Bug 3011: change old-style classes to new-style classes

svn: r12559

src/plugins/drawreport/AncestorTree.py

@@ -68,7 +68,7 @@ def log2(val):
 # Layout class
 #
 #------------------------------------------------------------------------
-class GenChart:
+class GenChart(object):
 
     def __init__(self, generations):
         self.generations = generations

src/plugins/drawreport/DescendTree.py

@@ -66,7 +66,7 @@ _PERSON_SPOUSE = 2
 # Layout class
 #
 #------------------------------------------------------------------------
-class GenChart:
+class GenChart(object):
 
     def __init__(self, generations):
         self.generations = generations

src/plugins/drawreport/StatisticsChart.py

@@ -78,7 +78,7 @@ class _options:
 # Data extraction methods from the database
 #
 #------------------------------------------------------------------------
-class Extract:
+class Extract(object):
 
     def __init__(self):
         """Methods for extracting statistical data from the database"""