Python 中pip安装第三方库的心得体会

一、pip的简述

pip是Python的内置命令，需通过命令执行。但这里不能再IDLE环境下运行pip程序。Python3.5及其以上版本中自带了pip工具，只需调用即可。

二、操作步骤：

前提条件：在Python所在的盘

首先打开以交互式方式打开Python，（cmd）；

然后代码

C:\Users\freel>cd\>Sripts #这里的Scripts是包含了pip.exe的默认文件的。

C:\>pip -h

结果如下：

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.
  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.
  --log                 Path to a verbose appending log.
  --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.
  --trusted-host    Mark this host as trusted, even though it does
                              not have valid or any HTTPS.
  --cert                Path to alternate CA bundle.
  --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.

这是调用之后，用pip安装第三方库jieba的代码：

C:\>pip install jieba
Collecting jieba
  Downloading jieba-0.39.zip (7.3MB)
    4% |█▌                              | 337kB 24kB/s eta 0:04:48

耐心等待，自动安装。