python - numpy is already installed with Anaconda but I get an ImportError (DLL load failed: The specified module could not be found)

Question

I am using the Anaconda distribution with Python 3.7. Among the packages installed, I have numpy, pandas, etc. In PyCharm IDE, I have set the Project Interpreter to be the path to the python.exe installed with Anaconda: C:Usersmy_user_nameAppDataLocalContinuumanaconda3python.exe

However, when I try running a simple python script:

import numpy as np
print(np.pi)

I get an error:

ImportError: 
Importing the multiarray numpy extension module failed.  Most
likely you are trying to import a failed build of numpy.
If you're working with a numpy git repo, try `git clean -xdf` (removes all
files not under version control).  Otherwise reinstall numpy.

Original error was: DLL load failed: The specified module could not be found.

See the full error message below:

----------------------------------------------------------------------------------
Traceback (most recent call last):
  File "C:Usersmy_user_nameAppDataLocalContinuumanaconda3libsite-packages
umpycore\__init__.py", line 16, in <module>
    from . import multiarray
ImportError: DLL load failed: The specified module could not be found.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:/Users/my_user_name/Documents/TestMyApps/simpletest.py", line 1, in <module>
    import numpy as np
  File "C:Usersmy_user_nameAppDataLocalContinuumanaconda3libsite-packages
umpy\__init__.py", line 142, in <module>
    from . import add_newdocs
  File "C:Usersmy_user_nameAppDataLocalContinuumanaconda3libsite-packages
umpyadd_newdocs.py", line 13, in <module>
    from numpy.lib import add_newdoc
  File "C:Usersmy_user_nameAppDataLocalContinuumanaconda3libsite-packages
umpylib\__init__.py", line 8, in <module>
    from .type_check import *
  File "C:Usersmy_user_nameAppDataLocalContinuumanaconda3libsite-packages
umpylibype_check.py", line 11, in <module>
    import numpy.core.numeric as _nx
  File "C:Usersmy_user_nameAppDataLocalContinuumanaconda3libsite-packages
umpycore\__init__.py", line 26, in <module>
    raise ImportError(msg)
ImportError: 
Importing the multiarray numpy extension module failed.  Most
likely you are trying to import a failed build of numpy.
If you're working with a numpy git repo, try `git clean -xdf` (removes all
files not under version control).  Otherwise reinstall numpy.

Original error was: DLL load failed: The specified module could not be found.


Process finished with exit code 1

----------------------------------------------------------------------------------

I have tried uninstalling and reinstalling numpy using Anaconda Prompt with: conda uninstall numpy, and then: conda install numpy [I now have numpy 1.15.4]. The re-install seem 'successful' (at least according to Anaconda Prompt), but, I keep getting an error in PyCharm.

The strange part, is when I directly go into Anaconda Prompt, and type:

python
import numpy as np
print(np.pi)

I do not get any error, and I am able to see the correct result printed out. At first, I thought that perhaps, when using PyCharm, I am somehow pointing to a different executable, but I checked in both Anaconda Prompt and Python Console of Pycharm, using:

sys.executable

and they both show the same path:

'C:\Users\my_user_name\AppData\Local\Continuum\anaconda3\python.exe'

Note that in PyCharm, when I try running a script where I am not importing any library, or when the library imported are just like sys or os, the scripts run fine. However, when I try running any other script that involves importing a library that somehow depends on numpy, it fails as well (i.e. scripts where I import pandas, etc.) Those same scripts work fine in Anaconda Prompt.

I am at a loss here, any help would be very appreciated!

Answer 1

I have actually figured out the solution. I had initially edited my System Environment Variable ‘PATH’ by adding the path to the Scripts folder in my Python executable directory. Turns out, this was NOT enough...

I had to add more paths to it, and that magically did the trick.

See below the paths I added for the System Environment Variable PATH:

C:Users<myusername>AppDataLocalContinuumAnaconda3Scripts
C:Users<myusername>AppDataLocalContinuumAnaconda3Library
C:Users<myusername>AppDataLocalContinuumAnaconda3Libraryin
C:Users<myusername>AppDataLocalContinuumAnaconda3Librarymingw-w64in

Now, I am not sure exactly which one path among these 4 my System was really looking for in particular. However, adding this combination sure did work for me ??