Lecture 계산기 작성

계산기 작성

윈도우에서 제공하는 계산기를 기본으로 계산기를 만든다.

from tkinter import *
'''
s = '123-456*789/'

def f_cal(s):
    for i in s:
        if i.isnumeric():
            
        if i != '*'
    if s.find('*') != -1:
        s = s.split('*')
        
    else:
            
        if s.find('-') == -1:
            if s.find('*') == -1:
                if s.find('/') == -1:
                    
    s1 = s.split('+')
    
    for i in s.split('+'):
        for j in i.split('-'):
            
    if len(s1) == 1:
        s1 = s.split('-')
        
'''
def f_s2n(s):
    if s.find('.') == -1:
        s = int(s)
    else:
        s = float(s)
    return s

def f_digit(s):
    ss = s[-4:]
    if ss.startswith('e'):
        aux = s[:10] + ss
        print(aux)
    else:
        aux = s[:14]
        print(aux)
    return aux

def f_num(var):
    global mem, expression, ind
    s = lbl2.cget('text')
    if ind:
        s = str(var)
        ind = False
    else:
        s = s + str(var)
    lbl2.config(text=s)
    
def f_pm():
    s = lbl2.cget('text')
    s = f_s2n(s)
    s = -1*s
    s = str(s)
    lbl2.config(text=s)

def f_point():
    s = lbl2.cget('text')
    if s.find('.') == -1:
        s = s + '.'
        lbl2.config(text=s)

def f_equal():
    global mem, expression
    s1 = lbl1.cget('text')
    s2 = lbl2.cget('text')
    
    m = f_s2n(mem)
    s2 = f_s2n(s2)
    match expression:
        case '+':
            s = m + s2
        case '-':
            s = m - s2
        case '*':
            s = m * s2
        case '/':
            s = m / s2
    s1 = f'{s1}{s2}='
    ind = False
    s = str(s)
    print(s)
    if len(s)>14:
        s = s[:14]
        print(s)
    lbl1.config(text=s1)
    lbl2.config(text=s)
    
def f_plus():
    global mem, expression, ind
    aux = lbl2.cget('text')
    mem = aux
    expression = '+'
    lbl1.config(text=f'{mem}+')
    lbl2.config(text='')

def f_minus():
    global mem, expression
    aux = lbl2.cget('text')
    mem = aux
    expression = '-'
    lbl1.config(text=f'{mem}-')
    lbl2.config(text='')

def f_mul():
    global mem, expression
    aux = lbl2.cget('text')
    mem = aux
    expression = '*'
    lbl1.config(text=f'{mem}*')
    lbl2.config(text='')

def f_div():
    global mem, expression
    aux = lbl2.cget('text')
    mem = aux
    expression = '/'
    lbl1.config(text=f'{mem}/')
    lbl2.config(text='')

def f_sqrt():
    import numpy as np
    global mem, expression
    aux = lbl2.cget('text')
    s = np.sqrt(float(aux))
    s = str(s)
    if len(s)>14:
        s = s[:14]
    ss = f'sqrt({aux})='
    lbl1.config(text=ss)
    lbl2.config(text=s)

def f_pow():
    import numpy as np
    global mem, expression
    aux = lbl2.cget('text')
    s = (float(aux)**2)
    s = str(s)
    if len(s)>14:
        s = s[:14]
    ss = f'({aux})**2='
    lbl1.config(text=ss)
    lbl2.config(text=s)
    
def f_inv():
    import numpy as np
    global mem, expression
    aux = lbl2.cget('text')
    s = 1/float(aux)
    s = str(s)
    if len(s)>14:
        s = s[:14]
    ss = f'1/{aux}='
    lbl1.config(text=ss)
    lbl2.config(text=s)

def f_per():
    import numpy as np
    global mem, expression
    aux = lbl2.cget('text')
    s = 1/float(aux)
    s = str(s)
    ss = f'1/{aux}='
    lbl1.config(text=ss)
    lbl2.config(text=s)

def f_ce():
    import numpy as np
    global mem, expression
    aux = lbl2.cget('text')
    lbl2.config(text='')

