python中如何安装pip工具

下载pip

地址：https://pypi.python.org/pypi/pip#downloads

注意选择tar.gz压缩包，目前最新版本为19.1.1，这里选择的版本是：pip-19.1.1.tar.gz (md5, pgp)

点击：下载

2. 解压安装

解压下载的压缩包至工作目录下（如D:\），打开Windows cmd，运行如下命令进入解压后的pip目录

cd /d D:\pip-19.1.1

使用如下命令进行安装

python setup.py install

3. 添加环境变量

添加windows系统环境变量，与安装python时添加的方法一样

如我的python目录是：F:\Python27\;

则添加如下2个目录到系统环境变量里：F:\Python27\;F:\Python27\Scripts;

4. pip常用命令

安装成功后，重新进入CMD后运行pip，可以看到帮助文档：

Usage:
pip<command>[options]
Commands:
installInstallpackages.
downloadDownloadpackages.
uninstallUninstallpackages.
freezeOutputinstalledpackagesinrequirementsformat.
listListinstalledpackages.
showShowinformationaboutinstalledpackages.
checkVerifyinstalledpackageshavecompatibledependencies.
configManagelocalandglobalconfiguration.
searchSearchPyPIforpackages.
wheelBuildwheelsfromyourrequirements.
hashComputehashesofpackagearchives.
completionAhelpercommandusedforcommandcompletion.
helpShowhelpforcommands.
GeneralOptions:
-h,--helpShowhelp.
--isolatedRunpipinanisolatedmode,ignoringenvironmentvariables
anduserconfiguration.
-v,--verboseGivemoreoutput.Optionisadditive,andcanbeusedupto
3times.
-V,--versionShowversionandexit.
-q,--quietGivelessoutput.Optionisadditive,andcanbeusedup
to3times(correspondingto
WARNING,ERROR,andCRITICALlogginglevels).
--log<path>Pathtoaverboseappendinglog.
--proxy<proxy>Specifyaproxyintheform[user:passwd@]proxy.server:port.
--retries<retries>Maximumnumberofretrieseachconnectionshouldattempt(default
5times).
--timeout<sec>Setthesockettimeout(default15seconds).
--exists-action<action>Defaultactionwhenapathalreadyexists:(s)witch,(i)gnore,(w)ipe,
(b)ackup,
(a)bort.
--trusted-host<hostname>Markthishostastrusted,eventhoughitdoesnothavevalidor
anyHTTPS.
--cert<path>PathtoalternateCAbundle.
--client-cert<path>PathtoSSLclientcertificate,asinglefilecontainingthe
privatekeyandthe
certificateinPEMformat.
--cache-dir<dir>Storethecachedatain<dir>.
--no-cache-dirDisablethecache.
--disable-pip-version-check
Don'tperiodicallycheckPyPItodeterminewhether
anewversionofpipisavailablefor
download.Impliedwith--no-index.
--no-colorSuppresscoloredoutput

pip常用命令如下：

#安装包
pipinstallxxx
#升级包，可以使用-U或者--upgrade
pipinstall-Uxxx
#卸载包
pipuninstallxxx
#列出已安装的包
piplist