--- a/python/pyyacc.py	Sat May 04 18:50:36 2013 +0200
+++ b/python/pyyacc.py	Thu May 09 17:35:19 2013 +0200
@@ -13,6 +13,21 @@
    @property
    def Symbols(self):
       return self.nonterminals + self.terminals
+   def calcFollow(self):
+      follow = {}
+      for nt in self.nonterminals:
+         follow[nt] = set()
+      while True:
+         change = False
+         # 1.
+         for p in self.productions:
+            pass
+         if not change:
+            break
+      return follow
+   def calcFirst(self):
+      first = {}
+      return first
 
 class Production:
    def __init__(self, name, symbols):