張乃元eval(evaluate 函數)計算機(calculator)美國男生&印度女生,調色板

w3schools eval內建函數

美國男生做的計算機(Bro code)

from tkinter import *

def button_press(num):

    global equation_text

    equation_text = equation_text + str(num)

    equation_label.set(equation_text)

def equals():

    global equation_text

    try:

        total = str(eval(equation_text))

        equation_label.set(total)

        equation_text = total

    except SyntaxError:

        equation_label.set("syntax error")

        equation_text = ""

    except ZeroDivisionError:

        equation_label.set("arithmetic error")

        equation_text = ""

def clear():

    global equation_text

    equation_label.set("")

    equation_text = ""


window = Tk()
window.title("張乃元Calculator program")
window.geometry("500x500")

equation_text = ""

equation_label = StringVar()

label = Label(window, textvariable=equation_label, font=('consolas',20), bg="white", width=24, height=2)
label.pack()

frame = Frame(window)
frame.pack()

button1 = Button(frame, text=1, height=4, width=9, font=35,bg='#66B2B2', command=lambda: button_press(1))
button1.grid(row=0, column=0)

button2 = Button(frame, text=2, height=4, width=9, font=35,bg="#3399FF",
                 command=lambda: button_press(2))
button2.grid(row=0, column=1)

button3 = Button(frame, text=3, height=4, width=9, font=35,bg="#B266FF",
                 command=lambda: button_press(3))
button3.grid(row=0, column=2)

button4 = Button(frame, text=4, height=4, width=9, font=35,bg="#89916B",
                 command=lambda: button_press(4))
button4.grid(row=1, column=0)

button5 = Button(frame, text=5, height=4, width=9, font=35,bg="#24936E",
                 command=lambda: button_press(5))
button5.grid(row=1, column=1)

button6 = Button(frame, text=6, height=4, width=9, font=35,bg="#6699A1",
                 command=lambda: button_press(6))
button6.grid(row=1, column=2)

button7 = Button(frame, text=7, height=4, width=9, font=35,bg="#4A225D",
                 command=lambda: button_press(7))
button7.grid(row=2, column=0)

button8 = Button(frame, text=8, height=4, width=9, font=35,bg="#52433D",
                 command=lambda: button_press(8))
button8.grid(row=2, column=1)

button9 = Button(frame, text=9, height=4, width=9, font=35,bg="#005CAF",
                 command=lambda: button_press(9))
button9.grid(row=2, column=2)

button0 = Button(frame, text=0, height=4, width=9, font=35,bg="#A36336",
                 command=lambda: button_press(0))
button0.grid(row=3, column=0)

plus = Button(frame, text='+', height=4, width=9, font=35,bg="#E2943B",
                 command=lambda: button_press('+'))
plus.grid(row=0, column=3)

minus = Button(frame, text='-', height=4, width=9, font=35,bg="#867835",
                 command=lambda: button_press('-'))
minus.grid(row=1, column=3)

multiply = Button(frame, text='*', height=4, width=9, font=35,bg="#FBE251",
                 command=lambda: button_press('*'))
multiply.grid(row=2, column=3)

divide = Button(frame, text='/', height=4, width=9, font=35,bg="#B5CAA0",
                 command=lambda: button_press('/'))
divide.grid(row=3, column=3)

equal = Button(frame, text='=', height=4, width=9, font=35,bg="#86A697",
                 command=equals)
equal.grid(row=3, column=2)

decimal = Button(frame, text='.', height=4, width=9, font=35,bg="#78C2C4",
                 command=lambda: button_press('.'))
decimal.grid(row=3, column=1)

clear = Button(window, text='清除', height=4, width=12, font=35,bg="#B26666",
                 command=clear)
clear.pack()

window.mainloop()

