[python] 활용편 - 01 - GUI 계산기 만들기

import tkinter as tk

disValue = 0
operator = {'+':1, '-':2, '/':3, '*':4, 'C':5, '=':6}
stoValue = 0
opPre = 0

def numer_click(value):
    # print('숫자', value)
    global disValue
    disValue = (disValue*10) + value
    str_value.set(disValue)

def clear():
    global disValue, stoValue, opPre
    stoValue = 0
    opPre = 0
    disValue = 0
    str_value.set(disValue)

def oprator_click(value):
    # print('명령', value)
    global disValue, operator, stoValue, opPre
    op = operator[value]
    if op == 5: # C
        clear()
    elif disValue == 0:
        opPre = 0
    elif opPre == 0:
        opPre = op
        stoValue = disValue
        disValue = 0
        str_value.set(disValue)
    elif op == 6: # =
        if opPre == 1:
            disValue = stoValue + disValue
        if opPre == 2:
            disValue = stoValue - disValue
        if opPre == 3:
            disValue = stoValue / disValue
        if opPre == 4:
            disValue = stoValue * disValue

        str_value.set(str(disValue))
        disValue = 0
        stoValue = 0
        opPre = 0
    else:
        clear()

def button_click(value):
    print(value)
    try:
        value = int(value)
        numer_click(value)
    except:
        oprator_click(value)



win = tk.Tk()
win.title('계산기')

str_value = tk.StringVar()
str_value.set(str(disValue))
dis = tk.Entry(win, textvariable=str_value, justify='right', bg = 'white', fg='red')
dis.grid(column=0, row=0, columnspan=4, ipadx=150, ipady=30)

calItem = [['1','2','3','4'],
           ['5','6','7','8'],
           ['9','0','+','-'],
           ['/','*','C','=']]

for i,item in enumerate(calItem):
    for k,item in enumerate(item):

        try:
            color = int(item)
            color = 'black'
        except:
            color = 'green'

        bt = tk.Button(win,
                       text=item,
                       width=10,
                       height=5,
                       bg =color,
                       fg = 'white',
                       command = lambda cmd=item: button_click(cmd)
                       )
        bt.grid(column=k, row=(i+1))

# 위 calItem ~ for문으로 아래 요약 가능
# tk.Button(win, text='1', width=10, height=5).grid(column=0, row=1)
# tk.Button(win, text='2', width=10, height=5).grid(column=1, row=1)
# tk.Button(win, text='3', width=10, height=5).grid(column=2, row=1)
# tk.Button(win, text='4', width=10, height=5).grid(column=3, row=1)
#
# tk.Button(win, text='5', width=10, height=5).grid(column=0, row=2)
# tk.Button(win, text='6', width=10, height=5).grid(column=1, row=2)
# tk.Button(win, text='7', width=10, height=5).grid(column=2, row=2)
# tk.Button(win, text='8', width=10, height=5).grid(column=3, row=2)
#
# tk.Button(win, text='9', width=10, height=5).grid(column=0, row=3)
# tk.Button(win, text='0', width=10, height=5).grid(column=1, row=3)
# tk.Button(win, text='+', width=10, height=5).grid(column=2, row=3)
# tk.Button(win, text='-', width=10, height=5).grid(column=3, row=3)
#
# tk.Button(win, text='/', width=10, height=5).grid(column=0, row=4)
# tk.Button(win, text='*', width=10, height=5).grid(column=1, row=4)
# tk.Button(win, text='C', width=10, height=5).grid(column=2, row=4)
# tk.Button(win, text='=', width=10, height=5).grid(column=3, row=4)
win.mainloop()

계산기