[gdal-dev] Error handlers in Python bindings

[Even Rouault]

Selon lpinner <Luke.Pinner at environment.gov.au>:

> The python function needs to accept three arguments, error class, error code
> and error message.
>
> i.e.
> from osgeo import gdal
> def f(err_class, err_code, msg):
>     print err_class, err_code, msg
>
> gdal.PushErrorHandler(f)

Reviewing the Python bindings code, I see no evidence that Python error handlers
are possible. An option is to use gdal.UseExceptions() which will cause a Python
exception to be thrown after a GDAL call has emitted an error.

>
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