<p dir="auto">I am getting the 'Importing the multiarray numpy extension module failed' error message when I create a new python environment and install the python package SatPy. I have uninstalled and reinstalled numpy multiple times and created new environements as well as clone working environments. I am not sure if this issue is caused by SatPy or numpy but when I install SatPy everything breaks.</p>
<p dir="auto">The full error message I am getting is:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="ImportError                               Traceback (most recent call last)
~\AppData\Local\conda\conda\envs\sats\lib\site-packages\numpy\core\__init__.py in &lt;module&gt;
     39 try:
---&gt; 40     from . import multiarray
     41 except ImportError as exc:

~\AppData\Local\conda\conda\envs\sats\lib\site-packages\numpy\core\multiarray.py in &lt;module&gt;
     11 
---&gt; 12 from . import overrides
     13 from . import _multiarray_umath

~\AppData\Local\conda\conda\envs\sats\lib\site-packages\numpy\core\overrides.py in &lt;module&gt;
      5 
----&gt; 6 from numpy.core._multiarray_umath import (
      7     add_docstring, implement_array_function, _get_implementing_args)

ImportError: DLL load failed: The specified module could not be found.

During handling of the above exception, another exception occurred:

ImportError                               Traceback (most recent call last)
&lt;ipython-input-1-9619fcfabd12&gt; in &lt;module&gt;
----&gt; 1 from satpy import Scene
      2 import cartopy.crs as ccrs
      3 import cartopy.feature as cfeature
      4 from metpy.plots import USCOUNTIES
      5 from glob import glob

~\AppData\Local\conda\conda\envs\sats\lib\site-packages\satpy\__init__.py in &lt;module&gt;
     53 CALIBRATION_ORDER = {cal: idx for idx, cal in enumerate(CALIBRATION_ORDER)}
     54 
---&gt; 55 from satpy.utils import get_logger  # noqa
     56 from satpy.dataset import DatasetID, DATASET_KEYS  # noqa
     57 from satpy.readers import (DatasetDict, find_files_and_readers,  # noqa

~\AppData\Local\conda\conda\envs\sats\lib\site-packages\satpy\utils.py in &lt;module&gt;
     32 import re
     33 
---&gt; 34 import numpy as np
     35 import xarray.ufuncs as xu
     36 

~\AppData\Local\conda\conda\envs\sats\lib\site-packages\numpy\__init__.py in &lt;module&gt;
    140     from . import _distributor_init
    141 
--&gt; 142     from . import core
    143     from .core import *
    144     from . import compat

~\AppData\Local\conda\conda\envs\sats\lib\site-packages\numpy\core\__init__.py in &lt;module&gt;
     69 Original error was: %s
     70 &quot;&quot;&quot; % (sys.executable, exc)
---&gt; 71     raise ImportError(msg)
     72 finally:
     73     for envkey in env_added:

ImportError: 

IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!

Importing the multiarray numpy extension module failed.  Most
likely you are trying to import a failed build of numpy.
Here is how to proceed:
- If you're working with a numpy git repository, try `git clean -xdf`
  (removes all files not under version control) and rebuild numpy.
- If you are simply trying to use the numpy version that you have installed:
  your installation is broken - please reinstall numpy.
- If you have already reinstalled and that did not fix the problem, then:
  1. Check that you are using the Python you expect (you're using C:\Users\Matthew\AppData\Local\conda\conda\envs\sats\python.exe),
     and that you have no directories in your PATH or PYTHONPATH that can
     interfere with the Python and numpy versions you're trying to use.
  2. If (1) looks fine, you can open a new issue at
     https://github.com/numpy/numpy/issues.  Please include details on:
     - how you installed Python
     - how you installed numpy
     - your operating system
     - whether or not you have multiple versions of Python installed
     - if you built from source, your compiler versions and ideally a build log

     Note: this error has many possible causes, so please don't comment on
     an existing issue about this - open a new one instead.

