Hi Pierrick, thanks for the report. would you be kind enough to fill a bug report against this issue? ----- Mail d'origine ----- De: Brunet Pierrick <pierrick.brunet@xxxxxxxxxxxxxxxxxxx> À: pythran@xxxxxxxxxxxxx Envoyé: Sun, 24 Mar 2013 19:14:44 +0100 (CET) Objet: [pythran] aliasing Hey, I just find a bug in aliasing (or maybe in ArgumentEffect). I am not good enought to solve the problem so I report it. just with this simple code : 1 #pythran export foo() 2 def foo(): 3 try: 4 a = 1 5 except: 6 a += a 7 return a It looks to have an issue on the augAssign but I don't understand why. If someone can help me it is great. Thanks,