Amazing-Python-Scripts

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import tkinter as tk
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root = tk.Tk()  # Main box window
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root.title("Standard Calculator")  # Title shown at the title bar
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root.resizable(0, 0)  # disabling the resizeing of the window
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# Creating an entry field:
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e = tk.Entry(root,
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             width=35,
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             bg='#f0ffff',
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             fg='black',
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             borderwidth=5,
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             justify='right',
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             font='Calibri 15')
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e.grid(row=0, column=0, columnspan=3, padx=12, pady=12)
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def buttonClick(num):  # function for clicking
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    temp = e.get(
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    )  # temporary varibale to store the current input in the screen
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    e.delete(0, tk.END)  # clearing the screen from index 0 to END
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    e.insert(0, temp + num)  # inserting the incoming number input
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def buttonClear():  # function for clearing
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    e.delete(0, tk.END)
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def buttonGet(
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        oper
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):  # function for storing the first input and printing '+, -, /, *'
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    global num1, math  # global variable num1 and math to use in function buttonEqual()
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    num1 = e.get()  # getting first number
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    math = oper  # oper varaible is the type of operation being performed
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    e.insert(tk.END, math)
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    try:
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        num1 = float(num1)  # converting the number to float type
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    except ValueError:  # in case there is a character other than numerals, clear the screen
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        buttonClear()
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def buttonEqual():  # function for printing the sum
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    inp = e.get()  # getting the inserted input
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    num2 = float(inp[inp.index(math) + 1:])  # getting the second number
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    e.delete(0, tk.END)
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    if math == '+':  # Addition
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        e.insert(0, str(num1 + num2))
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    elif math == '-':  # Subtraction
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        e.insert(0, str(num1 - num2))
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    elif math == 'x':  # Multiplication
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        e.insert(0, str(num1 * num2))
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    elif math == '/':  # Division
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        try:
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            e.insert(0, str(num1 / num2))
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        except ZeroDivisionError:
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            # in case there is a zero in the denominator, answer is undefined
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            e.insert(0, 'Undefined')
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# Defining Buttons:
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b1 = tk.Button(root,
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               text='1',
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               padx=40,
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               pady=10,
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               command=lambda: buttonClick('1'),
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               font='Calibri 12')
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b2 = tk.Button(root,
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               text='2',
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               padx=40,
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               pady=10,
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               command=lambda: buttonClick('2'),
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               font='Calibri 12')
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b3 = tk.Button(root,
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               text='3',
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               padx=40,
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               pady=10,
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               command=lambda: buttonClick('3'),
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               font='Calibri 12')
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b4 = tk.Button(root,
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               text='4',
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               padx=40,
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               pady=10,
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               command=lambda: buttonClick('4'),
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               font='Calibri 12')
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b5 = tk.Button(root,
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               text='5',
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               padx=40,
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               pady=10,
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               command=lambda: buttonClick('5'),
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               font='Calibri 12')
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b6 = tk.Button(root,
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               text='6',
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               padx=40,
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               pady=10,
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               command=lambda: buttonClick('6'),
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               font='Calibri 12')
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b7 = tk.Button(root,
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               text='7',
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               padx=40,
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               pady=10,
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               command=lambda: buttonClick('7'),
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               font='Calibri 12')
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b8 = tk.Button(root,
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               text='8',
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               padx=40,
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               pady=10,
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               command=lambda: buttonClick('8'),
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               font='Calibri 12')
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b9 = tk.Button(root,
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               text='9',
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               padx=40,
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               pady=10,
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               command=lambda: buttonClick('9'),
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               font='Calibri 12')
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b0 = tk.Button(root,
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               text='0',
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               padx=40,
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               pady=10,
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               command=lambda: buttonClick('0'),
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               font='Calibri 12')
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bdot = tk.Button(root,
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                 text='.',
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                 padx=41,
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                 pady=10,
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                 command=lambda: buttonClick('.'),
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                 font='Calibri 12')
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badd = tk.Button(root,
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                 text='+',
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                 padx=29,
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                 pady=10,
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                 command=lambda: buttonGet('+'),
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                 font='Calibri 12')
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bsub = tk.Button(root,
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                 text='-',
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                 padx=30,
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                 pady=10,
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                 command=lambda: buttonGet('-'),
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                 font='Calibri 12')
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bmul = tk.Button(root,
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                 text='x',
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                 padx=30,
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                 pady=10,
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                 command=lambda: buttonGet('x'),
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                 font='Calibri 12')
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bdiv = tk.Button(root,
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                 text='/',
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                 padx=30.5,
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                 pady=10,
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                 command=lambda: buttonGet('/'),
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                 font='Calibri 12')
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bclear = tk.Button(root,
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                   text='AC',
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                   padx=20,
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                   pady=10,
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                   command=buttonClear,
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                   font='Calibri 12')
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bequal = tk.Button(root,
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                   text='=',
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                   padx=39,
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                   pady=10,
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                   command=buttonEqual,
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                   font='Calibri 12')
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# Putting the buttons on the screen:
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b1.grid(row=3, column=0)
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b2.grid(row=3, column=1)
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b3.grid(row=3, column=2)
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badd.grid(row=3, column=3)
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b4.grid(row=2, column=0)
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b5.grid(row=2, column=1)
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b6.grid(row=2, column=2)
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bmul.grid(row=2, column=3)
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b7.grid(row=1, column=0)
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b8.grid(row=1, column=1)
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b9.grid(row=1, column=2)
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bdiv.grid(row=1, column=3)
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b0.grid(row=4, column=0)
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bdot.grid(row=4, column=1)
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bequal.grid(row=4, column=2)
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bsub.grid(row=4, column=3)
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bclear.grid(row=0, column=3)
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# Looping the window:
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root.mainloop()
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