FileNotFoundError: Could not find module when using jupyter notebook

Question

When I try to use jupyter notebook, I got the following error message:

---------------------------------------------------------------------------
FileNotFoundError                         Traceback (most recent call last)
<ipython-input-2-8ec26a89e3fd> in <module>
      4 import matplotlib
      5 import matplotlib.pyplot as plt
----> 6 from scipy.io import loadmat
      7 import time
      8 import sys

D:\Anaconda3\lib\site-packages\scipy\__init__.py in <module>
    128 
    129     # Allow distributors to run custom init code
--> 130     from . import _distributor_init
    131 
    132     from scipy._lib import _pep440

D:\Anaconda3\lib\site-packages\scipy\_distributor_init.py in <module>
     57             os.chdir(libs_path)
     58             for filename in glob.glob(os.path.join(libs_path, '*dll')):
---> 59                 WinDLL(os.path.abspath(filename))
     60         finally:
     61             os.chdir(owd)

D:\Anaconda3\lib\ctypes\__init__.py in __init__(self, name, mode, handle, use_errno, use_last_error, winmode)
    371 
    372         if handle is None:
--> 373             self._handle = _dlopen(self._name, mode)
    374         else:
    375             self._handle = handle

FileNotFoundError: Could not find module 'D:\Anaconda3\lib\site-packages\scipy\.libs\libbanded5x.EHDKC2XVYTQQ5MALRS6XN2CUSS6SRL6P.gfortran-win_amd64.dll' (or one of its dependencies). Try using the full path with constructor syntax.

But I am sure that the file is right there in the folder. Can anyone help me?

Answer 1

Same problem occured when trying to import sklearn. The version of my scipy is 1.6.3 and i solved the problem by degrading scipy into 1.6.2

Answer 2

Reverting scipy (from 1.7.3 back to 1.6.3) or changing scipy version to any other one didn't work for me. What did work, however, is setting up an environmental variable CONDA_DLL_SEARCH_MODIFICATION_ENABLE to 1 (as suggested here). This can be a workaround until the devs fix this.

Answer 3

It seems to be pretty common when installing scipy. You could try the downgrade, but that did not work for me.

I found that re-installing scipy using:

pip install scipy==1.6.3 --user 

worked to install the missing file.

Answer 4

Same problem while trying to import tensorflow!

FileNotFoundError: Could not find module 'C:\anaconda3\envs\test\lib\site-packages\scipy.libs\libbanded5x.EHDKC2XVYTQQ5MALRS6XN2CUSS6SRL6P.gfortran-win_amd64.dll' (or one of its dependencies). Try using the full path with constructor syntax.

(the file is there)