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Make Python Turtle Calculator With Code

Make Python Turtle Calculator With Code

Want to make a calculator in python using turtle library then you are at the right place today in this tutorial I will show you how to make python turtle calculator with code so read this article till the end.

Turtle is a GUI library for python. You can draw anything with this library, but we will use this library today to make a calculator in python.

The calculator will be able to perform basic arithmetic operations like addition, multiplication, subtraction and division. Now let’s see how to do this in code.

Python Turtle Calculator Code


import turtle

#Answers List.
Answ_List = []

#Calculator Screen.
SIZE_X=500
SIZE_Y=500  
turtle.setup(SIZE_X, SIZE_Y)
turtle.tracer(1,0)
t = turtle.Turtle()
tDel = t.clone()
t.hideturtle()
tDel.hideturtle()
t.left(90)

############################################################################################

#Drawing & Defining GUI Buttons.

#btn0
t.penup()
t.goto(-240,-240)
t.pendown()
t.goto(-240,-200)
t.goto(-177.5,-200)
t.goto(-177.5,-240)
t.goto(-240,-240)
t.penup()
t.goto(-220,-245)
t.write("0", font=('Courier', 30, 'bold'))

#btn1
t.penup()
t.goto(-240,-190)
t.pendown()
t.goto(-240,-150)
t.goto(-177.5,-150)
t.goto(-177.5,-190)
t.goto(-240,-190)
t.penup()
t.goto(-220,-195)
t.write("1", font=('Courier', 30, 'bold'))

#btn4
t.penup()
t.goto(-240,-140)
t.pendown()
t.goto(-240,-100)
t.goto(-177.5,-100)
t.goto(-177.5,-140)
t.goto(-240,-140)
t.penup()
t.goto(-220,-145)
t.write("4", font=('Courier', 30, 'bold'))

#btn7
t.penup()
t.goto(-240,-90)
t.pendown()
t.goto(-240,-50)
t.goto(-177.5,-50)
t.goto(-177.5,-90)
t.goto(-240,-90)
t.penup()
t.goto(-220,-95)
t.write("7", font=('Courier', 30, 'bold'))

#btn=
t.penup()
t.goto(-167.5,-240)
t.pendown()
t.goto(-167.5,-200)
t.goto(-105,-200)
t.goto(-105,-240)
t.goto(-167.5,-240)
t.penup()
t.goto(-147.5,-245)
t.write("=", font=('Courier', 30, 'bold'))

#btn2
t.penup()
t.goto(-167.5,-190)
t.pendown()
t.goto(-167.5,-150)
t.goto(-105,-150)
t.goto(-105,-190)
t.goto(-167.5,-190)
t.penup()
t.goto(-147.5,-195)
t.write("2", font=('Courier', 30, 'bold'))

#btn5
t.penup()
t.goto(-167.5,-140)
t.pendown()
t.goto(-167.5,-100)
t.goto(-105,-100)
t.goto(-105,-140)
t.goto(-167.5,-140)
t.penup()
t.goto(-147.5,-145)
t.write("5", font=('Courier', 30, 'bold'))

#btn8
t.penup()
t.goto(-167.5,-90)
t.pendown()
t.goto(-167.5,-50)
t.goto(-105,-50)
t.goto(-105,-90)
t.goto(-167.5,-90)
t.penup()
t.goto(-147.5,-95)
t.write("8", font=('Courier', 30, 'bold'))

#btn+
t.penup()
t.goto(-95,-240)
t.pendown()
t.goto(-95,-200)
t.goto(-32.5,-200)
t.goto(-32.5,-240)
t.goto(-95,-240)
t.penup()
t.goto(-75,-245)
t.write("+", font=('Courier', 30, 'bold'))

#btn3
t.penup()
t.goto(-95,-190)
t.pendown()
t.goto(-95,-150)
t.goto(-32.5,-150)
t.goto(-32.5,-190)
t.goto(-95,-190)
t.penup()
t.goto(-75,-195)
t.write("3", font=('Courier', 30, 'bold'))

#btn6
t.penup()
t.goto(-95,-140)
t.pendown()
t.goto(-95,-100)
t.goto(-32.5,-100)
t.goto(-32.5,-140)
t.goto(-95,-140)
t.penup()
t.goto(-75,-145)
t.write("6", font=('Courier', 30, 'bold'))

