[Rdkit-devel] [PATCH 04/17] pep8 clean

[Gianluca S. <gi...@gm...>]

---
 rdkit/Chem/Draw/canvasbase.py |   14 ++++++++++++--
 1 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/rdkit/Chem/Draw/canvasbase.py b/rdkit/Chem/Draw/canvasbase.py
index 86c13c5..bed4bd5 100644
--- a/rdkit/Chem/Draw/canvasbase.py
+++ b/rdkit/Chem/Draw/canvasbase.py
@@ -7,10 +7,18 @@
 #  which is included in the file license.txt, found at the root
 #  of the RDKit source tree.
 
+
 class CanvasBase:
     """ Base class for specialized canvas backends """
 
-    def addCanvasLine(self):
+    def addCanvasLine(self, p1, p2, color=(0, 0, 0), color2=None, **kwargs):
+        """ Draw a single line on the canvas
+
+            This function will draw a line between p1 and p2 with the
+            given color.
+            If color2 is specified, it will be used to draw the second half
+            of the segment
+        """
         assert False, 'This should be implemented'
 
     def addCanvasText(self):
@@ -18,7 +26,9 @@ class CanvasBase:
 
     def addCanvasPolygon(self):
         assert False, 'This should be implemented'
-        
+
     def addCanvasDashedWedge(self):
         assert False, 'This should be implemented'
 
+    def flush(self):
+        assert False, 'This should be implemented'
-- 
1.7.4