在Linux上安装Python3

# yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel

# wget https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tgz

# mkdir -p /usr/local/python3

# tar -zxvf Python-3.6.1.tgz

# cd Python-3.6.1
# ./configure --prefix=/usr/local/python3

# make

make install    或者 make && make install

# ln -s /usr/local/python3/bin/python3 /usr/bin/python3

# 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:/usr/local/python3/bin
export PATH

# source ~/.bash_profile

# python3 -V
Python 3.6.1
# pip3 -V
pip 9.0.1 from /usr/local/python3/lib/python3.6/site-packages (python 3.6)

# ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3