#btn9
t.penup()
t.goto(-95,-90)
t.pendown()
t.goto(-95,-50)
t.goto(-32.5,-50)
t.goto(-32.5,-90)
t.goto(-95,-90)
t.penup()
t.goto(-75,-95)
t.write("9", font=('Courier', 30, 'bold'))

#btn-
t.penup()
t.goto(-22.5,-240)
t.pendown()
t.goto(-22.5,-200)
t.goto(40,-200)
t.goto(40,-240)
t.goto(-22.5,-240)
t.penup()
t.goto(-0.5,-245)
t.write("-", font=('Courier', 30, 'bold'))

#btn*
t.penup()
t.goto(-22.5,-190)
t.pendown()
t.goto(-22.5,-150)
t.goto(40,-150)
t.goto(40,-190)
t.goto(-22.5,-190)
t.penup()
t.goto(-2.5,-202.5)
t.write("*", font=('Courier', 35, 'bold'))

#btn/
t.penup()
t.goto(-22.5,-140)
t.pendown()
t.goto(-22.5,-100)
t.goto(40,-100)
t.goto(40,-140)
t.goto(-22.5,-140)
t.penup()
t.goto(-0.5,-140)
t.write("/", font=('Courier', 25, 'bold'))

#btn^
t.penup()
t.goto(-22.5,-90)
t.pendown()
t.goto(-22.5,-50)
t.goto(40,-50)
t.goto(40,-90)
t.goto(-22.5,-90)
t.penup()
t.goto(-0.5,-95)
t.write("^", font=('Courier', 30, 'bold'))

############################################################################################

#Calculator Answer Screen.
t.goto(-240,-40)
t.pendown()
t.goto(-240,240)
t.goto(40,240)
t.goto(40,-40)
t.goto(-240,-40)
t.penup()

#Calculator Answer Screen Delete.
def delete():
    tDel.penup()
    tDel.fillcolor("white")
    tDel.begin_fill()
    tDel.goto(-235,-35)
    tDel.goto(-235,235)
    tDel.goto(35,235)
    tDel.goto(35,-35)
    tDel.goto(-235,-35)
    tDel.end_fill()
                

#Calculator History.
t.penup()
t.goto(50,250)
t.pendown()
t.goto(50,-250)
t.penup()
t.goto(90,215)
t.write("History", font=('Courier', 20, 'bold'))
t.goto(250,210)
t.pendown()
t.goto(50,210)
t.penup()
t.goto(60,180)


#Clear Calculator History.
def btnclear():
    t.penup()
    t.goto(240,-230)
    t.pendown()
    t.goto(180,-230)
    t.goto(180,-210)
    t.goto(240,-210)
    t.goto(240,-230)
    t.penup()
    t.goto(185,-230)
    t.write("Clear", font=("Courier", 12, 'bold'))
    t.goto(60,180)

def clear(x,y):
    if x > 180 and x < 240 and y > -230 and y < -210:
        t.fillcolor("white")
        t.begin_fill()
        t.goto(55,210)
        t.goto(250,210)
        t.goto(250,-250)
        t.goto(55,-250)
        t.goto(55,210)
        t.end_fill()
        t.goto(50,210)
        t.pendown()
        t.goto(250,210)
        t.penup()
        btnclear()
        print("\nCleared History! Press Enter To Continue")


turtle.onscreenclick(clear, 1)
turtle.listen
btnclear()        

#Defining The Calculator Operations And Their Functions.
def add(x,y):
    return x + y

def subtract(x,y):
    return x - y

def multiply(x,y):
    return x * y

def divide(x,y):
    return x / y

def power(x,y):
    return x ** y



#Welcome & Instructions Text.
print("Welcome To George's Helpful Calculator!\nThe Operations That Are Available Are:")
print("1.Addition(+)\n2.Subtraction(-)\n3.Multiplication(*)\n4.Division(/)\n5.Exponent(^)")
input("\nPress Enter to Start")



