[gdal-dev] python bindings: strange behavior with layer

[Python Gis]

Hi
this is my code:

from osgeo import ogr

def OpenLayer(shape_path, shape_name):
    drv_shp = ogr.GetDriverByName('ESRI Shapefile')
    shp_ds = drv_shp.Open(shape_path, 1)
    layer = shp_ds.GetLayerByName(shape_name)
    print 'Name from method: %s' % layer.GetName()
    return layer;

layer = OpenLayer('output', 'myshapefile')
print 'Name from main: %s' % layer.GetName()

and this is the output:

$ python testogr.py 
Name from method: firenews
Segmentation fault

what can it be?
thanks a lot