi import require_version; print(require_version('Unity', '5.0'))"
None

[raelgc]

@immerrr Thank you for the quick reply!

I tried first with gi.require_version, but on 16.04 I got this error: NameError: name 'gi' is not defined. So first importing the require_version worked.

But, unfortunately appears to not works in 12.04 (not sure in 14.04).

About Unity version: so, version is 5 for Ubuntu 12.04. Not sure if we add a complicated checking here or if we keep 12.04 in a separate branch.

[immerrr]

NameError: name 'gi' is not defined means you need to do import gi before doing gi.require_version.

[stieg]

Here is what I see on my Fedora box:

[stieg@Lucious scudcloud]$ python3 -m scudcloud 
Traceback (most recent call last):
  File "/usr/lib64/python3.4/runpy.py", line 170, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib64/python3.4/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/stieg/Devel/stieg/scudcloud/scudcloud/__main__.py", line 16, in <module>
    import scudcloud.scudcloud as sca
  File "/home/stieg/Devel/stieg/scudcloud/scudcloud/scudcloud.py", line 28, in <module>
    gi.require_version('Unity', '7.0')
  File "/usr/lib64/python3.4/site-packages/gi/__init__.py", line 102, in require_version
    raise ValueError('Namespace %s not available' % namespace)
ValueError: Namespace Unity not available

[raelgc]

Fixed in #254