1.查看Python已安装模块
运行cmd，列出所有模块名
pip list 会出现你电脑中已安装的
C:\Users\a>pip list Package Version -------------------- -------- requests 2.21.0 scikit-learn 0.21.1 scimath 4.2.0 scipy 1.2.1 Scrapy 1.6.0 seaborn 0.9.0 serverfiles 0.3.0 service-identity 18.1.0 setuptools 40.8.0 six 1.12.0 sklearn 0.0 soupsieve 1.9.2 tensorboard 1.13.1 tensorflow 1.13.1 tensorflow-estimator 1.13.0 termcolor 1.1.0 traits 5.1.1 tryalgo 1.3.0 Twisted 19.2.0 typed-ast 1.4.0 typing 3.6.6 urllib3 1.24.3 2.更新Python模块,例如更新 tensorflow
python -m pip install --upgrade tensorflow 更新完成
Successfully installed google-pasta-0.1.7 setuptools-41.2.0 tensorboard-1.14.0 tenso rflow-1.14.0 tensorflow-estimator-1.14.0 3.pip工具的更新 python -m pip install --upgrade pip 4.查看 pip 的帮助和更多命令 pip -h 会出现
Usage: pip <command> [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. 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> Path to a verbose appending log. --proxy <proxy> Specify a proxy in the form [user:passwd@]proxy.server:port. --retries <retries> Maximum number of retries each connection should attempt (default 5 times). --timeout <sec> Set the socket timeout (default 15 seconds). --exists-action <action> Default action when a path already exists: (s)witch, (i)gnore, (w)ipe, (b)ackup, (a)bort. --trusted-host <hostname> Mark this host as trusted, even though it does not have valid or any HTTPS. --cert <path> Path to alternate CA bundle. --client-cert <path> Path to SSL client certificate, a single file containing the private key and the certificate in PEM format. --cache-dir <dir> Store the cache data in <dir>. --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
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