#Defining The Calculation Function, Asking For The User's Input & Error Handling.
def calculate():
    try:
        delete()
        x = float(input("\nEnter Your First Number: "))
        tDel.penup()
        tDel.goto(-200,200)
        tDel.write(x, font=('Courier', 13, 'bold'))
        y = float(input("Enter Your Second Number: "))
        tDel.goto(-200,150)
        tDel.write(y, font=('Courier', 13, 'bold'))

        
    except ValueError:
        print("ERROR 'Integers Only'")
        calculate()
    else:
        try:            
            operation = input("Enter Your Operation Of Choice: ")
            tDel.goto(-200,175)
            tDel.write(operation, font=('Courier', 13, 'bold'))
            if operation in ('+', '-', '*', '/', '^'):

                if operation == '+':
                    Answ1 = add(x, y)
                    print("Answer:", x, "+", y, "=", Answ1)
                    tDel.goto(-200,125)
                    tDel.write("=", font=('Courier', 13, 'bold'))
                    tDel.goto(-200,100)
                    tDel.write(Answ1, font=('Courier', 13, 'bold'))
                    Answ_List.append(Answ1)
                    hlp()

                elif operation == '-':
                    Answ2 = subtract(x, y)
                    print("Answer:", x, "-", y, "=", Answ2)
                    tDel.goto(-200,125)
                    tDel.write("=", font=('Courier', 13, 'bold'))
                    tDel.goto(-200,100)
                    tDel.write(Answ2, font=('Courier', 13, 'bold'))
                    Answ_List.append(Answ2)
                    hlp()

                elif operation == '*':
                    Answ3 = multiply(x, y)
                    print("Answer:", x, "*", y, "=", Answ3)
                    tDel.goto(-200,125)
                    tDel.write("=", font=('Courier', 13, 'bold'))
                    tDel.goto(-200,100)
                    tDel.write(Answ3, font=('Courier', 13, 'bold'))
                    Answ_List.append(Answ3)
                    hlp()

                elif operation == '/':
                    Answ4 = divide(x, y)
                    print("Answer:", x, "/", y, "=", Answ4)
                    tDel.goto(-200,125)
                    tDel.write("=", font=('Courier', 13, 'bold'))
                    tDel.goto(-200,100)
                    tDel.write(Answ4, font=('Courier', 13, 'bold'))
                    Answ_List.append(Answ4)
                    hlp()

                elif operation == '^':
                    Answ5 = power(x, y)
                    print("Answer:", x, "^", y, "=", Answ5)
                    tDel.goto(-200,125)
                    tDel.write("=", font=('Courier', 13, 'bold'))
                    tDel.goto(-200,100)
                    tDel.write(Answ5, font=('Courier', 13, 'bold'))
                    Answ_List.append(Answ5)
                    hlp()

            else:
                print("ERROR 'Invalid Operation'")
                calculate()
        except ZeroDivisionError:
            print("ERROR 'Can Not Divide By Zero'")
            calculate()
        except OverflowError:
            print("ERROR 'The Number Is Too Big For The Computer To Handle'")
            calculate()
        else:
            rerun()


#Asking If The User Wants To Continue Or Stop Using The Calculator.    
def rerun():

    run_again = input("\nWould you like to calculate again?\nPlease Type Y for Yes or N for No: ")
      
    if run_again.upper() == "Y":
        calculate()

    elif run_again.upper() == "N":
        print("Good Luck!")
        quit()

    else:
        rerun()

#History List Print.
def hlp():
    for i in range(len(Answ_List)):
        ##print(Answ_List[i])
        t.write(Answ_List[i], font=('Courier', 20, 'bold'))
        Answ_List.clear()
        t.backward(25)
    
calculate()
t.mainloop()

Above is the code for the python turtle calculator. Copy it and paste it in a python file and run it on your computer or use an online python compiler.

After running the code below is the output you should get, it will open a new window like below

Python turtle calculator output

Now if you run it successfully and you tried clicking the numbers on the screen it won’t work. It is just a GUI you need to do all the operation in the command prompt or terminal. All the output and the history of your calculation will appear on the GUI. 

Summary

This was the tutorial on how to make a python turtle calculator. I hope you found this tutorial helpful and interesting. Do share it with your friends if they are interested.

Here are more python turtle guides that will interest you:

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Thank you for reading, have a nice day 🙂