pip安装python三方库

‘壹’ python第三方库如何安装

1、在cmd命令行直接使用pip install 包名命令安装
示例：

注意：安装成功会显示Successfully installed keras，如果出现黄色字体警告，是由于pip库包不是最新的，但keras库已成功安装，可随后对pip包进行更新，更新命令：python -m pip install --upgrade pip。
2、手动下载第三方库，然后在cmd命令行使用pip install 下载文件名命令安装下载的第三方库（https://www.lfd.uci.e/~gohlke/pythonlibs/）
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‘贰’ python用了第三方库怎么在其他地方用

python用了第三方库在其他地方用的方法是采用pip工具安装。因为python自带了包管理器，在使用第三方库之后在别的地方可以使用pip命令自动安装，然后就可以在别的地方也使用这些第三方库了。

‘叁’ 如何在安装pip3以及第三方python库

• 环境

  OS:10.12.3 (16D32) macOS Sierra
  Python3: Python 3.6.1
  

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• 什么是pip

  Python之所以强大，其中一个原因是其丰富的第三方库。pip则是python第三方库的包管理工具。
  由于在Mac上python2和python3是共存的。因而python3对应的包管理工具的命令就是:pip3
  

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• 如何安装pip3

  如果通过homebrew安装python3，那么pip3会同时安装。所以建议直接通过homebrew安装python3:
  

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• $brew install python3//no need sudo1


• 如果你已经通过其他渠道安装了python3但是尚未安装pip3，那么需要通过以下步骤实现安装：12



https://pip.readthedocs.io/en/stable/installing/

• 上述的链接是官方给出的方法，但是有几个地方需要注意，最好按照我博客一步步来：12



https://bootstrap.pypa.io/get-pip.py

• 复制粘贴另存为链接中的文本,可以保存为get-pip.py。


• 注意：其中内容很多，必须等网页加载完再复制，然后通过已经安装的python3解释器解释执行另存为的文件123


• $python3 get-pip.py1



再次执行上述命令，显示:

• Requirement already up-to-date: pip in /usr/local/lib/python3.6/site-packages1



安装成功

• 如何安装第三方库

  有了pip3以后，安装第三方库就容易多了，比如：
  

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• $pip3 install requests


• Collecting requests


• Downloading requests-2.13.0-py2.py3-none-any.whl (584kB) 100% |████████████████████████████████| 593kB 298kB/s


• Installing collected packages: requests


• Successfully installed requests-2.13.0

‘肆’ python 第三方库怎么安装

【方法一】: 通过setuptools来安装python模块
首先下载
NOTE: 最好下载个setuptools，本人是15.2版本，里面包含了ez_setup
运行 python ez_setup.py
D:\work\installation\setuptools-15.2\setuptools-15.2>python ez_setup.py > 1.txt
Extracting in c:\users\admini~1\appdata\local\temp\tmpbxikxf
Now working in c:\users\admini~1\appdata\local\temp\tmpbxikxf\setuptools-15.2
Installing Setuptools
......
Copying setuptools-15.2-py2.7.egg to c:\python27\lib\site-packages
setuptools 15.2 is already the active version in easy-install.pth
Installing easy_install-script.py script to C:\Python27\Scripts
Installing easy_install.exe script to C:\Python27\Scripts
Installing easy_install-2.7-script.py script to C:\Python27\Scripts
Installing easy_install-2.7.exe script to C:\Python27\Scripts

Installed c:\python27\lib\site-packages\setuptools-15.2-py2.7.egg
Processing dependencies for setuptools==15.2
Finished processing dependencies for setuptools==15.2

运行 easy_install py
D:\work>easy_install py #py 为第三方库文件
Searching for py
Best match: py 1.4.26
Adding py 1.4.26 to easy-install.pth file

Using c:\python27\lib\site-packages
Processing dependencies for py
Finished processing dependencies for py

【方法二】: 通过pip来安装python模块
安装 easy_install pip
D:\work>easy_install pip
Searching for pip
Best match: pip 6.1.1
Processing pip-6.1.1-py2.7.egg
pip 6.1.1 is already the active version in easy-install.pth
Installing pip-script.py script to C:\Python27\Scripts
Installing pip.exe script to C:\Python27\Scripts
Installing pip2.7-script.py script to C:\Python27\Scripts
Installing pip2.7.exe script to C:\Python27\Scripts
Installing pip2-script.py script to C:\Python27\Scripts
Installing pip2.exe script to C:\Python27\Scripts

Using c:\python27\lib\site-packages\pip-6.1.1-py2.7.egg
Processing dependencies for pip
Finished processing dependencies for pip

运行 pip install xlrd
Usage:
pip <command> [options]

Commands:
install Install 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.
zip DEPRECATED. Zip indivial packages.
unzip DEPRECATED. Unzip indivial packages.
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> 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.
--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.

【方法三】:直接从网上下载下可执行文件来安装.
比如说，去 >>> pythonlibs <<< 网站，提供了很多Python非官方包下载，二进制文件，下载安装方便.