--- a/python/c3/astnodes.py	Sat Jun 29 10:10:45 2013 +0200
+++ b/python/c3/astnodes.py	Sun Jun 30 19:00:41 2013 +0200
@@ -9,7 +9,7 @@
    def __init__(self, tname):
       self.tname = tname
    def __repr__(self):
-      return 'DESIGNATOR {0}'.format(self.tname)
+      return 'DESIGNATOR {}'.format(self.tname)
 
 """
 Type classes
@@ -23,7 +23,7 @@
   def __init__(self, name):
     self.name = name
   def __repr__(self):
-    return '{0}'.format(self.name)
+    return '{}'.format(self.name)
 
 class FunctionType(Type):
    def __init__(self, parametertypes, returntype):
@@ -68,7 +68,7 @@
       self.isReadOnly = False
       self.isParameter = False
    def __repr__(self):
-      return '{0}'.format(self.name)
+      return '{}'.format(self.name)
 
 # Procedure types
 class Function(Symbol):
@@ -76,7 +76,7 @@
    def __init__(self, name):
       super().__init__(name)
    def __repr__(self):
-      return '{0}'.format(self.name)
+      return '{}'.format(self.name)
 
 # Operations / Expressions:
 class Unop(Node):
@@ -84,7 +84,7 @@
       self.a = a
       self.op = op 
    def __repr__(self):
-      return 'UNOP {0}'.format(self.op)
+      return 'UNOP {}'.format(self.op)
 
 class Binop(Node):
    def __init__(self, a, op, b):
@@ -92,27 +92,27 @@
       self.b = b
       self.op = op # Operation: '+', '-', '*', '/', 'mod'
    def __repr__(self):
-      return 'BINOP {0}'.format(self.op)
+      return 'BINOP {}'.format(self.op)
 
 class VariableUse(Node):
    def __init__(self, target):
       self.target = target
    def __repr__(self):
       nm = self.target.name if hasattr(self.target, 'name') else ''
-      return 'VAR USE {0}'.format(nm)
+      return 'VAR USE {}'.format(nm)
 
 class Literal(Node):
    def __init__(self, val):
       self.val = val
    def __repr__(self):
-      return 'LITERAL {0}'.format(self.val)
+      return 'LITERAL {}'.format(self.val)
 
 # Modules
 class Package(Node):
    def __init__(self, name):
       self.name = name
    def __repr__(self):
-      return 'PACKAGE {0}'.format(self.name)
+      return 'PACKAGE {}'.format(self.name)
 
 # Statements
 class CompoundStatement(Node):