ubuntu18.4 升级Python到3.8版本

1. 下载源码

wget <https://www.python.org/ftp/python/3.8.0/Python-3.8.0.tgz>

2. 解压

tar -zxvf Python-3.8.0.tgz

3. 切换目录

cd Python-3.8.0

4 .配置安装环境

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

5. 安装依赖

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install build-essential python-dev python-setuptools python-pip python-smbus libncursesw5-dev libgdbm-dev zlib1g-dev libsqlite3-dev tk-dev libssl-dev openssl libffi-dev

6. make and make install

make
sudo make install

7. 删除软连接

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

8. 新建软连接

sudo ln -s /usr/local/python3/bin/python3.8 /usr/bin/python3
sudo ln -s /usr/local/python3/bin/pip3.8 /usr/bin/pip3

9. 测试是否安装成功

python3

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