Scientific Calculator

calculator.py

@@ -7,6 +7,32 @@ def add(self, x, y):
         return x + y
 
     def sub(self, x, y):
-        return 0
+        return x - y
+
+    def mult(self, x, y):
+        return x * y
+
+    def div(self, x, y):
+        if y == 0:
+            print(Err)
+
+        return x / y
+
+    def sq(self, x):
+        return x**2
+
+    def sqrt(self, x):
+        return x**(1/2)
+
+    def varexp(self, x, y):
+        return x**y
+
+    def inverse(self, x):
+        return 1 / x
+
+    def invert_sign(self, x):
+        return x * -1
+
+
 
 # add lots more methods to this calculator class.

dev.py

@@ -0,0 +1,17 @@
+import math
+
+
+class Calculator:
+
+    def __init__(self):
+        pass
+
+    def add(self, x, y):
+        return x + y
+
+    def sub(self, x, y):
+        return 0
+
+
+# add lots more methods to this calculator class.
+

functionslafferty.py

@@ -0,0 +1,69 @@
+import math
+
+
+def calc(term):
+    """
+    The term will be the input from the calculator.
+    Output will be result of computed term.
+    This is where the functions will actually calculate.
+    """
+
+    term = term.replace(' ','')     # gets rid of spaces
+    term = term.replace('^','**')   # to power of sign recognized as **
+    term = term.replace('=','')
+    term = term.replace('?','')
+    term = term.replace('%','/100') # for percentages
+    term = term.replace('rad','radians')
+    term = term.replace('mod','%')  # for modula
+
+    functions = ['sin', 'cos', 'tan', 'cosh', 'sinh', 'tanh', 'sqrt', 'pi', 'radians', 'e', 'square', 'exp','factorial']
+
+    term = term.lower()     # convert to lowercase for case sensitive
+
+    for function in functions:
+        if function in term:
+            usemath = 'math.' + function   # will source the function and combine with math. to create math function
+            term = term.replace(function , usemath)
+
+    try:
+        term = eval(term)
+
+    except ZeroDivisionError:       # builds in zero division error
+        print("Sorry it is not possible to divide by zero! Try again my friend.")
+    except NameError:
+        print("Sorry that input is not valid! Try again my friend.")
+    except AttributeError:
+        print("Incorrect usage method! Try again my friend.")
+    return(term)
+
+def result(term):  # This passes the argument 'term' to the function 'calc' and prints the result
+
+    print("\n" + str(calc(term)))
+
+
+def intro():
+    """This is for handling the user data and printing the introduction and input
+    """
+
+    while True:
+
+        print("\n BOO!! Welcome to the Halloween Scientific Calculator!! Input in any format, enter 'quit' to escape!!")
+
+        answer = input("\n What do you want to know? ")
+
+        if answer == None:
+
+            print("Display: " + 0)
+
+        display = Tk()
+        root = Tk()
+        root.geometry("312x324")
+        root.resizable(0,0)
+        root.title("CALCULATOR")
+
+
+        if answer == 'quit':
+            break
+        result(answer)
+
+intro()

