ERROR: Could not build wheels for opencv-python which use PEP 517 and cannot be installed directly

Question

我试图在 docker 上的 jetson nano 上安装 OpenCV4。它有 4.4 秒的喷气背包 os。 docker 已成功创建并且 Tensorflow 是运行但是在使用 pip 安装 OpenCV 时显示 CMake 错误。

root@5abf405fb92d:~# pip3 install opencv-python
Collecting opencv-python
  Downloading opencv-python-4.4.0.42.tar.gz (88.9 MB)
     |████████████████████████████████| 88.9 MB 2.5 kB/s 
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... done
Requirement already satisfied: numpy>=1.13.3 in /usr/local/lib/python3.6/dist-packages (from opencv-python) (1.18.4)
Building wheels for collected packages: opencv-python
  Building wheel for opencv-python (PEP 517) ... error
  ERROR: Command errored out with exit status 1:
   command: /usr/bin/python3 /usr/local/lib/python3.6/dist-packages/pip/_vendor/pep517/_in_process.py build_wheel /tmp/tmpqpzwrofy
       cwd: /tmp/pip-install-93nxibky/opencv-python
  Complete output (9 lines):
    File "/tmp/pip-build-env-o_hualnr/overlay/lib/python3.6/site-packages/skbuild/setuptools_wrap.py", line 560, in setup
      cmkr = cmaker.CMaker(cmake_executable)
    File "/tmp/pip-build-env-o_hualnr/overlay/lib/python3.6/site-packages/skbuild/cmaker.py", line 95, in __init__
      self.cmake_version = get_cmake_version(self.cmake_executable)
    File "/tmp/pip-build-env-o_hualnr/overlay/lib/python3.6/site-packages/skbuild/cmaker.py", line 82, in get_cmake_version
      "Problem with the CMake installation, aborting build. CMake executable is %s" % cmake_executable)
  Traceback (most recent call last):
  
  Problem with the CMake installation, aborting build. CMake executable is cmake
  ----------------------------------------
  ERROR: Failed building wheel for opencv-python
Failed to build opencv-python
ERROR: Could not build wheels for opencv-python which use PEP 517 and cannot be installed directly

Answer 1

我遇到了同样的问题，我这样做了，

pip install --upgrade pip setuptools wheel

然后再安装opencv,

pip install opencv-python

这对我有用

Answer 2

是的..终于找到了解决方法。按照此 https://github.com/mdegans/nano_build_opencv 并从源代码构建并最终安装。

PS: 构建可能需要一点时间，对我来说花了 10 个小时 :P.

快乐Image-Processing..

Answer 3

如果在

之后

pip install --upgrade pip setuptools wheel

你仍然有同样的错误，

您可以尝试指定老版本的OpenCV安装

例如

pip3 install opencv-python==3.4.13.47

Answer 4

我遇到了类似的问题，为我解决的不是使用 python:3-alpine，而是 python:3.8-slim。例如：

FROM python:3.8-slim
WORKDIR /usr/src/app

RUN apt update
RUN apt -y install build-essential libwrap0-dev libssl-dev libc-ares-dev uuid-dev xsltproc
RUN apt-get update -qq \
    && apt-get install --no-install-recommends --yes \
        build-essential \
        gcc \
        python3-dev \
        mosquitto \
        mosquitto-clients


RUN pip3 install --upgrade pip setuptools wheel

RUN python3 -m pip install --no-cache-dir \
      numpy scipy matplotlib scikit-build opencv-contrib-python-headless \
      influxdb paho-mqtt configparser Pillow \
      qrcode

终于对我有用了。

Answer 5

请检查您的 python 规格：


  - opencv -> python[
version='
>=2.7,<2.8.0a0
>=3.5,<3.6.0a0
>=3.6,<3.7.0a0
>=3.7,<3.8.0a0']

Answer 6

我通过在我的 MacBook 中从头开始重新安装 python3 来处理它：

brew reinstall python@3.9

我还实验性地重新安装了 numpy 和 matplotlib 包。

pip3 install numpy
pip3 install matplotlib 
pip3 install opencv-contrib-python

版本：

macOS 莫哈韦沙漠 10.14.5
Python3.9.7
OpenCV 4.5.3

OpenCV 的版本是 4.5.3 by this way:

import cv2 
print(cv2.__version__)

但是通过“pip list”，它显示“opencv-contrib-python 3.4.9.31”。

Answer 7

如果您尝试在 raspberrypi 3B 中安装 opencv，请使用以下步骤：

sudo raspi-config
高级 -- 扩展文件系统
重启你的 pi

打开您的 raspi 终端并执行以下操作：

使用命令：sudo apt-get update
使用命令：sudo apt-get升级
检查您的 python 版本并将其升级到最新版本
安装 pip 并升级 pip
使用命令：mkdir 项目
使用命令：cd project
创建虚拟环境
激活虚拟环境
安装依赖，可以从https://singleboardbytes.com/647/install-opencv-raspberry-pi-4.htm
如果安装 libdhf5-dev 时出错
使用命令：sudo apt-get 安装 python3-h5py 并重新安装 libdhf5-dev
使用命令：pip install scikit-build
使用命令：pip install cython
在安装opencv之前，确保你在虚拟环境中或者激活环境
使用命令：pip install --no-cache-dir opencv-contrib-python==4.5.3.56
记得使用提到的版本...

谢谢...

Answer 8

我遇到过类似情况
我有错误

Failed to build opencv-python ERROR: Could not build wheels for opencv-python which use PEP 517 and cannot be installed directly WARNING: You are using pip version 19.2.3, however version 22.0.4 is available. You should consider upgrading via the 'python -m pip install --upgrade pip' command.

我运行在具有管理员权限的命令提示符下
python -m pip 安装 --upgrade pip
现在“pip install opencv-python”有效

ERROR: Could not build wheels for opencv-python which use PEP 517 and cannot be installed directly

ERROR: Could not build wheels for opencv-python which use PEP 517 and cannot be installed directly

python

opencv

cmake

docker

nvidia-jetson-nano