getattr with non existent attribute returns RuntimeError

[dopplershift]

From david.huard on September 17, 2008 10:18:17

Given a netCDF4 variable var, the following raises a RuntimeError

getattr(var, 'sillyattribute', None)

I would rather expect this to return None.

My guess is that getattr expects var.getattr to return an
AttributeError if the attribute is not found. Since it gets a RuntimeError,
the default value is not returned.

Original issue: http://code.google.com/p/netcdf4-python/issues/detail?id=7

[dopplershift]

From whitaker.jeffrey@gmail.com on September 17, 2008 09:36:59

Your diagnosis was correct. Fixed now in svn revision 571 .

[dopplershift]

From david.huard on October 07, 2008 07:39:47

There is a similar problem with MFDataset::

def __getattr__(self,name):
    if name == 'shape': return self._shape()
    if name == 'ndim': return len(self._shape())
    return self.__dict__[name]

If name is not in dict, it raises a KeyError, instead of the AttributeError that
is needed for the default in getattr to kick in. I've written a small fix, but I have
no clue how to compile the pyx file correctly.

[dopplershift]

From whitaker.jeffrey@gmail.com on October 14, 2008 15:47:53

David: This should be fixed now ( r576 ).

-Jeff

[dopplershift]

From david.huard on February 03, 2009 07:06:07

Closing fixed ticket.

Status: Fixed