问题：
在VS2022中Python下import不到cv2，就在cmd上去pip安装，安装过程出错，
C:UsersSueMagic>pip install opencv-python
'pip' 不是内部或外部命令，也不是可运行的程序
或批处理文件。
C:UsersSueMagic>pip
'pip' 不是内部或外部命令，也不是可运行的程序
或批处理文件。
C:UsersSueMagic>python -m pip install --upgrade pip
C:Program FilesMicrosoft Visual Studio2022CommunityCommon7IDECommonExtensionsMicrosoftVCSecurityIssueAnalysispythonpython.exe: No module named pip
C:UsersSueMagic>
原因：
系统变量中的PATH环境变量添加的文件位置不对
解决：
重新设置位置（当前VS版本的Python文件位置都是在Microsoft Visual StudioShared这个文件夹下）
更改后：
C:UsersSueMagic>pip
Usage:
pip [options]
Commands:
install Install packages.
download Download packages.
uninstall Uninstall packages.
freeze Output installed packages in requirements format.
list List installed packages.
show Show information about installed packages.
check Verify installed packages have compatible dependencies.
config Manage local and global configuration.
search Search PyPI for packages.
cache Inspect and manage pip's wheel cache.
index Inspect information available from package indexes.
wheel Build wheels from your requirements.
hash Compute hashes of package archives.
completion A helper command used for command completion.
debug Show information useful for debugging.
help Show help for commands.
General Options:
-h, --help Show help.
--isolated Run pip in an isolated mode, ignoring environment variables and user configuration.
-v, --verbose Give more output. Option is additive, and can be used up to 3 times.
-V, --version Show version and exit.
-q, --quiet Give less output. Option is additive, and can be used up to 3 times (corresponding to
WARNING, ERROR, and CRITICAL logging levels).
--log Path to a verbose appending log.
--no-input Disable prompting for input.
--proxy Specify a proxy in the form [user:passwd@]proxy.server:port.
--retries Maximum number of retries each connection should attempt (default 5 times).
--timeout Set the socket timeout (default 15 seconds).
--exists-action Default action when a path already exists: (s)witch, (i)gnore, (w)ipe, (b)ackup,
(a)bort.
--trusted-host Mark this host or host:port pair as trusted, even though it does not have valid or any
HTTPS.
--cert Path to PEM-encoded CA certificate bundle. If provided, overrides the default. See 'SSL
Certificate Verification' in pip documentation for more information.
--client-cert Path to SSL client certificate, a single file containing the private key and the
certificate in PEM format.
--cache-dir Store the cache data in .
--no-cache-dir Disable the cache.
--disable-pip-version-check
Don't periodically check PyPI to determine whether a new version of pip is available for
download. Implied with --no-index.
--no-color Suppress colored output.
--no-python-version-warning
Silence deprecation warnings for upcoming unsupported Pythons.
--use-feature Enable new functionality, that may be backward incompatible.
--use-deprecated Enable deprecated functionality, that will be removed in the future.
C:UsersSueMagic>
类似情况如下，大部分是环境变量配置问题
C:UsersSueMagic>conda
'conda' 不是内部或外部命令，也不是可运行的程序
或批处理文件。
C:UsersSueMagic>