Original error was: DLL load failed: The specified module could not be found."><pre class="notranslate"><code class="notranslate">ImportError                               Traceback (most recent call last)
~\AppData\Local\conda\conda\envs\sats\lib\site-packages\numpy\core\__init__.py in &lt;module&gt;
     39 try:
---&gt; 40     from . import multiarray
     41 except ImportError as exc:

~\AppData\Local\conda\conda\envs\sats\lib\site-packages\numpy\core\multiarray.py in &lt;module&gt;
     11 
---&gt; 12 from . import overrides
     13 from . import _multiarray_umath

~\AppData\Local\conda\conda\envs\sats\lib\site-packages\numpy\core\overrides.py in &lt;module&gt;
      5 
----&gt; 6 from numpy.core._multiarray_umath import (
      7     add_docstring, implement_array_function, _get_implementing_args)

ImportError: DLL load failed: The specified module could not be found.

During handling of the above exception, another exception occurred:

ImportError                               Traceback (most recent call last)
&lt;ipython-input-1-9619fcfabd12&gt; in &lt;module&gt;
----&gt; 1 from satpy import Scene
      2 import cartopy.crs as ccrs
      3 import cartopy.feature as cfeature
      4 from metpy.plots import USCOUNTIES
      5 from glob import glob

~\AppData\Local\conda\conda\envs\sats\lib\site-packages\satpy\__init__.py in &lt;module&gt;
     53 CALIBRATION_ORDER = {cal: idx for idx, cal in enumerate(CALIBRATION_ORDER)}
     54 
---&gt; 55 from satpy.utils import get_logger  # noqa
     56 from satpy.dataset import DatasetID, DATASET_KEYS  # noqa
     57 from satpy.readers import (DatasetDict, find_files_and_readers,  # noqa

~\AppData\Local\conda\conda\envs\sats\lib\site-packages\satpy\utils.py in &lt;module&gt;
     32 import re
     33 
---&gt; 34 import numpy as np
     35 import xarray.ufuncs as xu
     36 

~\AppData\Local\conda\conda\envs\sats\lib\site-packages\numpy\__init__.py in &lt;module&gt;
    140     from . import _distributor_init
    141 
--&gt; 142     from . import core
    143     from .core import *
    144     from . import compat

~\AppData\Local\conda\conda\envs\sats\lib\site-packages\numpy\core\__init__.py in &lt;module&gt;
     69 Original error was: %s
     70 """ % (sys.executable, exc)
---&gt; 71     raise ImportError(msg)
     72 finally:
     73     for envkey in env_added:

ImportError: 

IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!

Importing the multiarray numpy extension module failed.  Most
likely you are trying to import a failed build of numpy.
Here is how to proceed:
- If you're working with a numpy git repository, try `git clean -xdf`
  (removes all files not under version control) and rebuild numpy.
- If you are simply trying to use the numpy version that you have installed:
  your installation is broken - please reinstall numpy.
- If you have already reinstalled and that did not fix the problem, then:
  1. Check that you are using the Python you expect (you're using C:\Users\Matthew\AppData\Local\conda\conda\envs\sats\python.exe),
     and that you have no directories in your PATH or PYTHONPATH that can
     interfere with the Python and numpy versions you're trying to use.
  2. If (1) looks fine, you can open a new issue at
     https://github.com/numpy/numpy/issues.  Please include details on:
     - how you installed Python
     - how you installed numpy
     - your operating system
     - whether or not you have multiple versions of Python installed
     - if you built from source, your compiler versions and ideally a build log

     Note: this error has many possible causes, so please don't comment on
     an existing issue about this - open a new one instead.

