Python example

[nirgal]

When using python rrdtool.graph(), the locale environment is ignored and months names were always output in English.

The first patch add a hint in documentation pydoc rrdtool.graph about calling setlocale first.

The second patch add the stripes example, re-implemented in python (with the locale.setlocale call).

[oetiker]

This is not something python specific but the way locales are to be handled ... see 'man setlocale'

On startup of the main program, the portable "C" locale is selected as default. A program may be made portable to all locales by calling:

setlocale(LC_ALL, "");

so mentioning this explicitly for the python bindings seems a bit odd.

Like the example though ...

[nirgal]

I forgot the setlocale in the past and it took me forever to understand. But I agree this is not the best place to document that.
So I changed by branch to skip the python docstring change.
That branch now only has the python example. I think this is enough since have it would have put me in the right track then.

[oetiker]

thanks!