C: \ PIP - 9.0.1 & gt; Python setup. Py install
Traceback (the most recent call last) :
The File "setup. Py", line 92, in & lt; module>
Cmdclass={' test ': PyTest},
The File "C: \ Python27 \ lib \ distutils \ core py", line 111, in the setup
_setup_distribution=dist=klass (attrs)
The File "C: \ Python27 \ lib \ site - packages \ setuptools \ dist py", line 225, in __init__
_Distribution. __init__ (self, attrs)
The File "C: \ Python27 \ lib \ distutils \ dist py", line 287, in __init__
Self. Finalize_options ()
The File "C: \ Python27 \ lib \ site - packages \ setuptools \ dist py", line 258, in finalize_options
Ep. The load () (self, ep. Name, value)
The File "C: \ Python27 \ lib \ site - packages \ pkg_resources \ set py", line 2287, in the load
Return the self. The resolve ()
File "C: \ Python27 \ lib \ site - packages \ pkg_resources \ set py", line 2297, resolve in
Raise ImportError (STR (exc))
ImportError: 'module' object has no attribute 'check_specifier'

Which great god to give directions, thank you very much,