安装pip

pip是常用的python包管理工具。

一、在系统自带的python2.7的路径下安装pip

在Python2.7的安装包中,easy_install.py是默认安装的,而pip需要我们手动安装。

sudo easy_install pip
Searching for pip
Reading https://pypi.org/simple/pip/
Downloading https://files.pythonhosted.org/packages/5a/4a/39400ff9b36e719bdf8f31c99fe1fa7842a42fa77432e584f707a5080063/pip-20.2.2-py2.py3-none-any.whl#sha256=5244e51494f5d1dfbb89da492d4250cb07f9246644736d10ed6c45deb1a48500
Best match: pip 20.2.2
Processing pip-20.2.2-py2.py3-none-any.whl
Installing pip-20.2.2-py2.py3-none-any.whl to /Library/Python/2.7/site-packages
Adding pip 20.2.2 to easy-install.pth file
Installing pip script to /usr/local/bin
Installing pip3.8 script to /usr/local/bin
Installing pip3 script to /usr/local/bin

Installed /Library/Python/2.7/site-packages/pip-20.2.2-py2.7.egg
Processing dependencies for pip
Finished processing dependencies for pip

二、在python3.x的路径下安装pip

curl https://bootstrap.pypa.io/get-pip.py | python3
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 1840k  100 1840k    0     0  45105      0  0:00:41  0:00:41 --:--:--  267k
Collecting pip
  Downloading pip-20.2.2-py2.py3-none-any.whl (1.5 MB)
     |████████████████████████████████| 1.5 MB 55 kB/s 
Installing collected packages: pip
  Attempting uninstall: pip
    Found existing installation: pip 19.1.1
    Uninstalling pip-19.1.1:
      Successfully uninstalled pip-19.1.1
Successfully installed pip-20.2.2

三、安装验证

pip --version
pip 20.2.2 from /Library/Python/2.7/site-packages/pip-20.2.2-py2.7.egg/pip (python 2.7)
pip3 --version
pip 19.0.3 from /Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.7/lib/python3.7/site-packages/pip (python 3.7)

四、更新pip

pip install --upgrade pip
 pip3 install --upgrade pip

如果升级失败,使用以下命令升级

python -m pip install -U --force-reinstall pip

五、卸载pip

python -m pip uninstall pip
python3 -m pip uninstall pip

六、安装第三方包

pip install 包名

七、卸载第三方包

pip uninstall 包名

八、查询已安装的包

pip list

九、更换国内镜像源

# linux下,修改 ~/.pip/pip.conf (没有就创建一个), 修改 index-url至tuna,内容如下:

 [global]
 index-url = https://pypi.tuna.tsinghua.edu.cn/simple
# windows下,直接在user目录中创建一个pip目录,如:C:\Users\xx\pip,新建文件pip.ini,内容如下

 [global]
 index-url = https://pypi.tuna.tsinghua.edu.cn/simple

十、例子:安装numpy

下载地址:https://www.lfd.uci.edu/~gohlke/pythonlibs/

img

执行:numpy包名称要加英文双引号。

pip install “[numpy包名称] ”

10.1、另一种方式安装包

setup.py  https://pypi.python.org/pypi
  • 先下载你要安装的包,并解压到磁盘下;

  • 进入到该文件的setup.py 目录下 ,打开cmd,并切换到该目录下;

  • 先执行 python setup.py build

  • 然后执行 python setup.py install

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