Enhance calculator with history tracking and input updates

Added functionality to view calculation history and updated input handling to use float instead of int for calculations. Improved error messages and added history tracking for operations.

Author: Tech4Aditya

math/Simple-Calculator/Simple-Calculator.py

@@ -1,10 +1,8 @@
 import math
 
-from matplotlib.pylab import angle
-
 class Calculator:
     def __init__(self):
-        pass 
+        self.history = []
 
     def start_calculation(self):
         print("--------Menu---------")
@@ -23,11 +21,13 @@ def start_calculation(self):
         print('13. Cotangent')
         print('14. Secant')
         print('15. Cosecant')
-        print('16. Exit')
+        print('16. View History')
+        print('17. Exit')
 
         while True:
             try:
-                user_input = int(input('Enter your choice to calculate(1-16): '))
+                user_input = int(input('Enter your choice to calculate(1-17): '))
+
                 if user_input == 1:
                     self.addition()
                 elif user_input == 2:
@@ -59,13 +59,15 @@ def start_calculation(self):
                 elif user_input == 15:
                     self.cosecant()
                 elif user_input == 16:
+                    self.show_history()
+                elif user_input == 17:
                     print('Goodbye! Have a good day.')
                     break
                 else:
                     print('Wrong Choice.')
 
             except ValueError:
-                print('please enter correct option.')
+                print('Please enter correct option.')
             except ZeroDivisionError:
                 print('Zero cannot be divided by zero.')
             except Exception as e:
@@ -76,108 +78,137 @@ def clean(self, x, eps=1e-10):
             return 0.0
         return x
 
+    def add_history(self, operation):
+        self.history.append(operation)
+
+    def show_history(self):
+        if not self.history:
+            print("No calculations yet.")
+        else:
+            print("\n------ Calculation History ------")
+            for item in self.history:
+                print(item)
 
     def addition(self):
-        a = int(input('enter first value: '))
-        b = int(input('enter second value: '))
+        a = float(input('Enter first value: '))
+        b = float(input('Enter second value: '))
         add = a + b
         print(f'The Result is: {add}')
-    
+        self.add_history(f"{a} + {b} = {add}")
+
     def substraction(self):
-        a = int(input('enter first value: '))
-        b = int(input('enter second value: '))
+        a = float(input('Enter first value: '))
+        b = float(input('Enter second value: '))
         minus = a - b
         print(f'The Result is: {minus}')
+        self.add_history(f"{a} - {b} = {minus}")
 
-    def division(self):
-        a = int(input('enter first value: '))
-        b = int(input('enter second value: '))
-        div = a / b
-        print(f'The Result is: {div}')
-    
     def multiplication(self):
-        a = int(input('enter first value: '))
-        b = int(input('enter second value: '))
+        a = float(input('Enter first value: '))
+        b = float(input('Enter second value: '))
         multiplication = a * b
         print(f'The Result is: {multiplication}')
+        self.add_history(f"{a} * {b} = {multiplication}")
+
+    def division(self):
+        a = float(input('Enter first value: '))
+        b = float(input('Enter second value: '))
+        div = a / b
+        print(f'The Result is: {div}')
+        self.add_history(f"{a} / {b} = {div}")
 
     def floor_division(self):
-        a = int(input('enter first value: '))
-        b = int(input('enter second value: '))
+        a = float(input('Enter first value: '))
+        b = float(input('Enter second value: '))
         floor = a // b
         print(f'The Result is: {floor}')
+        self.add_history(f"{a} // {b} = {floor}")
 
     def modulus(self):
-        a = int(input('enter first value: '))
-        b = int(input('enter second value: '))
+        a = float(input('Enter first value: '))
+        b = float(input('Enter second value: '))
         mod = a % b
         print(f'The Result is: {mod}')
+        self.add_history(f"{a} % {b} = {mod}")
 
     def power(self):
-        a = int(input('enter first value: '))
-        b = int(input('enter second value: '))
+        a = float(input('Enter first value: '))
+        b = float(input('Enter second value: '))
         power = a ** b
         print(f'The Result is: {power}')
+        self.add_history(f"{a} ** {b} = {power}")
 
     def factorial(self):
         a = int(input("Enter the number: "))
         fact = 1
-        for i in range(1,a+1):
-            fact = fact * i
+        for i in range(1, a + 1):
+            fact *= i
         print(f"Factorial is: {fact}")
-    
+        self.add_history(f"{a}! = {fact}")
+
     def sqrt(self):
-        num = int(input("Enter the number: "))
+        num = float(input("Enter the number: "))
         sqrt = num ** 0.5
-        print(f"Square root of {num} : {sqrt}")
+        print(f"Square root of {num}: {sqrt}")
+        self.add_history(f"sqrt({num}) = {sqrt}")
 
     def sine(self):
         angle = float(input("Enter the angle in degrees: "))
         rads = math.radians(angle)
         sin_val = self.clean(math.sin(rads))
         print(f"Sine of {angle} degrees is: {sin_val}")
+        self.add_history(f"sin({angle}) = {sin_val}")
 
     def cosine(self):
         angle = float(input("Enter the angle in degrees: "))
         rads = math.radians(angle)
         cos_val = self.clean(math.cos(rads))
         print(f"Cosine of {angle} degrees is: {cos_val}")
+        self.add_history(f"cos({angle}) = {cos_val}")
 
     def tangent(self):
         angle = float(input("Enter the angle in degrees: "))
         rads = math.radians(angle)
         tan_val = self.clean(math.tan(rads))
         print(f"Tangent of {angle} degrees is: {tan_val}")
+        self.add_history(f"tan({angle}) = {tan_val}")
 
     def cotangent(self):
         angle = float(input("Enter the angle in degrees: "))
         rads = math.radians(angle)
         tan_val = self.clean(math.tan(rads))
+
         if tan_val != 0:
             cot_val = 1 / tan_val
             print(f"Cotangent of {angle} degrees is: {cot_val}")
+            self.add_history(f"cot({angle}) = {cot_val}")
         else:
-            print(f"Cotangent of {angle} degrees is undefined.")
+            print("Cotangent is undefined.")
 
     def secant(self):
         angle = float(input("Enter the angle in degrees: "))
         rads = math.radians(angle)
         cos_val = self.clean(math.cos(rads))
+
         if cos_val != 0:
             sec_val = 1 / cos_val
             print(f"Secant of {angle} degrees is: {sec_val}")
+            self.add_history(f"sec({angle}) = {sec_val}")
         else:
-            print(f"Secant of {angle} degrees is undefined.")
+            print("Secant is undefined.")
 
     def cosecant(self):
         angle = float(input("Enter the angle in degrees: "))
         rads = math.radians(angle)
         sin_val = self.clean(math.sin(rads))
+
         if sin_val != 0:
             csc_val = 1 / sin_val
             print(f"Cosecant of {angle} degrees is: {csc_val}")
+            self.add_history(f"csc({angle}) = {csc_val}")
         else:
-            print(f"Cosecant of {angle} degrees is undefined.")
+            print("Cosecant is undefined.")
+
 
 cal = Calculator()
 cal.start_calculation()