# update system

sudo apt update && sudo apt upgrade -y

# install build tools and python prerequisites (這個必須先執(zhí)行，不然后面有很多坑)

sudo apt install build-essential libssl-dev zlib1g-dev libncurses5-dev libncursesw5-dev libreadline-dev libsqlite3-dev libgdbm-dev libdb5.3-dev libbz2-dev libexpat1-dev liblzma-dev tk-dev libffi-dev

# download?Python-3.8.6.tgz

wget https://www.python.org/ftp/python/3.8.6/Python-3.8.6.tgz

# 解壓

tar -zxf Python-3.8.6.tgz

# 進入python3.8.6

cd Python-3.8.6

# 編譯文件? 時間大概有1-3分鐘

./configure --prefix=/usr/local/python3

# 編譯好后，會有另外一個提示，讓run ./configure xxx

./configure --enable-optimizations

# 安裝（注意權(quán)限，用root）

make && make install

我這邊因為原來的unbuntu有python，所以需要將原來的軟連接刪除，重新創(chuàng)建；

# 備份原先的軟鏈接?

sudo -s mv /usr/bin/python /usr/bin/python.bak?

sudo -s mv /usr/bin/pip /usr/bin/pip.bk?

# 設(shè)置新的軟鏈接 ln -s? /usr/local/python3.8/bin/python3.8(每個人不一樣)?/usr/bin/python?

ln -s /usr/local/python3.8/bin/pip3.8(每個人不一樣) /usr/bin/pip

# 查看效果

python -V

pip -V

# 結(jié)束

可關(guān)注以下鏈接：

http://events.jianshu.io/p/261e1d52f471

https://gist.github.com/jerblack/798718c1910ccdd4ede92481229043be