1.安裝依賴包

sudo apt-get update

sudo apt-get install build-essential python-dev python-setuptools python-pip python-smbus

sudo apt-get install build-essential libncursesw5-dev libgdbm-dev libc6-dev

sudo apt-get install zlib1g-dev libsqlite3-dev tk-dev

sudo apt-get install libssl-dev openssl

sudo apt-get install libffi-dev

2. 安裝pyenv

 git clone git://github.com/yyuu/pyenv.git ~/.pyenv
 echo ‘export PYENV_ROOT="$HOME/.pyenv"‘ >> ~/.bashrc
 echo ‘export PATH="$PYENV_ROOT/bin:$PATH"‘ >> ~/.bashrc
 echo ‘eval "$(pyenv init -)"‘ >> ~/.bashrc
 exec $SHELL -l

3. 安裝 python3.7.0

pyenv install 3.7.0 -v
3.1安裝完成之後，需要使用如下命令對數據庫進行更新：
pyenv rehash
3.2查看已經安裝的python版本：
pyenv versions
* system (set by /root/.pyenv/version)
3.7.0
 

4.設置全局python版本

pyenv global 3.7.0 

ubuntu16.04安裝python3.7