ubuntu更新python版本

1.解决依赖

sudo apt install build-essential zlib1g-dev libncurses5-dev libgdbm-dev libnss3-dev libssl-dev libreadline-dev libffi-dev wget

2.下载想安装的python版本

wget https://www.python.org/ftp/python/3.7.4/Python-3.7.4.tgz

3.解压压缩包

tar -xzvf Python-3.7.4.tgz

4.指定安装路径

cd Python-3.7.4
./configure --prefix=/usr/bin/python37  # 配置安装位置
sudo make
sudo make install

5.删除旧的软连接，创建新的软连接

sudo rm /usr/bin/python
sudo ln -s /usr/bin/python37/bin/python3.7 /usr/bin/python
sudo rm /usr/bin/pip
sudo ln -s /usr/bin/python37/bin/pip3.7 /usr/bin/pip