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演示系統：Ubuntu16.4 ； Python版本：3.6.5

如果你安裝的版本不同，那就改數字就行，比如3.5.2 ?！那就把下面的所有的3.6.5改為3.5.2。

1. 安裝依賴庫：

sudo apt-get install build-essential checkinstall
sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev

2. 下載Python 3.6.5：

mkdir -p /etc/python3.6
cd /etc/python3.6
wget https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tgz

3. 解壓下載的軟件包：

sudo tar xzf Python-3.6.5.tgz

4. 編譯Python源：

cd Python-3.6.5
sudo ./configure --enable-optimizations --prefix=/etc/python3.6
sudo make altinstall

5. 建立python3.6的軟鏈

ln -s /etc/python3.6/bin/python3.6 /usr/bin/python3.6
ln -s /etc/python3.6/bin/pip3.6 /usr/bin/pip3.6

6.將/etc/python3.6/bin加入PATH

vim ~/.bash_profile

# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/bin:/etc/python3.6/bin
export PATH

使生效

source ~/.bash_profile

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