Make image ratings properties

imgrate.py

@@ -5,16 +5,18 @@ from argparse import ArgumentParser
 from functools import wraps
 
 
+
 def image_required(fun):
     @wraps(fun)
     def wrapper(self, *args, **kwargs):
         if self.image is None:
-            raise RuntimeError('Method {}.{} requires an image!'
+            raise RuntimeError('Property {}.{} requires an image!'
                                .format(self.__class__.__name__, fun.__name__))
         return fun(self, *args, **kwargs)
     return wrapper
 
 
+
 class imgrate:
     def __init__(self, imgfile=None):
         self.image = None
@@ -24,10 +26,12 @@ class imgrate:
         image = cv2.imread(imgfile)
         self.image = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
 
+    @property
     @image_required
-    def laplacian_variance(self):
+    def laplacian(self):
         return cv2.Laplacian(self.image, cv2.CV_64F).var()
 
+    @property
     @image_required
     def fdibm(self):
         F = np.fft.fft2(self.image)
@@ -38,9 +42,10 @@ class imgrate:
         return Th / (F.shape[0] * F.shape[1])
 
 
+
 if __name__ == '__main__':
     ap = ArgumentParser()
     ap.add_argument('images', type=str, nargs='+', help='')
     args = ap.parse_args()
 
-    print(imgrate(args.images[0]).laplacian_variance())
+    print(imgrate(args.images[0]).laplacian)