linux下python3 pip 安装模块
# python3 -m pip install pymysql
1）检查pip.conf文件是否存在
>> cd ~
>> mkdir .pip
>> ls ~/.pip
2）直接编辑pip.conf
sudo vi ~/.pip/pip.conf
[global]
index-url = http://mirrors.aliyun.com/pypi/simple/[install]trusted-host = mirrors.aliyun.com
[global]
timeout = 6000
index-url = http://pypi.douban.com/simple/
或者：
[install]
use-mirrors = true
mirrors = http://pypi.douban.com/simple/
trusted-host = pypi.douban.com