sudo su

root@server_name:/apps/app_name# pip install bcryptCollectingbcryptUsingcached bcrypt-2.0.0.tar.gzRequirementalready satisfied(use--upgrade to upgrade):cffi>=1.1in/usr/local/lib/python2.7/dist-packages(frombcrypt)Requirementalready satisfied(use--upgrade to upgrade):six>=1.4.1in/usr/local/lib/python2.7/dist-packages(frombcrypt)Requirementalready satisfied(use--upgrade to upgrade):pycparserin/usr/local/lib/python2.7/dist-packages(fromcffi>=1.1->bcrypt)Installingcollected packages:bcryptRunningsetup.py installforbcrypt...errorCompleteoutputfromcommand/usr/bin/python-u-c"import setuptools, tokenize;__file__='/tmp/pip-build-UQAoWx/bcrypt/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))"install--record/tmp/pip-BL_G1e-record/install-record.txt--single-version-externally-managed--compile:Traceback(most recent call last):File"",line1,inFile"/tmp/pip-build-UQAoWx/bcrypt/setup.py",line226,in**keywords_with_side_effects(sys.argv)File"/usr/lib/python2.7/distutils/core.py",line112,insetup

_setup_distribution=dist=klass(attrs)File"/usr/lib/python2.7/dist-packages/setuptools/dist.py",line225,in__init___Distribution.__init__(self,attrs)File"/usr/lib/python2.7/distutils/dist.py",line287,in__init__

self.finalize_options()File"/usr/lib/python2.7/dist-packages/setuptools/dist.py",line258,infinalize_options

ep.load()(self,ep.name,value)File"/usr/local/lib/python2.7/dist-packages/cffi/setuptools_ext.py",line161,incffi_modules

add_cffi_module(dist,cffi_module)File"/usr/local/lib/python2.7/dist-packages/cffi/setuptools_ext.py",line48,inadd_cffi_module

execfile(build_file_name,mod_vars)File"/usr/local/lib/python2.7/dist-packages/cffi/setuptools_ext.py",line24,inexecfileexec(code,glob,glob)File"src/build_bcrypt.py",line29,in"""

File "/usr/local/lib/python2.7/dist-packages/cffi/api.py", line 105, in cdef

self._cdef(csource, override=override, packed=packed)

File "/usr/local/lib/python2.7/dist-packages/cffi/api.py", line 119, in _cdef

self._parser.parse(csource, override=override, **options)

File "/usr/local/lib/python2.7/dist-packages/cffi/cparser.py", line 290, in parse

self._internal_parse(csource)

File "/usr/local/lib/python2.7/dist-packages/cffi/cparser.py", line 295, in _internal_parse

ast, macros, csource = self._parse(csource)

File "/usr/local/lib/python2.7/dist-packages/cffi/cparser.py", line 230, in _parse

csource, macros = _preprocess(csource)

File "/usr/local/lib/python2.7/dist-packages/cffi/cparser.py", line 138, in _preprocess

if pycparser.__version__ < '2.14':

AttributeError: 'module' object has no attribute '__version__'

----------------------------------------

Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-UQAoWx/bcrypt/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-BL_G1e-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-UQAoWx/bcrypt