opencv macos 安装及测试

python3下安装+测试

➜  foo pip3 install pipenv
Requirement already satisfied: pipenv in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (2018.11.26)
Requirement already satisfied: virtualenv in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (from pipenv) (20.0.18)
Requirement already satisfied: virtualenv-clone>=0.2.5 in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (from pipenv) (0.5.4)
Requirement already satisfied: pip>=9.0.1 in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (from pipenv) (10.0.1)
Requirement already satisfied: setuptools>=36.2.1 in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (from pipenv) (39.0.1)
Requirement already satisfied: certifi in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (from pipenv) (2020.4.5.1)
Requirement already satisfied: distlib<1,>=0.3.0 in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (from virtualenv->pipenv) (0.3.0)
Requirement already satisfied: appdirs<2,>=1.4.3 in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (from virtualenv->pipenv) (1.4.3)
Requirement already satisfied: filelock<4,>=3.0.0 in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (from virtualenv->pipenv) (3.0.12)
Requirement already satisfied: importlib-metadata<2,>=0.12; python_version < "3.8" in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (from virtualenv->pipenv) (1.6.0)
Requirement already satisfied: six<2,>=1.9.0 in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (from virtualenv->pipenv) (1.14.0)
Requirement already satisfied: zipp>=0.5 in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (from importlib-metadata<2,>=0.12; python_version < "3.8"->virtualenv->pipenv) (3.1.0)
You are using pip version 10.0.1, however version 20.1b1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
➜  foo pipenv shell
Creating a virtualenv for this project…
Pipfile: /Users/apple/tmp/foo/Pipfile
Using /usr/local/Cellar/pipenv/2018.11.26_4/libexec/bin/python3.8 (3.8.2) to create virtualenv…
⠙ Creating virtual environment...created virtual environment CPython3.8.2.final.0-64 in 770ms
  creator CPython3Posix(dest=/Users/apple/.local/share/virtualenvs/foo-YrjtMjq1, clear=False, global=False)
  seeder FromAppData(download=False, pip=latest, setuptools=latest, wheel=latest, via=copy, app_data_dir=/Users/apple/Library/Application Support/virtualenv/seed-app-data/v1)
  activators BashActivator,CShellActivator,FishActivator,PowerShellActivator,PythonActivator,XonshActivator

✔ Successfully created virtual environment! 
Virtualenv location: /Users/apple/.local/share/virtualenvs/foo-YrjtMjq1
Creating a Pipfile for this project…
Launching subshell in virtual environment…
 . /Users/apple/.local/share/virtualenvs/foo-YrjtMjq1/bin/activate
➜  foo  . /Users/apple/.local/share/virtualenvs/foo-YrjtMjq1/bin/activate
(foo) ➜  foo ls
Pipfile
(foo) ➜  foo exit
➜  foo 

pipenv install flask---安装flask库
pipenv uninstall flask---删除flask库
pipenv shell ---进入虚拟环境
exit---推出虚拟环境
pipenv graph---查看依赖关系
pipenv --venv---查看虚拟环境名称

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