Python 错误：没有名为 cv2 的模块
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Error: No module named cv2
提问by skm
I have already found few questionsat SO but i am unable to solve this problem using the answers there.
我已经在 SO 上发现了几个问题，但我无法使用那里的答案解决这个问题。
I am new to python. I am having python in Ubuntu 12.04. In my /usr/local/lib, there are two python folders python 2.7and python 3.2. python 2.7contains dist-packages and site-packages while python 3.2contains only dist-packages.
我是python的新手。我在 Ubuntu 12.04 中有 python。在 my 中/usr/local/lib，有两个 python 文件夹python 2.7和python 3.2. python 2.7包含 dist-packages 和 site-packages 而python 3.2只包含 dist-packages。
I am trying to run a very simple opencv example with the following code:
我正在尝试使用以下代码运行一个非常简单的 opencv 示例：
import cv2
import numpy as np
from matplotlib import pyplot as plt
img = cv2.imread('image.JPG')
kernel = np.ones((5,5),np.float32)/25
dst = cv2.filter2D(img,-1,kernel)
plt.subplot(121),plt.imshow(img),plt.title('Original')
plt.xticks([]), plt.yticks([])
plt.subplot(122),plt.imshow(dst),plt.title('Averaging')
plt.xticks([]), plt.yticks([])
plt.show()
Error:No module named cv2
错误：没有名为 cv2 的模块
采纳答案by Abid Rahman K
NB : This answer is a short compilation of comments above. For more details, please refer to the comments below question.
注意：这个答案是上面评论的简短汇编。有关更多详细信息，请参阅问题下方的评论。
Background: OP is using SPE Stani's python editor. OP has installed OpenCV /opt/ros/hydro/lib/python2.7/dist-packageswhich is not detected by the above mentioned editor. Adding this path to PYTHONPATH doesn't solve the issue.
背景：OP 正在使用SPE Stani's python editor. OP 已安装 OpenCV /opt/ros/hydro/lib/python2.7/dist-packages，但上述编辑器未检测到该OpenCV 。将此路径添加到 PYTHONPATH 并不能解决问题。
Solution (any one of the below):
解决方案（以下任一项）：
- Add this path to
sys.pathand put it in every file.
- 将此路径添加到
sys.path并将其放入每个文件中。
import sys
sys.path.append('/opt/ros/hydro/lib/python2.7/dist-packages')
import sys
sys.path.append('/opt/ros/hydro/lib/python2.7/dist-packages')
- Copy
cv2.sofile to any directory in thesys.path.
- 将
cv2.so文件复制到sys.path.
回答by v4vjk
I am able to resolve this problem of not loading cv2 dll by following below steps on my Win 64 machine.
通过在我的 Win 64 机器上执行以下步骤，我能够解决不加载 cv2 dll 的问题。
- Download the Unofficial Windows Binaries for Python Extension Packages from gohlkesite.
- In my case it is opencv_python-3.2.0-cp35-cp35m-win_amd64.whl downloaded it to some folder e.g. c:\py\lib
- Install this .whl using below command
pip install c:\py\lib\opencv_python-3.2.0-cp35-cp35m-win_amd64.whl
- Restart the kernel and error gone.
- 从gohlke站点下载 Python 扩展包的非官方 Windows 二进制文件。
- 就我而言，它是 opencv_python-3.2.0-cp35-cp35m-win_amd64.whl 将其下载到某个文件夹，例如 c:\py\lib
- 使用以下命令安装此 .whl
pip 安装 c:\py\lib\opencv_python-3.2.0-cp35-cp35m-win_amd64.whl
- 重新启动内核，错误消失。
