linux下安装python3.5和pip

环境：red hat 4.7
一.python3.5 安装

# 下载

# 解压

tar xvf  Python-3.5.0.tar.xz
cd Python-3.5.0

# 指定路径安装

./configure --prefix=/usr/local/python3
make 

make install

# 建立软连接

#不要覆盖原来版本的链接，所以最好起名python3

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

# 测试

python

二.安装pip

# 首先安装setuptools

yum install zlib-devel

# 从新编译python3 

cd /usr/local/python3

make

make install

#下载安装setuptools

wget –no-check-certificate  https://pypi.python.org/packages/source/s/setuptools/setuptools-19.6.tar.gz#md5=c607dd118eae682c44ed146367a17e26

tar -zxvf setuptools-19.6.tar.gz

cd setuptools-19.6

python3 setup.py build

python3 setup.py install

# 安装pip

wget –no-check-certificate  https://pypi.python.org/packages/source/p/pip/pip-8.0.2.tar.gz#md5=3a73c4188f8dbad6a1e6f6d44d117eeb

tar -zxvf pip-8.0.2.tar.gz

cd pip-8.0.2

python3 setup.py build

python3 setup.py install

如果报错。可能是缺少环境

yum install openssl-devel #完成后从新编译python3

# 建立软连接

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

# 测试 

pip