Python opencv Aruco “No module named 'cv2.aruco'”

I am running an Ubuntu virtual machine with, Python 3.6.1, Anaconda 4.4.0 (64-bit). I am trying to run the code on this website. When I try to use

import cv2.aruco

I get:

>>> import cv2.aruco
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'cv2.aruco'

Is this something I need to install or setup?

If cv2.aruco is not found, try installing opencv-contrib-python, such as by running the following (for the default Python installation):

pip install opencv-contrib-python

Or for a specific Python installation (in this case Python 3)

python3 -m pip install opencv-contrib-python

Then try re-running the script trying to access cv2.aruco.

If cv2.aruco is not found, first make sure that opencv-python is not installed.

for that you can use:

pip uninstall opencv-python

Then install:

pip install opencv-contrib-python

We are uninstalling opencv-python because installing two packages of opencv will contradict each other and will not let the other one install.

In my case both opencv-python and opencv-contrib-python were installed when I was getting the above error.

So I uninstalled opencv-python using

pip uninstall opencv-python

Run the program and same error. Then I uninstalled opencv-contrib-python

pip uninstall opencv-contrib-python

After that I reinstalled opencv-contrib-python using

pip install opencv-contrib-python

And run the program, no error now. So I upvoted both the above answers :)

来源：https://stackoverflow.com/questions/45972357/python-opencv-aruco-no-module-named-cv2-aruco

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