├── README.md
└── source_code
    └── calculator.py


/README.md:
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1 | # Python-Calculator
2 | A calculator program made with python language
3 | 


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/source_code/calculator.py:
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  1 | from tkinter import *
  2 | 
  3 | def button_press(num):
  4 | 
  5 |     global equation_text
  6 | 
  7 |     equation_text = equation_text + str(num)
  8 | 
  9 |     equation_label.set(equation_text)
 10 | 
 11 | def equals():
 12 | 
 13 |     global equation_text
 14 | 
 15 |     try:
 16 | 
 17 |         total = str(eval(equation_text))
 18 | 
 19 |         equation_label.set(total)
 20 | 
 21 |         equation_text = total
 22 | 
 23 |     except SyntaxError:
 24 | 
 25 |         equation_label.set("syntax error")
 26 | 
 27 |         equation_text = ""
 28 | 
 29 |     except ZeroDivisionError:
 30 | 
 31 |         equation_label.set("arithmetic error")
 32 | 
 33 |         equation_text = ""
 34 | 
 35 | def clear():
 36 | 
 37 |     global equation_text
 38 | 
 39 |     equation_label.set("")
 40 | 
 41 |     equation_text = ""
 42 | 
 43 | 
 44 | window = Tk()
 45 | window.title("Calculator program")
 46 | window.geometry("500x500")
 47 | 
 48 | equation_text = ""
 49 | 
 50 | equation_label = StringVar()
 51 | 
 52 | label = Label(window, textvariable=equation_label, font=('consolas',20), bg="white", width=24, height=2)
 53 | label.pack()
 54 | 
 55 | frame = Frame(window)
 56 | frame.pack()
 57 | 
 58 | button1 = Button(frame, text=1, height=4, width=9, font=35,
 59 |                  command=lambda: button_press(1))
 60 | button1.grid(row=0, column=0)
 61 | 
 62 | button2 = Button(frame, text=2, height=4, width=9, font=35,
 63 |                  command=lambda: button_press(2))
 64 | button2.grid(row=0, column=1)
 65 | 
 66 | button3 = Button(frame, text=3, height=4, width=9, font=35,
 67 |                  command=lambda: button_press(3))
 68 | button3.grid(row=0, column=2)
 69 | 
 70 | button4 = Button(frame, text=4, height=4, width=9, font=35,
 71 |                  command=lambda: button_press(4))
 72 | button4.grid(row=1, column=0)
 73 | 
 74 | button5 = Button(frame, text=5, height=4, width=9, font=35,
 75 |                  command=lambda: button_press(5))
 76 | button5.grid(row=1, column=1)
 77 | 
 78 | button6 = Button(frame, text=6, height=4, width=9, font=35,
 79 |                  command=lambda: button_press(6))
 80 | button6.grid(row=1, column=2)
 81 | 
 82 | button7 = Button(frame, text=7, height=4, width=9, font=35,
 83 |                  command=lambda: button_press(7))
 84 | button7.grid(row=2, column=0)
 85 | 
 86 | button8 = Button(frame, text=8, height=4, width=9, font=35,
 87 |                  command=lambda: button_press(8))
 88 | button8.grid(row=2, column=1)
 89 | 
 90 | button9 = Button(frame, text=9, height=4, width=9, font=35,
 91 |                  command=lambda: button_press(9))
 92 | button9.grid(row=2, column=2)
 93 | 
 94 | button0 = Button(frame, text=0, height=4, width=9, font=35,
 95 |                  command=lambda: button_press(0))
 96 | button0.grid(row=3, column=0)
 97 | 
 98 | plus = Button(frame, text='+', height=4, width=9, font=35,
 99 |                  command=lambda: button_press('+'))
100 | plus.grid(row=0, column=3)
101 | 
102 | minus = Button(frame, text='-', height=4, width=9, font=35,
103 |                  command=lambda: button_press('-'))
104 | minus.grid(row=1, column=3)
105 | 
106 | multiply = Button(frame, text='*', height=4, width=9, font=35,
107 |                  command=lambda: button_press('*'))
108 | multiply.grid(row=2, column=3)
109 | 
110 | divide = Button(frame, text='/', height=4, width=9, font=35,
111 |                  command=lambda: button_press('/'))
112 | divide.grid(row=3, column=3)
113 | 
114 | equal = Button(frame, text='=', height=4, width=9, font=35,
115 |                  command=equals)
116 | equal.grid(row=3, column=2)
117 | 
118 | decimal = Button(frame, text='.', height=4, width=9, font=35,
119 |                  command=lambda: button_press('.'))
120 | decimal.grid(row=3, column=1)
121 | 
122 | clear = Button(window, text='clear', height=4, width=12, font=35,
123 |                  command=clear)
124 | clear.pack()
125 | 
126 | window.mainloop()
127 | 


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