linux 安裝 python3

0.配置依賴環境

sudo apt-get update
sudo apt-get install zlib1g-dev libbz2-dev libssl-dev libncurses5-dev libsqlite3-dev 
libreadline-dev tk-dev libgdbm-dev libdb-dev libpcap-dev xz-utils libexpat1-dev 
liblzma-dev libffi-dev libc6-dev

1.去官網下載找想的版本

Python

比如 python3.7   下載 並 解壓

wget https://www.python.org/ftp/python/3.7.3/Python-3.7.3.tgz
tar zxvf Python-3.7.3.tgz

2，進入解壓目錄 並 建立安裝的目錄

cd Python-3.7.3/
sudo mkdir -p /usr/local/python3

3編譯安裝

./configure --prefix=/usr/local/python3  --enable-optimizations
make
sudo make install

4.查看 並 刪除已有軟鏈接

查看
python3 -V

pip3 -V

刪除
rm -rf /usr/bin/python3
rm -rf /usr/bin/pip3

5.建立新的軟鏈接

#添加python3的軟鏈接
ln -s /usr/local/python3/bin/python3.7 /usr/bin/python3
#添加 pip3 的軟鏈接
ln -s /usr/local/python3/bin/pip3.7 /usr/bin/pip3

6.檢測版本

python3 -V

pip3 -V

參考

https://segmentfault.com/a/1190000018264955?utm_source=tag-newest