ubuntu 18.04 及初始化python3环境

网卡配置

root@u1804s:~# cat /etc/netplan/50-cloud-init.yaml    
# This file is generated from information provided by
# the datasource.  Changes to it will not persist across an instance.
# To disable cloud-init's network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
network:
    ethernets:
        ens33:
            addresses: [192.168.188.158/24]
            gateway4: 192.168.188.2
            dhcp4: true
            optional: true
    version: 2

sudo  netplan apply 

使用国内源

root@u1804s:~# cat ~/.pip/pip.conf
[global]
index-url = http://pypi.douban.com/simple
[install]
trusted-host=pypi.douban.com

阿里云 http://mirrors.aliyun.com/pypi/simple/

中国科技大学 https://pypi.mirrors.ustc.edu.cn/simple/ 

豆瓣(douban) http://pypi.douban.com/simple/ 

清华大学 https://pypi.tuna.tsinghua.edu.cn/simple/

中国科学技术大学 http://pypi.mirrors.ustc.edu.cn/simple/