pip 使用必知必会

安装：

sudo apt-get install python-pip

查看已安装的包的详细情况：

pip show --files SomePackage

检查哪些包可以更新：

pip list --outdated

升级包：

pip install --upgrade SomePackage

卸载包：

pip uninstall SomePackage

帮助：

shaun@ShaunZheng:~$ pip --help

Usage:   
  pip <command> [options]

Commands:
  install                     Install packages.
  download                    Download packages.
  uninstall                   Uninstall packages.
  freeze                      按着一定格式输出已安装包列表
  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.
  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