From 2a0b98a318fb324c1e38c5b05977415889defa3c Mon Sep 17 00:00:00 2001
From: RASCHELLA Bastien <raschella.b@example.com>
Date: Mon, 2 Mar 2026 14:20:01 +0100
Subject: [PATCH] modif rapide

---
 expression.py | 25 +++++++++++++++----------
 1 file changed, 15 insertions(+), 10 deletions(-)

diff --git a/expression.py b/expression.py
index d354d3d..9880d91 100644
--- a/expression.py
+++ b/expression.py
@@ -8,21 +8,25 @@ class Expression:
         self.gauche = gauche
         self.droit = droit
     
+    def est_nombre(self):
+        return self.gauche is None and self.droit is None
+    
     def evalue(self):
         "renvoie la valeur de l'expression"
-        if self.gauche == None and self.droit == None:
-            return self.racine
-        if self.racine == '*':
+        
+        if self.est_nombre():
+            return float(self.racine)
+        
+        elif self.racine == '*':
             return self.gauche.evalue() * self.droit.evalue()
-        if self.racine == '+':
+        elif self.racine == '+':
             return self.gauche.evalue() + self.droit.evalue()
-        if self.racine == '-':
+        elif self.racine == '-':
             return self.gauche.evalue() - self.droit.evalue()
-        if self.racine == '/':
+        elif self.racine == '/':
             return self.gauche.evalue() / self.droit.evalue()
-        
-    def racine_carre(self):
-        return math.sqrt(self.racine)
+        else:
+            raise ValueError("symbole inconnue")
         
     def __str__(self):
         "affiche l'expression"
@@ -47,7 +51,7 @@ def npi2tree(lst):
             p.empiler(exp)
         else :
             if elem != None:
-                p.empiler(Expression(int(elem), None, None))
+                p.empiler(Expression(elem, None, None))
     return p.sommet()
     
     
@@ -60,4 +64,5 @@ if __name__ == "__main__":
     print(exp.evalue())
     print(exp)
     e = npi2tree([-6, 4, 3, "+", "-"])
+    print(e)
     print(e.evalue())
\ No newline at end of file