def get_python_exec(ver):
 try:
  return PYEXECS[ver]
 except KeyError:
  raise ValueError(('Version %s not supported/recognized' % ver))

def get_python_exec ( ver ) : try : return PYEXECS [ ver ] except KeyError : raise ValueError ( ( 'Version %s not supported/recognized' % ver ) )
return the executable of python for the given version .