def cython(pyx_files, working_path=''):
 if ((len(sys.argv) >= 2) and (sys.argv[1] == 'clean')):
  return
 try:
  from Cython import __version__
  if (LooseVersion(__version__) < '0.23'):
   raise RuntimeError('Cython >= 0.23 needed to build scikit-image')
  from Cython.Build import cythonize
 except ImportError:
  print ('Cython not found; falling back to pre-built %s' % ' '.join([f.replace('.pyx.in', 'c').replace('.pyx', '.c') for f in pyx_files]))
 else:
  for pyxfile in [os.path.join(working_path, f) for f in pyx_files]:
   if (not _changed(pyxfile)):
    continue
   if pyxfile.endswith('.pyx.in'):
    process_tempita_pyx(pyxfile)
    pyxfile = pyxfile.replace('.pyx.in', '.pyx')
   cythonize(pyxfile)

def cython ( pyx_files , working_path = '' ) : if ( ( len ( sys . argv ) >= 2 ) and ( sys . argv [ 1 ] == 'clean' ) ) : return try : from Cython import __version__ if ( LooseVersion ( __version__ ) < '0.23' ) : raise RuntimeError ( 'Cython >= 0.23 needed to build scikit-image' ) from Cython . Build import cythonize except ImportError : print ( 'Cython not found; falling back to pre-built %s' % ' ' . join ( [ f . replace ( '.pyx.in' , 'c' ) . replace ( '.pyx' , '.c' ) for f in pyx_files ] ) ) else : for pyxfile in [ os . path . join ( working_path , f ) for f in pyx_files ] : if ( not _changed ( pyxfile ) ) : continue if pyxfile . endswith ( '.pyx.in' ) : process_tempita_pyx ( pyxfile ) pyxfile = pyxfile . replace ( '.pyx.in' , '.pyx' ) cythonize ( pyxfile )
use cython to convert the given files to c .