Clase CalculadoraHija mejorada y reduccion de codigo

calcoohija.py

+#!/usr/bin/python3
+# -*- coding:utf-8 -*-
+
+import sys
+import calc
+import calcoo
+
+
+class CalculadoraHija(calcoo.Calculadora):
+
+    def __init__(self):
+        super().__init__()
+        self.operations["multiplica"] = self.multiply
+        self.operations["divide"] = self.division
+
+    def multiply(self, a, b):
+        return a * b
+
+    def division(self, a, b):
+        try:
+            return a / b
+        except ZeroDivisionError:
+            sys.exit("Division by zero is not allowed")
+
+
+if __name__ == "__main__":
+    op1 = calc.to_number(sys.argv[1])
+    operation = sys.argv[2]
+    op2 = calc.to_number(sys.argv[3])
+    calculator = CalculadoraHija()
+    print(calcoo.do_operation(calculator, operation, op1, op2))