orange-canvas cannot start due to numpy ImportError "DLL load failed"

[XiepengLi]

Orange version

orange3=3.4.5

Expected behavior

show the orange GUI

Actual behavior

Traceback (most recent call last):
File "E:\Anaconda2\envs\orange\lib\site-packages\numpy\core_init_.py", line 16, in
from . import multiarray
ImportError: DLL load failed: 找不到指定的模块。

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "E:\Anaconda2\envs\orange\Scripts\orange-canvas-script.py", line 3, in
import Orange.canvas.main
File "E:\Anaconda2\envs\orange\lib\site-packages\Orange_init_.py", line 11, in
from .misc.lazy_module import LazyModule
File "E:\Anaconda2\envs\orange\lib\site-packages\Orange\misc_init.py", line 3, in
from .distmatrix import DistMatrix
File "E:\Anaconda2\envs\orange\lib\site-packages\Orange\misc\distmatrix.py", line 1, in
import numpy as np
File "E:\Anaconda2\envs\orange\lib\site-packages\numpy_init_.py", line 142, in
from . import add_newdocs
File "E:\Anaconda2\envs\orange\lib\site-packages\numpy\add_newdocs.py", line 13, in
from numpy.lib import add_newdoc
File "E:\Anaconda2\envs\orange\lib\site-packages\numpy\lib_init_.py", line 8, in
from .type_check import *
File "E:\Anaconda2\envs\orange\lib\site-packages\numpy\lib\type_check.py", line 11, in
import numpy.core.numeric as nx
File "E:\Anaconda2\envs\orange\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: 找不到指定的模块。

Steps to reproduce the behavior

conda create -n orange python=3.5.4
conda install -n orange orange3=3.4.5
activate orange
orange-canvas

Additional info (worksheets, data, screenshots, ...)

[kernc]

Can you run in that env: python -m site.

[XiepengLi]

@kernc

python -m site
sys.path = [
    'C:\\Users\\xxx',
    'E:\\Anaconda2\\envs\\orange\\python35.zip',
    'E:\\Anaconda2\\envs\\orange\\DLLs',
    'E:\\Anaconda2\\envs\\orange\\lib',
    'E:\\Anaconda2\\envs\\orange',
    'E:\\Anaconda2\\envs\\orange\\lib\\site-packages',
    'E:\\Anaconda2\\envs\\orange\\lib\\site-packages\\win32',
    'E:\\Anaconda2\\envs\\orange\\lib\\site-packages\\win32\\lib',
    'E:\\Anaconda2\\envs\\orange\\lib\\site-packages\\Pythonwin',
    'E:\\Anaconda2\\envs\\orange\\lib\\site-packages\\setuptools-27.2.0-py3.5.egg',
]
USER_BASE: 'C:\\Users\\xxx\\AppData\\Roaming\\Python' (exists)
USER_SITE: 'C:\\Users\\xxx\\AppData\\Roaming\\Python\\Python35\\site-packages' (doesn't exist)
ENABLE_USER_SITE: True

[kernc]

Nevermind. Likely this bug: numpy/numpy#9272. Try:

conda install numpy
orange-canvas

Else try to update Python to 3.6.2 beforehand.

[XiepengLi]

@kernc

conda install -n orange numpy
Package plan for installation in environment E:\Anaconda2\envs\orange:

The following packages will be UPDATED:

    bottleneck:   1.2.1-np112py35_0  conda-forge --> 1.2.1-np113py35_0  conda-forge
    numpy:        1.12.1-py35_0                  --> 1.13.1-py35_0
    scikit-learn: 0.19.0-np112py35_0             --> 0.19.0-np113py35_0
    scipy:        0.19.1-np112py35_0             --> 0.19.1-np113py35_0

The following packages will be DOWNGRADED:

    orange3:      3.4.5-np112py35_0  conda-forge --> 3.4.1-py35_0

As 3.4.1 version doesn't have Orange3-text Add-on,
I just want to try Orange3-text Add-on, it tell me to upgrade to 3.4.5

[XiepengLi]

@kernc
it work well with Python 3.6.2 , thanks.

[astaric]

It looks like the problem was solved by updating to latest python (which probably uses the latest numpy) and the problem went away. As numpy is used all around the code, I do not think we can do anything else in such cases.