CentOS OpenCV-python

安装 Python3.6 及 opencv-python

yum -y install epel-release
yum -y install python36 python36-devel python36-pip python36-numpy
reboot(可选)
pip3 install --upgrade pip
pip install bpython
pip install opencv-python

# 如果安装中间提示低版本的numpy无法卸载，则强行安装新版本的numpy。
pip install numpy --ignore-installed numpy

测试 OpenCV

在 import cv2的时候报错，如下:

>>> import cv2 as cv
Traceback (most recent call last):
  File "<input>", line 1, in <module>
    import cv2 as cv
  File "/usr/local/lib64/python3.6/site-packages/cv2/__init__.py", line 3, in <module>
    from .cv2 import *
ImportError: libSM.so.6: 无法打开共享对象文件: 没有那个文件或目录

检查libSM.so.6在哪个包里，并安装它。

[root@localhost ~]# yum whatprovides libSM.so.6
已加载插件：fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.tuna.tsinghua.edu.cn
 * epel: mirrors.tuna.tsinghua.edu.cn
 * extras: mirrors.tuna.tsinghua.edu.cn
 * updates: mirrors.tuna.tsinghua.edu.cn
libSM-1.2.2-2.el7.i686 : X.Org X11 SM runtime library
源    ：base
匹配来源：
提供    ：libSM.so.6

yum -y install libSM
yum -y install libXrender
yum -y install libXext
#================================测试 OpenCV================================
[root@localhost ~]# bpython
bpython version 0.18 on top of Python 3.6.8 /usr/bin/python3.6
>>> import cv2 as cv
>>> print(cv.__version__)
4.1.0

安装 Django 并测试

pip install django==2.1.8			# django 版本太高要求相应的库也高 2.X就可以了

#================================测试 Django================================
[root@localhost ~]# bpython
bpython version 0.18 on top of Python 3.6.8 /usr/bin/python3.6
>>> import django
>>> django.VERSION
(2, 1, 8, 'final', 0)

测试建立网站

django-admin startproject wwwsite			# 建立项目
cd wwwsite
python3 manage.py startapp webtt			# 在项目下建立 app

#=== vi wwwsite/settings.py ===
ALLOWED_HOSTS = ["*",]						# 允许所有访问
INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'webtt',								#加入刚建的 app
]

#=== vi webtt/views.py ===
# coding:utf-8
from django.http import HttpResponse
def index(request):
    return HttpResponse(u"欢迎光临 whudee!")

#===  vi wwwsite/urls.py ===
from django.contrib import admin
from django.urls import path
from webtt import views as webtt_views		# new
urlpatterns = [
    path('', webtt_views.index),			# new
    path('admin/', admin.site.urls),
]

# 创建数据库表
python3 manage.py makemigrations
python3 manage.py migrate

# 设置防火墙
firewall-cmd --zone=public --add-port=80/tcp --permanent 	#开启80端口
systemctl restart firewalld									#重启防火墙

# 运行网站
python3 manage.py runserver 0.0.0.0:80		#监听机器上所有ip的80端口

安装 Apache 和 mod_wsgi

yum -y install httpd httpd-devel 		# 安装 apache 2.4 和它的开发包
yum -y install mod_wsgi -y				# 安装 mod_wsgi 3.4

(未完)