Python-3.6: Scipy-0.19: AttributeError: 'Delaunay' object has no attribute '_points'

Question

Ran into this error once updating to scipy 0.19 when trying to call interpnd():

def __init__(self,m_ini,age,feh,m_act,logL,Teff,logg,mags,tri=None,
             minage=None, maxage=None, ext_table=False):

    self.minage = age.min()
    self.maxage = age.max()
    self.minmass = m_act.min()
    self.maxmass = m_act.max()
    self.minfeh = feh.min()
    self.maxfeh = feh.max()

    self.ext_table = ext_table

    if minage is not None:
        self.minage = minage
    if maxage is not None:
        self.maxage = maxage

    L = 10**logL

    if tri is None:
        points = np.zeros((len(m_ini),3))
        points[:,0] = m_ini
        points[:,1] = age
        points[:,2] = feh
        fn = interpnd(points,m_act)
        self.tri = fn.tri
    else:
        self.tri = tri
        self.mass = interpnd(self.tri,m_act)

    self._data = {'mass':m_act,
                'logL':logL,
                'logg':logg,
                'logTeff':np.log10(Teff),
                'mags':mags}
    self._props = ['mass', 'logL', 'logg', 'logTeff']

    self.bands = mags.keys()

    self._mag = {band:interpnd(self.tri,mags[band]) for band in self.bands}

    d = {}
    for b in self._mag.keys():
        d[b] = self._mag_fn(b)

    self.mag = d

Error message:

Traceback (most recent call last):
  File "/Users//anaconda/lib/python3.6/site-packages/nose/failure.py", line 39, in runTest
    raise self.exc_val.with_traceback(self.tb)
  File "/Users//anaconda/lib/python3.6/site-packages/nose/loader.py", line 417, in loadTestsFromName
addr.filename, addr.module)
  File "/Users//anaconda/lib/python3.6/site-packages/nose/importer.py", line 47, in importFromPath
    return self.importFromDir(dir_path, fqname)
  File "/Users//anaconda/lib/python3.6/site-packages/nose/importer.py", line 94, in importFromDir
    mod = load_module(part_fqname, fh, filename, desc)
  File "/Users//anaconda/lib/python3.6/imp.py", line 234, in load_module
    return load_source(name, filename, file)
  File "/Users//anaconda/lib/python3.6/imp.py", line 172, in load_source
    module = _load(spec)
  File "<frozen importlib._bootstrap>", line 675, in _load
  File "<frozen importlib._bootstrap>", line 655, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 205, in _call_with_frames_removed
  File "/Users//isochrones/isochrones/tests/tests.py", line 11, in <module>
    DAR = Dartmouth_Isochrone()
  File "/Users//isochrones/isochrones/dartmouth/isochrone.py", line 89, in __init__
**kwargs)
  File "/Users//isochrones/isochrones/isochrone.py", line 145, in __init__
    self.mass = interpnd(self.tri,m_act)
  File "scipy/interpolate/interpnd.pyx", line 243, in scipy.interpolate.interpnd.LinearNDInterpolator.__init__ (scipy/interpolate/interpnd.c:5484)
  File "scipy/interpolate/interpnd.pyx", line 71, in scipy.interpolate.interpnd.NDInterpolatorBase.__init__ (scipy/interpolate/interpnd.c:2621)
  File "scipy/spatial/qhull.pyx", line 1910, in scipy.spatial.qhull.Delaunay.points (scipy/spatial/qhull.c:18892)
AttributeError: 'Delaunay' object has no attribute '_points'`

Raised an issue on Github but to no response. This issue was not occurring before I updated, but now even when I downgrade to scipy 18.1 the issue still occurs. I also tried uninstalling scipy and reinstalling it and this did not work either.

It is impossible to reproduce with the code you have given. Can you edit the post to produce a copy-pastable working example? — Pierre de Buyl
The code I posted is from a package called isochrones and was just the example I chose to use because I've never actually called interpnd before. The error posted is from using nosetests isochrones in the terminal, which easily shows the error output. I can either post a simpler code of me calling the isochrones package, or I can post a simple call of interpnd/qhull — Austin
I've found that there was a compatibility issue between the isochrones package and the new scipy package. The issue was resolved by the package creator. — Austin

Austin Austin · Accepted Answer · 2017-05-31T22:21:16

I've found that there was a compatibility issue between the isochrones package and the new scipy package. The issue was resolved by the package creator.

Python-3.6: Scipy-0.19: AttributeError: 'Delaunay' object has no attribute '_points'

1 Answers