Ajout de subtraction dans la classe complexe

Chapter_7/complexe.py

@@ -16,6 +16,9 @@ class complexe:
         else:
             return "{}{}i".format(self.real,self.imag)
 
+    def __neg__(self):
+        return complexe(-self.real,-self.imag)
+
     def __add__(self,other):
         if isinstance(other,complexe):
             return complexe(self.real + other.real, self.imag+other.imag)
@@ -28,6 +31,18 @@ class complexe:
     def __radd__(self,other):
         return self + other
 
+    def __sub__(self,other):
+        if isinstance(other,complexe):
+            return complexe(self.real - other.real, self.imag-other.imag)
+        else:
+            try:
+                return complexe(self.real-other, self.imag)
+            except:
+                return NotImplemented
+
+    def __rsub__(self,other):
+        return - self + other
+
     def __mul__(self,other):
         if isinstance(other,complexe):
             return complexe(self.real*other.real - self.imag * other.imag,
@@ -97,6 +112,5 @@ class complexe:
         else:
             return (abs(self),math.atan(self.imag/self.real))
 
-
 if __name__ == "__main__":
     print("For explanation on all the 'NotImplemented in the code, please check-out not_implemented_expl.py")