main-app-dev.py

@@ -0,0 +1,180 @@
+from calculator import Calculator
+
+
+def getTwoNumbers():
+    a = float(input("First Number? "))
+    b = float(input("Second Number? "))
+    return a, b
+
+
+def getOneNumber():     # get one number instead
+    a = float(input("Number? "))
+    return a
+
+
+def displayResult(temp_display: float):
+    print("\nDISPLAY:\n")
+    print(temp_display)
+
+
+def performCalcLoop(calc,temp_display):  # KB - removed none assignment to temp_display
+
+
+        print('\nBOO! Happy Halloween ;) \n\n "Welcome to your Scientific Calculator."')
+        print("\nHere's a list of choices:")
+        print('~' * 70)
+        print("1 : Addition  \t\t               12 : ")
+        print("2 : Subtraction \t               13 : ")
+        print("3 : Multiplication\t               14 : ")
+        print("4 : Division  \t\t               15 : ")
+        print("5 : Square     \t                   16 : ")
+        print("6 : Square Root\t                   17 : ")
+        print("7 : Variable Exponentiation \t   18 : ")
+        print("8 : Inverse of Display  \t       19 : ")
+        print("9 : Invert Sign (+/-)\t           20 : Quit")
+        print("10 : \t                           21 : Clear")
+        print("11 :  \t\t                       22 : ")
+        print('~' * 70)
+        temp_display = 0
+        print("DISPLAY:")
+        print(temp_display)
+
+        while True:
+            while temp_display == 0:
+
+                try:
+                    choice = input("\nEnter number to choose your operation: \n")
+                except:
+                    print("Please enter a valid number.")
+
+                if choice == '20':
+                    print("Thanks for stopping by, have a great day.")
+                    break
+
+                elif choice == '1':
+                    a, b = getTwoNumbers()
+                    temp_display = calc.add(a, b)
+                    displayResult(temp_display)
+
+                elif choice == '2':
+                    a, b = getTwoNumbers()
+                    temp_display = calc.sub(a, b)
+                    displayResult(temp_display)
+
+                elif choice == '3':
+                    a, b = getTwoNumbers()
+                    temp_display = calc.mult(a, b)
+                    displayResult(temp_display)
+
+                elif choice == '4':
+                    a, b = getTwoNumbers()
+                    if b == 0:
+                        print("\nDISPLAY:\nErr")
+                    else:
+                        temp_display = calc.div(a, b)
+                        displayResult(temp_display)
+
+                elif choice == '5':
+                    a = getOneNumber()
+                    temp_display = calc.sq(a)
+                    displayResult(temp_display)
+
+                elif choice == '6':
+                    a = getOneNumber()
+                    temp_display = calc.sqrt(a)
+                    displayResult(temp_display)
+
+                elif choice == '7':
+                    a, b = getTwoNumbers()
+                    temp_display = calc.varexp(a, b)
+                    displayResult(temp_display)
+
+                elif choice == '8':
+                    a = getOneNumber()
+                    temp_display = calc.inverse(a)
+                    displayResult(temp_display)
+
+                elif choice == '9':
+                    a = getOneNumber()
+                    temp_display = calc.invert_sign(a)
+                    displayResult(temp_display)
+
+                #elif choice == '21':
+                    #displayResult(temp_display)
+
+                else:
+                    print("That is not a valid input.")
+                    displayResult(temp_display)
+
+            while temp_display != 0:
+                try:
+
+                    choice = input("\nEnter number to choose your operation: \n")
+                except:
+                    print("Please enter a valid number.")
+
+                if choice == '20':
+                    print("Thanks for stopping by, have a great day.")
+                    break  # user types q to quit calulator.
+
+                elif choice == '1':
+                    b = getOneNumber()
+                    temp_display = calc.add(temp_display, b)
+                    displayResult(temp_display)
+
+                elif choice == '2':
+                    b = getOneNumber()
+                    temp_display = calc.sub(temp_display, b)
+                    displayResult(temp_display)
+
+                elif choice == '3':
+                    b = getOneNumber()
+                    temp_display = calc.mult(temp_display, b)
+                    displayResult(temp_display)
+
+                elif choice == '4':
+                    b = getOneNumber()
+                    if b == 0:
+                        print("\nDISPLAY:\nErr")
+                    else:
+                        temp_display = calc.div(temp_display, b)
+                        displayResult(temp_display)
+
+                elif choice == '5':
+                    temp_display = calc.sq(temp_display)
+                    displayResult(temp_display)
+
+                elif choice == '6':
+                    temp_display = calc.sqrt(temp_display)
+                    displayResult(temp_display)
+
+                elif choice == '7':
+                    b = getTwoNumbers()
+                    temp_display = calc.varexp(temp_display, b)
+                    displayResult(temp_display)
+
+                elif choice == '8':
+                    temp_display = calc.inverse(temp_display)
+                    displayResult(temp_display)
+
+                elif choice == '9':
+                    temp_display = calc.invert_sign(temp_display)
+                    displayResult(temp_display)
+
+                elif choice == '21':
+                    temp_display = 0
+                    displayResult(temp_display)
+
+                else:
+                    print("That is not a valid input.")
+                    displayResult(temp_display)
+
+# main start
+def main():
+    calc = Calculator()
+    performCalcLoop(calc, 0) #KB - passed second input parameter 0
+    print("Done Calculating.")
+
+
+if __name__ == '__main__':
+    main()

main-app.py

@@ -1,4 +1,5 @@
 from calculator import Calculator
+import math
 
 
 def getTwoNumbers():