Make WhiteBalance a named tuple

rawkit/options.py

@@ -35,7 +35,8 @@
 """
 
 
-class WhiteBalance(object):
+class WhiteBalance(namedtuple('WhiteBalance',
+                              ['auto', 'camera', 'greybox', 'rgbg'])):
 
     """
     Represents the white balance of a photo. If the camera white balance is
@@ -55,16 +56,9 @@ class WhiteBalance(object):
     :rtype: :class:`WhiteBalance`
     """
 
-    def __init__(self,
-                 auto=False,
-                 camera=False,
-                 greybox=None,
-                 rgbg=None):
-        """Initialize a white balance object."""
-        self.auto = auto
-        self.camera = camera
-        self.greybox = greybox
-        self.rgbg = rgbg
+    def __new__(cls, auto=True, camera=True, greybox=None, rgbg=None):
+        return super(WhiteBalance, cls).__new__(
+            cls, auto, camera, greybox, rgbg)
 
 
 class Options(object):
@@ -150,8 +144,8 @@ def white_balance(self):
         :default: WhiteBalance(auto=True, camera=True)
         :dcraw: ``-a``
                 ``-w``
-                ``-A x y w h``
-                ``-r mul0 mul1 mul2 mul3``
+                ``-A``
+                ``-r``
         :libraw: :class:`rawkit.libraw.libraw_output_params_t.use_auto_wb`
                  :class:`rawkit.libraw.libraw_output_params_t.use_camera_wb`
                  :class:`rawkit.libraw.libraw_output_params_t.greybox`