Cannot import with latest pymc3 & theano

Describe the bug import starry throws a Theano error

To Reproduce import starry

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-53b69aeac1cd> in <module>
      1 import matplotlib.pyplot as plt
      2 import numpy as np
----> 3 import starry
      4 
      5 np.random.seed(12)

~/opt/anaconda3/lib/python3.8/site-packages/starry/__init__.py in <module>
     17 # Import the main interface
     18 from ._config import config
---> 19 from . import kepler, linalg, maps
     20 from .maps import Map
     21 from .kepler import Primary, Secondary, System

~/opt/anaconda3/lib/python3.8/site-packages/starry/kepler.py in <module>
      2 from . import config
      3 from ._constants import *
----> 4 from .maps import MapBase, RVBase, ReflectedBase
      5 from ._core import OpsSystem, math, linalg
      6 import numpy as np

~/opt/anaconda3/lib/python3.8/site-packages/starry/maps.py in <module>
      2 from . import config
      3 from ._constants import *
----> 4 from ._core import OpsYlm, OpsLD, OpsReflected, OpsRV, linalg, math
      5 from ._indices import integers, get_ylm_inds, get_ul_inds, get_ylmw_inds
      6 from ._plotting import (

~/opt/anaconda3/lib/python3.8/site-packages/starry/_core/__init__.py in <module>
      1 # -*- coding: utf-8 -*-
----> 2 from . import core, ops, utils
      3 
      4 from .core import *
      5 from .math import math, linalg

~/opt/anaconda3/lib/python3.8/site-packages/starry/_core/core.py in <module>
     31     # starry requires exoplanet >= v0.2.0
     32     from packaging import version
---> 33     import exoplanet
     34 
     35     if version.parse(exoplanet.__version__) < version.parse("0.2.0"):

~/opt/anaconda3/lib/python3.8/site-packages/exoplanet/__init__.py in <module>
     11 ]
     12 
---> 13 from . import distributions, interp, orbits
     14 from .citations import CITATIONS
     15 from .distributions import *  # NOQA

~/opt/anaconda3/lib/python3.8/site-packages/exoplanet/distributions/__init__.py in <module>
     14 ]
     15 
---> 16 from . import eccentricity
     17 from .base import Angle, Periodic, UnitDisk, UnitUniform, UnitVector
     18 from .deprecated import RadiusImpact, get_joint_radius_impact  # NOQA

~/opt/anaconda3/lib/python3.8/site-packages/exoplanet/distributions/eccentricity.py in <module>
      4 
      5 import numpy as np
----> 6 import pymc3 as pm
      7 import theano.tensor as tt
      8 

~/opt/anaconda3/lib/python3.8/site-packages/pymc3/__init__.py in <module>
     39 __set_compiler_flags()
     40 
---> 41 from . import gp, ode, sampling
     42 from .backends import load_trace, save_trace
     43 from .backends.tracetab import *

~/opt/anaconda3/lib/python3.8/site-packages/pymc3/gp/__init__.py in <module>
     14 
     15 from . import cov, mean, util
---> 16 from .gp import TP, Latent, LatentKron, Marginal, MarginalKron, MarginalSparse

~/opt/anaconda3/lib/python3.8/site-packages/pymc3/gp/gp.py in <module>
     23 import pymc3 as pm
     24 
---> 25 from pymc3.distributions import draw_values
     26 from pymc3.gp.cov import Constant, Covariance
     27 from pymc3.gp.mean import Zero

~/opt/anaconda3/lib/python3.8/site-packages/pymc3/distributions/__init__.py in <module>
     13 #   limitations under the License.
     14 
---> 15 from . import shape_utils, timeseries, transforms
     16 from .bart import BART
     17 from .bound import Bound

~/opt/anaconda3/lib/python3.8/site-packages/pymc3/distributions/timeseries.py in <module>
     21 from theano import scan
     22 
---> 23 from . import distribution, multivariate
     24 from .continuous import Flat, Normal, get_tau_sigma
     25 from .shape_utils import to_tuple

~/opt/anaconda3/lib/python3.8/site-packages/pymc3/distributions/multivariate.py in <module>
     25 from scipy import linalg, stats
     26 from theano.gof.op import get_test_value
---> 27 from theano.gof.utils import TestValueError
     28 from theano.tensor.nlinalg import det, eigh, matrix_inverse, trace
     29 from theano.tensor.slinalg import Cholesky

ImportError: cannot import name 'TestValueError' from 'theano.gof.utils' (/Users/james/opt/anaconda3/lib/python3.8/site-packages/theano/gof/utils.py)

Your setup (please complete the following information):

• Version of starry: 1.0.0 installed via pip.
• Operating system: macOS 11.1
• Python version & installation method (pip, conda, etc.): Python 3.8.5 via anaconda.

exoplanet also installed via pip and has same error

[dfm]

This is the same problem: @lgrcia, you must have Theano-pymc installed. Starry is not compatible with (several!) of the most recent versions of PyMC3 or the Theano-pymc project. You’ll need to run

pip uninstall theano-pymc  # run a few times until it says not installed
pip install "pymc3<3.10" "theano==1.0.5"

[edterrell]

I know this is closed, but after struggling to get pymc3 worining on an imac, I stumbled across the following which worked for me on stackoverflow: https://stackoverflow.com/questions/65543096/i-cannot-import-pymc3

conda remove theano pip uninstall Theano Theano-PyMC PyMC3 pip install PyMC3