Merge pull request #79 from mathstuf/avoid-division-by-zero

progress: avoid division by zero

progress/__init__.py

@@ -161,6 +161,8 @@ class Progress(Infinite):
 
     @property
     def progress(self):
+        if self.max == 0:
+            return 0
         return min(1, self.index / self.max)
 
     @property