一、准备工作：
yum install zlib-devel
yum install openssl-devel
二、安装python3.5
wget https://www.python.org/ftp/python/3.5.3/Python-3.5.3.tgz
tar -zxvf Python-3.5.3.tgz
cd Python-3.5.3
./configure --prefix=/usr/local/python3 --enable-shared
make && make install
三、替换系统中的python
mv /usr/bin/python python.bak
ln -s /usr/local/python3.5/bin/python3 /usr/bin/python
由于更改系统默认的python会影响yum，需修改如下两个文件：
/usr/bin/yum和/usr/libexec/urlgrabber-ext-down
1 Known problems with Fedora Linux and Python 3 version: Error message: 2 # yum search package 3 File "/usr/bin/yum", line 30 4 except KeyboardInterrupt, e: 5 ^ 6 SyntaxError: invalid syntax 7 If you set python3 globally on your system change the yumshebang to python2: 8 # vi /usr/bin/yum 9 FROM: 10 #!/usr/bin/python 11 TO: 12 #!/usr/bin/python2.7 13 Similarly: Error message: 14 Downloading packages: 15 File "/usr/libexec/urlgrabber-ext-down", line 28 16 except OSError, e: 17 ^ 18 SyntaxError: invalid syntax 19 Exiting on user cancel 20 The issue is also related to Python 3 set as a default global version. To fix this error update/usr/libexec/urlgrabber-ext-down script: 21 # vi /usr/libexec/urlgrabber-ext-down 22 FROM: 23 #!/usr/bin/python 24 TO: 25 #!/usr/bin/python2.7
四、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
(如有报错： RuntimeError: Compression requires the (missing) zlib module，则需要安装yum install zlib-devel，安装后要重新编译 python3.5:
make && make install)
五、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
使用pip安装包测试：
如报错，则缺少yum install openssl-devel,安装完成后一样需要重新编译python3.5（make&&make install）
[root@localhost pip-9.0.1]# python -m pip install paramiko pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available. Collecting paramiko Could not fetch URL https://pypi.python.org/simple/paramiko/: There was a problem confirming the ssl certificate: Can't connect to HTTPS URL because the SSL module is not available. - skipping Could not find a version that satisfies the requirement paramiko (from versions: ) No matching distribution found for paramiko
参考：
http://www.tuicool.com/articles/j2ueiir