pip install obfsproxy
/usr/lib/python2.6/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning
You are using pip version 7.1.0, however version 8.1.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Collecting obfsproxy
/usr/lib/python2.6/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning
  Downloading obfsproxy-0.2.13.tar.gz (93kB)
    100% |████████████████████████████████| 94kB 39kB/s
Requirement already satisfied (use --upgrade to upgrade): setuptools in /usr/lib/python2.6/site-packages (from obfsproxy)
Collecting PyCrypto (from obfsproxy)
  Downloading pycrypto-2.6.1.tar.gz (446kB)
    100% |████████████████████████████████| 446kB 259kB/s
Collecting Twisted (from obfsproxy)
  Downloading Twisted-16.1.1.tar.bz2 (2.9MB)
    100% |████████████████████████████████| 2.9MB 95kB/s
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 20, in <module>
      File "/tmp/pip-build-7aeuJC/Twisted/setup.py", line 57, in <module>
        main(sys.argv[1:])
      File "/tmp/pip-build-7aeuJC/Twisted/setup.py", line 36, in main
        from twisted.python.dist import (
      File "./twisted/__init__.py", line 55, in <module>
        _checkRequirements()
      File "./twisted/__init__.py", line 17, in _checkRequirements
        raise ImportError("Twisted requires Python 2.7 or later.")
    ImportError: Twisted requires Python 2.7 or later.

#try again after installing these packages
yum -y install python-crypto gcc make

pip install obfsproxy
#same result as before
 ImportError: Twisted requires Python 2.7 or later.

#there is no python 2.7 package for Centos 6

#build it ourselves

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