python-tkinter-calculator/CalculadoraV4.py at main · natfalcon7/python-tkinter-calculator · GitHub

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from tkinter import *

#-----------------------------------------------------------------------------
raiz = Tk()
raiz.title("Calculator")

miFrame = Frame(raiz, bg="black")
miFrame.pack()

operacion = ""
resultado = 0.0
reset_pantalla = False

#---------------------------- PANTALLA ------------------------
numeroPantalla = StringVar()

pantalla = Entry(
    miFrame,
    textvariable=numeroPantalla,
    bg="black",
    fg="#03f943",
    justify="right",
    font=("Arial", 14)
)
pantalla.grid(row=0, column=0, columnspan=3, padx=10, pady=10)

#-------------------- PULSACIONES ------------------------------

def pulsados(num):
    global reset_pantalla

    if reset_pantalla:
        numeroPantalla.set(num)
        reset_pantalla = False
        return

    if num == "." and "." in numeroPantalla.get():
        return

    numeroPantalla.set(numeroPantalla.get() + num)

#---------------------- CÁLCULO CENTRAL ------------------------

def calcular():
    global resultado, operacion

    num_actual = float(numeroPantalla.get())

    if operacion == "suma":
        resultado += num_actual
    elif operacion == "resta":
        resultado -= num_actual
    elif operacion == "multi":
        resultado *= num_actual
    elif operacion == "div":
        resultado /= num_actual

#---------------------- OPERACIONES ----------------------------

def suma(num):
    global resultado, operacion, reset_pantalla

    if operacion != "":
        calcular()
    else:
        resultado = float(num)

    operacion = "suma"
    reset_pantalla = True

def resta(num):
    global resultado, operacion, reset_pantalla

    if operacion != "":
        calcular()
    else:
        resultado = float(num)

    operacion = "resta"
    reset_pantalla = True

def multi(num):
    global resultado, operacion, reset_pantalla

    if operacion != "":
        calcular()
    else:
        resultado = float(num)

    operacion = "multi"
    reset_pantalla = True

def div(num):
    global resultado, operacion, reset_pantalla

    if operacion != "":
        calcular()
    else:
        resultado = float(num)

    operacion = "div"
    reset_pantalla = True

#---------------------- RESULTADO -------------------------------

def resultado_final():
    global operacion

    if operacion != "":
        calcular()
        numeroPantalla.set(resultado)
        operacion = ""

#----------------------- LIMPIAR -------------------------------

def clear():
    global resultado, operacion, reset_pantalla
    resultado = 0.0
    operacion = ""
    reset_pantalla = False
    numeroPantalla.set("")

#---------------------- BOTONES --------------------------------

Button(miFrame, text="7", width=5, height=2, bg="#d4af37", command=lambda:pulsados("7")).grid(row=1, column=0)
Button(miFrame, text="8", width=5, height=2, bg="#d4af37", command=lambda:pulsados("8")).grid(row=1, column=1)
Button(miFrame, text="9", width=5, height=2, bg="#d4af37", command=lambda:pulsados("9")).grid(row=1, column=2)
Button(miFrame, text="/", width=5, height=2, bg="#d4af37", command=lambda:div(numeroPantalla.get())).grid(row=1, column=3)

Button(miFrame, text="4", width=5, height=2, bg="#d4af37", command=lambda:pulsados("4")).grid(row=2, column=0)
Button(miFrame, text="5", width=5, height=2, bg="#d4af37", command=lambda:pulsados("5")).grid(row=2, column=1)
Button(miFrame, text="6", width=5, height=2, bg="#d4af37", command=lambda:pulsados("6")).grid(row=2, column=2)
Button(miFrame, text="*", width=5, height=2, bg="#d4af37", command=lambda:multi(numeroPantalla.get())).grid(row=2, column=3)

Button(miFrame, text="1", width=5, height=2, bg="#d4af37", command=lambda:pulsados("1")).grid(row=3, column=0)
Button(miFrame, text="2", width=5, height=2, bg="#d4af37", command=lambda:pulsados("2")).grid(row=3, column=1)
Button(miFrame, text="3", width=5, height=2, bg="#d4af37", command=lambda:pulsados("3")).grid(row=3, column=2)
Button(miFrame, text="-", width=5, height=2, bg="#d4af37", command=lambda:resta(numeroPantalla.get())).grid(row=3, column=3)

Button(miFrame, text="0", width=5, height=2, bg="#d4af37", command=lambda:pulsados("0")).grid(row=4, column=0)
Button(miFrame, text=".", width=5, height=2, bg="#d4af37", command=lambda:pulsados(".")).grid(row=4, column=1)
Button(miFrame, text="=", width=5, height=2, bg="#d4af37", command=resultado_final).grid(row=4, column=2)
Button(miFrame, text="+", width=5, height=2, bg="#d4af37", command=lambda:suma(numeroPantalla.get())).grid(row=4, column=3)

Button(miFrame, text="C", width=5, height=2, bg="#ff6b6b", command=clear).grid(row=0, column=3)

#----------------------------------------------------------------
raiz.mainloop()