Re: [gdal-dev] [gdal Python] Exceptions not reset correctly if gdal.UseExceptions() is used

2009-06-18 Thread Even Rouault
Luca,

(This behaviour is identical in trunk too)

we could probably reset the error state after issuing the exception, but that 
would prevent code from getting the error message if they call 
gdal.GetLastErrorMsg() afterwards. But I don't think this would be a problem.
We should probably also call ErrorReset() in gdal.UseExceptions() so that 
previous errors don't cause unexpected exceptions to be thrown.

Howard ?

Le Thursday 18 June 2009 10:09:27 Luca Fasano, vous avez écrit :
> Hi all,
> I suspect there is a bug in gdal.UseExceptions() in python binding.
> I noticed that if a RuntimeError has been generated, following gdal
> instructions *raise the same exception*.
> It seems that a gdal.ErrorReset() is necessary to reset it.
> An example with ipython:
>
> In [2]: from osgeo import gdal
>
> In [3]: gdal.UseExceptions()
>
> In [4]: dataset = gdal.Open('./filename.wrongformat')
> ---
> RuntimeError  Traceback (most recent call
> last)
>
> /home/fasano/Desktop/test/ in ()
>
> RuntimeError: `./filename.wrongformat' not recognised as a supported
> file format.
>
>
> In [5]: gdal.GetCacheMax()
> ---
> RuntimeError  Traceback (most recent call
> last)
>
> /home/fasano/Desktop/test/ in ()
>
> RuntimeError: `./filename.wrongformat' not recognised as a supported
> file format.
>
>
> In [6]: gdal.ErrorReset()
>
> In [7]: gdal.GetCacheMax()
> Out[7]: 41943040
>
>
> (My gdal version is 1.5.4)
>
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[gdal-dev] [gdal Python] Exceptions not reset correctly if gdal.UseExceptions() is used

2009-06-18 Thread Luca Fasano
Hi all,
I suspect there is a bug in gdal.UseExceptions() in python binding. 
I noticed that if a RuntimeError has been generated, following gdal
instructions *raise the same exception*.
It seems that a gdal.ErrorReset() is necessary to reset it.
An example with ipython:

In [2]: from osgeo import gdal

In [3]: gdal.UseExceptions()

In [4]: dataset = gdal.Open('./filename.wrongformat')
---
RuntimeError  Traceback (most recent call
last)

/home/fasano/Desktop/test/ in ()

RuntimeError: `./filename.wrongformat' not recognised as a supported
file format.


In [5]: gdal.GetCacheMax()
---
RuntimeError  Traceback (most recent call
last)

/home/fasano/Desktop/test/ in ()

RuntimeError: `./filename.wrongformat' not recognised as a supported
file format.


In [6]: gdal.ErrorReset()

In [7]: gdal.GetCacheMax()
Out[7]: 41943040
 

(My gdal version is 1.5.4)

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