aggiunge esercizio 42

lab40.py

@@ -0,0 +1,36 @@
+class WeekDayError(Exception):
+    pass
+
+
+class Weeker:
+    __GIORNI = ['lun', 'mar', 'mer', 'gio', 'ven', 'sab', 'dom']
+
+    def __init__(self, day):
+        if day not in Weeker.__GIORNI:
+            raise WeekDayError("Giorno non valido: " + day)
+        self.__day_index = Weeker.__GIORNI.index(day)
+
+    def __str__(self):
+        return Weeker.__GIORNI[self.__day_index].capitalize()
+
+    def add_days(self, n):
+        self.__day_index = (self.__day_index + n) % 7
+
+    def subtract_days(self, n):
+        self.__day_index = (self.__day_index - n) % 7
+
+
+# --- TEST ---
+try:
+    weekday = Weeker('lun')
+    print(weekday)
+
+    weekday.add_days(15)
+    print(weekday)
+
+    weekday.subtract_days(23)
+    print(weekday)
+
+    weekday = Weeker('lunedì')
+except WeekDayError:
+    print("Mi dispiace, non posso soddisfare la sua richiesta.")

lab41.py

@@ -0,0 +1,28 @@
+import math
+
+
+class Point:
+    def __init__(self, x, y):
+        self.__x = float(x)
+        self.__y = float(y)
+
+    def getx(self):
+        return self.__x
+
+    def gety(self):
+        return self.__y
+
+    def distance_from_xy(self, x, y):
+        return math.hypot(self.__x - x, self.__y - y)
+
+    def distance_from_point(self, point):
+        return self.distance_from_xy(point.getx(), point.gety())
+
+
+# --- TEST ---
+point1 = Point(0, 0)
+point2 = Point(1, 1)
+
+print(point1.distance_from_point(point2))
+
+print(point2.distance_from_xy(2, 0))

lab42.py

@@ -0,0 +1,35 @@
+import math
+
+class Point:
+
+    def __init__(self, x, y):
+        self.__x = float(x)
+        self.__y = float(y)
+
+    def getx(self):
+        return self.__x
+
+    def gety(self):
+        return self.__y
+
+    def distance_from_xy(self, x, y):
+        return math.hypot(self.__x - x, self.__y - y)
+
+    def distance_from_point(self, point):
+        return self.distance_from_xy(point.getx(), point.gety())
+
+
+class Triangle:
+
+    def __init__(self, vertice1, vertice2, vertice3):
+        self.__vertici = [vertice1, vertice2, vertice3]
+
+    def perimeter(self):
+        v = self.__vertici
+        lato1 = v[0].distance_from_point(v[1])
+        lato2 = v[1].distance_from_point(v[2])
+        lato3 = v[2].distance_from_point(v[0])
+        return lato1 + lato2 + lato3
+
+triangle = Triangle(Point(0, 0), Point(1, 0), Point(0, 1))
+print(triangle.perimeter())