ImportError: cannot import name 'gaussian' from 'scipy.signal'

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Hi,
I’m trying to import arviz, pymc and pymc_bart packages but I got an error message showing below:

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
Cell In[9], line 6
      3 import statsmodels.api as sm 
      4 from sklearn.metrics import mean_squared_error
----> 6 import arviz as az
      7 import matplotlib.pyplot as plt
      8 import numpy as np

File /opt/conda/lib/python3.9/site-packages/arviz/__init__.py:34
     30 _log = Logger("arviz")
     33 from .data import *
---> 34 from .plots import *
     35 from .plots.backends import *
     36 from .stats import *

File /opt/conda/lib/python3.9/site-packages/arviz/plots/__init__.py:2
      1 """Plotting functions."""
----> 2 from .autocorrplot import plot_autocorr
      3 from .bpvplot import plot_bpv
      4 from .bfplot import plot_bf

File /opt/conda/lib/python3.9/site-packages/arviz/plots/autocorrplot.py:7
      5 from ..rcparams import rcParams
      6 from ..utils import _var_names
----> 7 from .plot_utils import default_grid, filter_plotters_list, get_plotting_function
     10 def plot_autocorr(
     11     data,
     12     var_names=None,
   (...)
     24     show=None,
     25 ):
     26     r"""Bar plot of the autocorrelation function (ACF) for a sequence of data.
     27 
     28     The ACF plots are helpful as a convergence diagnostic for posteriors from MCMC
   (...)
    117         >>> az.plot_autocorr(data, var_names=['mu', 'tau'], max_lag=200, combined=True)
    118     """

File /opt/conda/lib/python3.9/site-packages/arviz/plots/plot_utils.py:15
     11 from scipy.interpolate import CubicSpline
     14 from ..rcparams import rcParams
---> 15 from ..stats.density_utils import kde
     16 from ..stats import hdi
     18 KwargSpec = Dict[str, Any]

File /opt/conda/lib/python3.9/site-packages/arviz/stats/__init__.py:3
      1 # pylint: disable=wildcard-import
      2 """Statistical tests and diagnostics for ArviZ."""
----> 3 from .density_utils import *
      4 from .diagnostics import *
      5 from .stats import *

File /opt/conda/lib/python3.9/site-packages/arviz/stats/density_utils.py:8
      6 from scipy.fftpack import fft
      7 from scipy.optimize import brentq
----> 8 from scipy.signal import convolve, convolve2d, gaussian  # pylint: disable=no-name-in-module
      9 from scipy.sparse import coo_matrix
     10 from scipy.special import ive  # pylint: disable=no-name-in-module

ImportError: cannot import name 'gaussian' from 'scipy.signal' (/opt/conda/lib/python3.9/site-packages/scipy/signal/__init__.py)

I’ve tried to use from scipy.signal.window import gaussian but it still doesn’t work. So I cannot run the whole code because of this.

Does anyone know how to solve the problem? Currently I’m using Python version 3.9.18.

Thank you in advance.

1 Like
2

It’s a current issue with the latest scipy and arviz. There should be a release soon on the arviz side that will fix it. In the meantime you can downgrade scipy < 1.13

1 Like
3
4

Thank you. It works now with scipy==1.10.0

5

It also works with scipy 1.12.0

1 Like
6

this is very helpful, I had the same issue and now it is fixed. Thank you

7

ArviZ 0.18.0 is already on pypi, so this should no longer happen if using latest ArviZ, it will be on conda forge shortly.

1 Like
8

Thanks. I had an old conda environment with this error. Updating arviz actually generated a new error: ImportError: cannot import name ‘BehaviourChangeWarning’ from ‘arviz.utils’

I simply deleted conda environment and reinstalled clean. Works fine now.