linux系統
1.下載python3.7.3源碼壓縮包https://www.python.org/downloads/release/python-373/
2.解壓壓縮包
sudo tar Jxvf Python-3.7.3.tar.xz
3.解決安裝依賴
同時安裝多個軟件包（已安裝的會自動忽略）, -y 表示對所有詢問都回答 Yes
sudo apt-get install -y gcc make build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev xz-utils tk-dev libffi-dev liblzma-dev
4.進入解壓后目錄終端執行
sudo ./configure --prefix=/usr/local/Python-3.7.3 --with-ssl --enable-optimizations
5.執行sudo make && sudo make install
6.設置環境變量
打開~/.bashrc文件，寫入PATH=$PATH:/usr/local/Python3.7.3/bin
或者設置軟鏈接
ln -s /usr/local/Python-3.7.3 /usr/bin/python3
7.安裝python所需的依賴
sudo apt-get install python3-pip
sudo apt-get install python3-venv