def get_xfm(self, subject, xfmname):
        try:
            group = self.h5['subjects'][subject]['transforms'][xfmname]
            return Transform(group['xfm'].value, tuple(group['xfm'].attrs['shape']))
        except (KeyError, __HOLE__):
            raise IOError('Transform not found in package')
dataset/ETHPy150Open gallantlab/pycortex/cortex/dataset/__init__.py/Dataset.get_xfm