印度女生做的計算機

from tkinter import *

def buttonClick(number):
    global operator
    operator = operator + str(number)
    input_value.set(operator)


def buttonClear():
    global operator
    operator = ""
    input_value.set("")


def buttonEqual():
    global operator
    result = str(eval(operator))
    input_value.set(result)
    operator = ""


main = Tk()
main.title("張乃元計算機")
operator = ""
input_value = StringVar()
display_text = Entry(main, font=("arial", 20, "bold"), textvariable=input_value, bd=30, insertwidth=4,
                     justify=RIGHT)
display_text.grid(columnspan=4)
# Row 1 7 8 9 +
btn_7 = Button(main, padx=16, bd=8, fg="gray",
               font=("arial", 20, "bold"), text="7", command=lambda: buttonClick(7))
btn_7.grid(row=1, column=0)
btn_8 = Button(main, padx=16, bd=8, fg="black",
               font=("arial", 20, "bold"), text="8", command=lambda: buttonClick(8))
btn_8.grid(row=1, column=1)

btn_9 = Button(main, padx=16, bd=8, fg="black",
               font=("arial", 20, "bold"), text="9", command=lambda: buttonClick(9))
btn_9.grid(row=1, column=2)

btn_add = Button(main, padx=16, bd=8, fg="black",
                 font=("arial", 20, "bold"), text="+", command=lambda: buttonClick("+"))
btn_add.grid(row=1, column=3)
btn_4 = Button(main, padx=16, bd=8, fg="black",bg='#99ff33',
               font=("arial", 20, "bold"), text="4", command=lambda: buttonClick(4))
btn_4.grid(row=2, column=0)

btn_5 = Button(main, padx=16, bd=8, fg="black",
               font=("arial", 20, "bold"), text="5", command=lambda: buttonClick(5))
btn_5.grid(row=2, column=1)

btn_6 = Button(main, padx=16, bd=8, fg="black",
               font=("arial", 20, "bold"), text="6", command=lambda: buttonClick(6))
btn_6.grid(row=2, column=2)

btn_sub = Button(main, padx=16, bd=8, fg="black",
                 font=("arial", 20, "bold"), text="-", command=lambda: buttonClick("-"))
btn_sub.grid(row=2, column=3)
# Row 3 - 1 2 3 *以下第3列row=3,第0欄column=0,排列0,1,2,3
btn_1 = Button(main, padx=16, bd=8, fg="black",
               font=("arial", 20, "bold"), text="1", command=lambda: buttonClick(1))
btn_1.grid(row=3, column=0)

btn_2 = Button(main, padx=16, bd=8, fg="black",
               font=("arial", 20, "bold"), text="2", command=lambda: buttonClick(2))
btn_2.grid(row=3, column=1)

btn_3 = Button(main, padx=16, bd=8, fg="black",
               font=("arial", 20, "bold"), text="3", command=lambda: buttonClick(3))
btn_3.grid(row=3, column=2)
btn_mul = Button(main, padx=16, bd=8, fg="black",
                 font=("arial", 20, "bold"), text="*", command=lambda: buttonClick("*"))
btn_mul.grid(row=3, column=3)
# Row 4 - 0 C = /
btn_0 = Button(main, padx=16, bd=8, fg="black",
               font=("arial", 20, "bold"), text="0", command=lambda: buttonClick(0))
btn_0.grid(row=4, column=0)
btn_clear = Button(main, padx=16, bd=8, fg="black",bg='#00ffff',
                   font=("arial", 20, "bold"), text="清除", command=buttonClear)
btn_clear.grid(row=4, column=1)
btn_equal = Button(main, padx=16, bd=8, fg="black",
                   font=("arial", 20, "bold"), text="=", command=buttonEqual)
btn_equal.grid(row=4, column=2)

btn_div = Button(main, padx=16, bd=8, fg="black",
                 font=("arial", 20, "bold"), text="/", command=lambda: buttonClick("/"))
btn_div.grid(row=4, column=3)
main.mainloop()

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