Original error was: DLL load failed: The specified module could not be found.
</code></pre></div>
<p dir="auto">I am using conda to install packages.<br>
My numpy version is: 1.16.2<br>
python: 3.7.3<br>
satpy: 0.13.0</p>
<p dir="auto">Below is other information regarding path and setup<br>
<a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/29383396/55365190-6a7f4a80-5498-11e9-8b54-3086122c0b83.PNG"><img src="https://user-images.githubusercontent.com/29383396/55365190-6a7f4a80-5498-11e9-8b54-3086122c0b83.PNG" alt="pathes" style="max-width: 100%;"></a></p>
<p dir="auto">I was trying to import the skyfield library</p>
<h3 dir="auto">Reproducing code example:</h3>

<div class="highlight highlight-source-python notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="from skyfield.api import Topos"><pre class="notranslate"><span class="pl-k">from</span> <span class="pl-s1">skyfield</span>.<span class="pl-s1">api</span> <span class="pl-k">import</span> <span class="pl-v">Topos</span></pre></div>

<h3 dir="auto">Error message:</h3>

<p dir="auto">Traceback (most recent call last):<br>
File "/usr/local/lib/python3.7/dist-packages/numpy/core/<strong>init</strong>.py", line 17, in <br>
from . import multiarray<br>
File "/usr/local/lib/python3.7/dist-packages/numpy/core/multiarray.py", line 14, in <br>
from . import overrides<br>
File "/usr/local/lib/python3.7/dist-packages/numpy/core/overrides.py", line 7, in <br>
from numpy.core._multiarray_umath import (<br>
ImportError: libf77blas.so.3: cannot open shared object file: No such file or directory</p>
<p dir="auto">During handling of the above exception, another exception occurred:</p>
<p dir="auto">Traceback (most recent call last):<br>
File "", line 1, in <br>
File "/usr/local/lib/python3.7/dist-packages/skyfield/api.py", line 13, in <br>
from .iokit import Loader, load_file<br>
File "/usr/local/lib/python3.7/dist-packages/skyfield/iokit.py", line 6, in <br>
import numpy as np<br>
File "/usr/local/lib/python3.7/dist-packages/numpy/<strong>init</strong>.py", line 142, in <br>
from . import core<br>
File "/usr/local/lib/python3.7/dist-packages/numpy/core/<strong>init</strong>.py", line 47, in <br>
raise ImportError(msg)<br>
ImportError:</p>
<p dir="auto">IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!</p>
<p dir="auto">Importing the numpy c-extensions failed.</p>
<ul dir="auto">
<li>
<p dir="auto">Try uninstalling and reinstalling numpy.</p>
</li>
<li>
<p dir="auto">If you have already done that, then:</p>
<ol dir="auto">
<li>Check that you expected to use Python3.7 from "/usr/bin/python3",<br>
and that you have no directories in your PATH or PYTHONPATH that can<br>
interfere with the Python and numpy version "1.17.0" you're trying to use.</li>
<li>If (1) looks fine, you can open a new issue at<br>
<a href="https://github.com/numpy/numpy/issues">https://github.com/numpy/numpy/issues</a>.  Please include details on:
<ul dir="auto">
<li>how you installed Python</li>
<li>how you installed numpy</li>
<li>your operating system</li>
<li>whether or not you have multiple versions of Python installed</li>
<li>if you built from source, your compiler versions and ideally a build log</li>
</ul>
</li>
</ol>
</li>
<li>
<p dir="auto">If you're working with a numpy git repository, try <code class="notranslate">git clean -xdf</code><br>
(removes all files not under version control) and rebuild numpy.</p>
</li>
</ul>
<p dir="auto">Note: this error has many possible causes, so please don't comment on<br>
an existing issue about this - open a new one instead.</p>
<p dir="auto">Original error was: libf77blas.so.3: cannot open shared object file: No such file or directory</p>

<h3 dir="auto">Numpy/Python version information:</h3>
<p dir="auto">Python 3.7.3 (default, Apr  3 2019, 05:39:12)<br>
Successfully installed numpy-1.17.0<br>
import numpy fails with same error</p>