# Linux安装python2.7.17      https://www.python.org/downloads/

cd /usr/local

yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make -y

wget https://www.python.org/ftp/python/2.7.17/Python-2.7.17.tgz

tar -xzvf Python-2.7.17.tgz  &&  rm -rf  Python-2.7.17.tgz  &&  cd Python-2.7.17

./configure --prefix=/usr/local/Python2.7.17 --enable-shared -enable-unicode=ucs4

make && make install

python -V

# python解释器指向python2.7.17

which python  &&  cd /usr/bin   &&  rm python

ln -s /usr/local/Python2.7.17/bin/python python

python -V  --执行报错

# 解决python -V执行报错

cd /etc/ld.so.conf.d/    &&   echo "/usr/local/Python2.7.17/lib" > python2.7.conf   &&   ldconfig

python -V

# 由于yum使用了原来python2.7的一些脚本，需要将yum重新导向原来的python2.7解释器才可以使用

which yum

vi /usr/bin/yum     #!/usr/bin/python2.7

# 安装sip(如果使用过程中有报错再安装)

wget https://excellmedia.dl.sourceforge.net/project/pyqt/sip/sip-4.16.8/sip-4.16.8.tar.gz

tar -xzvf sip-4.16.8.tar.gz

cd sip-4.16.8

python configure.py

make

make install

ln -s /usr/local/Python2.7.17/bin/sip /usr/bin/sip

sip -V

cd ../

# PyQt5编译安装(如果使用过程中有报错再安装)  # which python

cd /opt

wget https://excellmedia.dl.sourceforge.net/project/pyqt/PyQt5/PyQt-5.2.1/PyQt-gpl-5.2.1.tar.gz

tar -xzvf PyQt-gpl-5.2.1.tar.gz

cd PyQt-gpl-5.2.1

python configure.py --sip-incdir=/usr/local/Python2.7.17

make -j4

make install

cd  ../