python-tkinter-calculator-starter/Calc.py at main · smhitle/python-tkinter-calculator-starter · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
from tkinter import *

class CalculatorApp:
    def __init__(self, master):
        self.master = master
        self.master.title("Calculator")
        self.master.geometry('315x510')
        self.master.configure(background='grey')

        self.logic = CalculatorLogic()

        self._input = StringVar()

        self.create_widgets()

    def create_widgets(self):
        label = Label(self.master, font=('ariel', 20, 'bold'), text='Calculator', bg='grey', fg='black')
        label.grid(columnspan=4)

        self.display = Entry(self.master, font=('ariel', 20, 'bold'), textvariable=self._input, insertwidth=7, bd=5, bg="black", justify='right')
        self.display.grid(columnspan=4)

        self.create_buttons()

    def create_buttons(self):
        # Row 1
        b7 = Button(self.master, padx=16, pady=16, bd=4, fg="black", font=('ariel', 20, 'bold'), text="7", bg="grey", command=lambda: self.btn_click(7))
        b7.grid(row=2, column=0)

        b8 = Button(self.master, padx=16, pady=16, bd=4, fg="black", font=('ariel', 20, 'bold'), text="8", bg="grey", command=lambda: self.btn_click(8))
        b8.grid(row=2, column=1)

        b9 = Button(self.master, padx=16, pady=16, bd=4, fg="black", font=('ariel', 20, 'bold'), text="9", bg="grey", command=lambda: self.btn_click(9))
        b9.grid(row=2, column=2)

        Add = Button(self.master, padx=16, pady=16, bd=4, fg="black", font=('ariel', 20, 'bold'), text="+", bg="grey", command=lambda: self.btn_click("+"))
        Add.grid(row=2, column=3)

        # Row 2
        b4 = Button(self.master, padx=16, pady=16, bd=4, fg="black", font=('ariel', 20, 'bold'), text="4", bg="grey", command=lambda: self.btn_click(4))
        b4.grid(row=3, column=0)

        b5 = Button(self.master, padx=16, pady=16, bd=4, fg="black", font=('ariel', 20, 'bold'), text="5", bg="grey", command=lambda: self.btn_click(5))
        b5.grid(row=3, column=1)

        b6 = Button(self.master, padx=16, pady=16, bd=4, fg="black", font=('ariel', 20, 'bold'), text="6", bg="grey", command=lambda: self.btn_click(6))
        b6.grid(row=3, column=2)

        Sub = Button(self.master, padx=16, pady=16, bd=4, fg="black", font=('ariel', 20, 'bold'), text="-", bg="grey", command=lambda: self.btn_click("-"))
        Sub.grid(row=3, column=3)

        # Row 3
        b1 = Button(self.master, padx=16, pady=16, bd=4, fg="black", font=('ariel', 20, 'bold'), text="1", bg="grey", command=lambda: self.btn_click(1))
        b1.grid(row=4, column=0)

        b2 = Button(self.master, padx=16, pady=16, bd=4, fg="black", font=('ariel', 20, 'bold'), text="2", bg="grey", command=lambda: self.btn_click(2))
        b2.grid(row=4, column=1)

        b3 = Button(self.master, padx=16, pady=16, bd=4, fg="black", font=('ariel', 20, 'bold'), text="3", bg="grey", command=lambda: self.btn_click(3))
        b3.grid(row=4, column=2)

        mul = Button(self.master, padx=16, pady=16, bd=4, fg="black", font=('ariel', 20, 'bold'), text="*", bg="grey", command=lambda: self.btn_click("*"))
        mul.grid(row=4, column=3)

        # Row 4
        b0 = Button(self.master, padx=16, pady=16, bd=4, fg="black", font=('ariel', 20, 'bold'), text="0", bg="grey", command=lambda: self.btn_click(0))
        b0.grid(row=5, column=0)

        bc = Button(self.master, padx=16, pady=16, bd=4, fg="black", font=('ariel', 20, 'bold'), text="C", bg="grey", command=self.clear)
        bc.grid(row=5, column=1)

        Decimal = Button(self.master, padx=16, pady=16, bd=4, fg="black", font=('ariel', 20, 'bold'), text=".", bg="grey", command=lambda: self.btn_click("."))
        Decimal.grid(row=5, column=2)

        Div = Button(self.master, padx=16, pady=16, bd=4, fg="black", font=('ariel', 20, 'bold'), text="/", bg="grey", command=lambda: self.btn_click("/"))
        Div.grid(row=5, column=3)

        # activity 2: add operations like parenthesis, mod, exponents, and delete below
        # note that most other comments you see in this file will be for the challenge

        # Row 5
        bequal = Button(self.master, padx=16, pady=16, bd=4, width=16, fg="black", font=('ariel', 20, 'bold'), text="=", bg="grey", command=self.answer)
        bequal.grid(columnspan=4)


    def btn_click(self, num):
        result = self.logic.btn_click(num)
        self._input.set(result)

    def clear(self):
        result = self.logic.clear()
        self._input.set(result)

    def delete(self):
        result = self.logic.delete()
        self._input.set(result)

    def answer(self):
        result = self.logic.answer()
        self._input.set(result)


class CalculatorLogic:
    def __init__(self):
        self.operator = ""
        # add logic to keep track of what to do with saved answer for the challenge

    def btn_click(self, num):
        # add logic to keep track of what to do with saved answer for the challenge
        # hint: checks to see if we are currently at the saved answer and if the next input is a number and not a operation
        self.operator += str(num)
        return self.operator

    def clear(self):
        self.operator = ""
        return self.operator

    # activity 2: create delete function


    def answer(self):
        # add logic to save answers for the challenge
        #hint try except to only save valid answers
        ans = str(eval(self.operator))
        self.operator = ans
        self.operator = ""
        return ans


def main():
    root = Tk()
    app = CalculatorApp(root)
    root.mainloop()


if __name__ == "__main__":
    main()