install pyOpenSSL in python2.7

[水静流深]

i have install  pyOpenSSL-0.11  in python2.7  this way:
download  pyOpenSSL-0.11.tar.gz
 #tar -zvxf pyOpenSSL-0.11.tar.gz
 #cd pyOpenSSL-0.11
 #python setup.py install

>>> import  OpenSSL
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/OpenSSL/__init__.py", line 45, in <module>
    from OpenSSL import rand, SSL
ImportError: /usr/local/lib/python2.7/dist-packages/OpenSSL/SSL.so: undefined symbol: SSLv2_method


how can i fix the  problem?
ImportError: /usr/local/lib/python2.7/dist-packages/OpenSSL/SSL.so: undefined symbol: SSLv2_method
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