numpy is already installed with Anaconda but I get

2020-02-08 04:54发布

问题:

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:\Users\my_user_name\AppData\Local\Continuum\anaconda3\python.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:\Users\my_user_name\AppData\Local\Continuum\anaconda3\lib\site-packages\numpy\core__init__.py", line 16, in 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 import numpy as np File "C:\Users\my_user_name\AppData\Local\Continuum\anaconda3\lib\site-packages\numpy__init__.py", line 142, in from . import add_newdocs File "C:\Users\my_user_name\AppData\Local\Continuum\anaconda3\lib\site-packages\numpy\add_newdocs.py", line 13, in from numpy.lib import add_newdoc File "C:\Users\my_user_name\AppData\Local\Continuum\anaconda3\lib\site-packages\numpy\lib__init__.py", line 8, in from .type_check import * File "C:\Users\my_user_name\AppData\Local\Continuum\anaconda3\lib\site-packages\numpy\lib\type_check.py", line 11, in import numpy.core.numeric as _nx File "C:\Users\my_user_name\AppData\Local\Continuum\anaconda3\lib\site-packages\numpy\core__init__.py", line 26, in 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!

回答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>\AppData\Local\Continuum\Anaconda3\Scripts\
C:\Users\<myusername>\AppData\Local\Continuum\Anaconda3\Library\
C:\Users\<myusername>\AppData\Local\Continuum\Anaconda3\Library\bin\
C:\Users\<myusername>\AppData\Local\Continuum\Anaconda3\Library\mingw-w64\bin\

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