From 4966caf68e8713c25d19465158fff6b3b678514d Mon Sep 17 00:00:00 2001
From: Eli <>
Date: Mon, 2 Feb 2026 11:25:19 +0100
Subject: [PATCH] Classe Expression

---
 expression.py | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/expression.py b/expression.py
index 381832f..d37b332 100644
--- a/expression.py
+++ b/expression.py
@@ -6,26 +6,24 @@ class Expression :
         self.gauche = gauche
         self.droit = droit
         
+        
     def evalue (self) :
         """Renvoie la valeur de l’expression."""
         if self.gauche is None and self.droit is None :
             return self.valeur
         
         if self.valeur == "+" :
-            return self.
+            return self.gauche.evalue() + self.droit.evalue()
         elif self.valeur == "*":
-            pass
-    
-    
-    
-    
-    
+            return self.gauche.evalue() * self.droit.evalue()
+
+
     def __str__ (self) :
         """Affiche l'expression"""
-        pass
-    
-    
-    
+        if self.gauche is None and self.droite is None :
+            return str(self.valeur)
+
+
 exp = Expression('*',
                  Expression(6, None, None),
                  Expression('+',
@@ -34,4 +32,8 @@ exp = Expression('*',
                             )
                  )
 
-exp.evalue()
\ No newline at end of file
+exp.evalue()
+
+
+
+def npi2tree (
\ No newline at end of file