WIN
1.在電腦上輸入路徑： %APPDATA%
2.回車跳轉到賬戶的AppData\Roaming\目錄，創建pip文件夾
3.創建記事本，輸入以下內容，保存重命名爲pip.ini（注意：源鏡像可替換）
[global]
timeout = 6000
index-url = https://pypi.tuna.tsinghua.edu.cn/simple
trusted-host = pypi.tuna.tsinghua.edu.cn
Ubuntu
方法1：更換全部源
1.備份：sudo cp /etc/apt/sources.list sources.list_backup
2.編輯:sudo vim /etc/apt/sources.list
deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted
deb http://mirrors.aliyun.com/ubuntu/ bionic universe
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates universe
deb http://mirrors.aliyun.com/ubuntu/ bionic multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted
deb http://mirrors.aliyun.com/ubuntu/ bionic-security universe
deb http://mirrors.aliyun.com/ubuntu/ bionic-security multiverse
3.更新sudo apt-get update
方法2：
1.打開用戶賬戶，cd/home/xx，創建pip文件夾，創建pip.conf
2.添加內容：
[global]
timeout = 6000
index-url = https://pypi.tuna.tsinghua.edu.cn/simple
trusted-host = mirrors.aliyun.com
3.更新sudo apt-get update
4.國內源鏡像有：(更換第三行)
V2EX：http://pypi.v2ex.com/simple/
阿里雲：http://mirrors.aliyun.com/pypi/simple/
豆瓣：http://pypi.douban.com/simple/
中國科學技術大學：http://pypi.mirrors.ustc.edu.cn/simple/
清華大學：https://pypi.tuna.tsinghua.edu.cn/simple/