def f_c():
    import numpy as np
    global mem, expression
    mem = 0
    expression = ''
    lbl1.config(text='')
    lbl2.config(text='')

def f_back():
    import numpy as np
    global mem, expression
    s = lbl2.cget('text')
    s = s[:-1]
    lbl2.config(text=s)

win = Tk()

mem = ''
expression = ''
ind = False

lbl1 = Label(win,text="", font=('Arial',14), justify="right")
lbl2 = Label(win,text="", font=('Arial',24), justify="right")
btn0 = Button(win,text='0',font=('Arial',18),width=4,height=2,command=lambda:f_num(0))
btn1 = Button(win,text='1',font=('Arial',18),width=4,height=2,command=lambda:f_num(1))
btn2 = Button(win,text='2',font=('Arial',18),width=4,height=2,command=lambda:f_num(2))
btn3 = Button(win,text='3',font=('Arial',18),width=4,height=2,command=lambda:f_num(3))
btn4 = Button(win,text='4',font=('Arial',18),width=4,height=2,command=lambda:f_num(4))
btn5 = Button(win,text='5',font=('Arial',18),width=4,height=2,command=lambda:f_num(5))
btn6 = Button(win,text='6',font=('Arial',18),width=4,height=2,command=lambda:f_num(6))
btn7 = Button(win,text='7',font=('Arial',18),width=4,height=2,command=lambda:f_num(7))
btn8 = Button(win,text='8',font=('Arial',18),width=4,height=2,command=lambda:f_num(8))
btn9 = Button(win,text='9',font=('Arial',18),width=4,height=2,command=lambda:f_num(9))
btnpm = Button(win,text='+/-',font=('Arial',18),width=4,height=2,command=f_pm)
btnpoint = Button(win,text='.',font=('Arial',18),width=4,height=2,command=f_point)
btnequal = Button(win,text='=',font=('Arial',18),width=4,height=2,command=f_equal)
btnplus = Button(win,text='+',font=('Arial',18),width=4,height=2,command=f_plus)
btnminus = Button(win,text='-',font=('Arial',18),width=4,height=2,command=f_minus)
btnmul = Button(win,text='X',font=('Arial',18),width=4,height=2,command=f_mul)
btndiv = Button(win,text='/',font=('Arial',18),width=4,height=2,command=f_div)
btnsqrt = Button(win,text='sqrt',font=('Arial',18),width=4,height=2,command=f_sqrt)
btnpow = Button(win,text='pow',font=('Arial',18),width=4,height=2,command=f_pow)
btninv = Button(win,text='1/x',font=('Arial',18),width=4,height=2,command=f_inv)
btnper = Button(win,text='%',font=('Arial',18),width=4,height=2,command=f_per)
btnce = Button(win,text='CE',font=('Arial',18),width=4,height=2,command=f_ce)
btnc = Button(win,text='C',font=('Arial',18),width=4,height=2,command=f_c)
btnback = Button(win,text='<=',font=('Arial',18),width=4,height=2,command=f_back)
lbl1.grid(row=0,columnspan=16,sticky='e')
lbl2.grid(row=1,columnspan=16,sticky='e')
btn0.grid(row=7,column=1)
btn1.grid(row=6,column=0)
btn2.grid(row=6,column=1)
btn3.grid(row=6,column=2)
btn4.grid(row=5,column=0)
btn5.grid(row=5,column=1)
btn6.grid(row=5,column=2)
btn7.grid(row=4,column=0)
btn8.grid(row=4,column=1)
btn9.grid(row=4,column=2)
btnpm.grid(row=7,column=0)
btnpoint.grid(row=7,column=2)
btnequal.grid(row=7,column=3)
btnplus.grid(row=6,column=3)
btnminus.grid(row=5,column=3)
btnmul.grid(row=4,column=3)
btndiv.grid(row=3,column=3)
btnsqrt.grid(row=3,column=2)
btnpow.grid(row=3,column=1)
btninv.grid(row=3,column=0)
btnper.grid(row=2,column=0)
btnce.grid(row=2,column=1)
btnc.grid(row=2,column=2)
btnback.grid(row=2,column=3)
win.mainloop()