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#!/usr/bin/env python # -*- coding: utf-8 -*- # # Script que implementa una calculadora científica básica ## python -m pip install pyinstaller ## pyinstaller --onefile --noconsole acme.py import tkinter as tk from math import sqrt, factorial, pi def limpieza(): global calculo_consola calculo.set("0") # se pone en cero la pantalla calculo_consola = "" # borro la cuenta de la consola def clic(tecla): global calculo_consola calculo_consola = calculo_consola + tecla calculo.set(calculo_consola) def hacer_cuenta(): global calculo_consola try: total = str(eval(calculo_consola)) except Exception: limpieza() total = "ERROR" calculo.set(total) calculo_consola = "" def borrar_caracter(): global calculo_consola if len(calculo_consola) > 1: calculo_consola = calculo_consola[:-1] calculo.set(calculo_consola) else: calculo_consola = "" calculo.set("0") # ventana para contener la calculadora ventana = tk.Tk() ventana.title("Calculadora ACME") ventana.config(width=390, height=600, bg="Light Steel Blue") ventana.resizable(0,0) # creo una variable string gràfica para mostrar el cálculo en la pantalla # de la calculadora calculo = tk.StringVar() # llamo a una función que limpie la pantalla antes de empezar limpieza() # creo la pantalla pantalla = tk.Entry( font = ("arial",20,"bold"), width = 20, bd = 18, bg = "powder blue", justify = "right", state = tk.DISABLED, textvariable = calculo ) pantalla.place(x=20, y=50) # defino las dimensiones de las teclas ancho = 10 alto = 2 # creo una variable para almacenar el cálculo del lado de la consola calculo_consola = "" ###################### TECLAS ########################## # tecla para borrar el ultimo caracter ingresado tecla = tk.Button(text="DEL", width=ancho, height=alto, bg="medium aquamarine", command=borrar_caracter) tecla.place(x=287, y=140) ### Primera fila: 1 2 3 + ###### tecla = tk.Button(text="1", width=ancho, height=alto, command=lambda:clic("1")) tecla.place(x=17, y=200) tecla = tk.Button(text="2", width=ancho, height=alto, command=lambda:clic("2")) tecla.place(x=107, y=200) tecla = tk.Button(text="3", width=ancho, height=alto, command=lambda:clic("3")) tecla.place(x=197, y=200) tecla = tk.Button(text="+", width=ancho, height=alto, bg="Steel Blue", command=lambda:clic("+")) tecla.place(x=287, y=200) ### Segunda fila: 4 5 6 - ###### tecla = tk.Button(text="4", width=ancho, height=alto, command=lambda:clic("4")) tecla.place(x=17, y=260) tecla = tk.Button(text="5", width=ancho, height=alto, command=lambda:clic("5")) tecla.place(x=107, y=260) tecla = tk.Button(text="6", width=ancho, height=alto, command=lambda:clic("6")) tecla.place(x=197, y=260) tecla = tk.Button(text="-", width=ancho, height=alto, bg="Steel Blue", command=lambda:clic("-")) tecla.place(x=287, y=260) ### Tercera fila: 7 8 9 x ###### tecla = tk.Button(text="7", width=ancho, height=alto, command=lambda:clic("7")) tecla.place(x=17, y=320) tecla = tk.Button(text="8", width=ancho, height=alto, command=lambda:clic("8")) tecla.place(x=107, y=320) tecla = tk.Button(text="9", width=ancho, height=alto, command=lambda:clic("9")) tecla.place(x=197, y=320) tecla = tk.Button(text="x", width=ancho, height=alto, bg="Steel Blue", command=lambda:clic("*")) tecla.place(x=287, y=320) ### Cuarta fila: ( 0 ) / ###### tecla = tk.Button(text="(", width=ancho, height=alto, bg="Steel Blue2", command=lambda:clic("(")) tecla.place(x=17, y=380) tecla = tk.Button(text="0", width=ancho, height=alto, command=lambda:clic("0")) tecla.place(x=107, y=380) tecla = tk.Button(text=")", width=ancho, height=alto, bg="Steel Blue2", command=lambda:clic(")")) tecla.place(x=197, y=380) tecla = tk.Button(text="/", width=ancho, height=alto, bg="Steel Blue", command=lambda:clic("/")) tecla.place(x=287, y=380) ### Quinta fila: Raiz, coma decimal, potencia, resto ###### tecla = tk.Button(text="\u221A", width=ancho, height=alto, bg="Steel Blue3", command=lambda:clic("sqrt(")) tecla.place(x=17, y=440) tecla = tk.Button(text=".", width=ancho, height=alto, bg="Steel Blue2", command=lambda:clic(".")) tecla.place(x=107, y=440) tecla = tk.Button(text="POW", width=ancho, height=alto, bg="Steel Blue3", command=lambda:clic("**")) tecla.place(x=197, y=440) tecla = tk.Button(text="%", width=ancho, height=alto, bg="Steel Blue3", command=lambda:clic("%")) tecla.place(x=287, y=440) ### Sexta fila: Clear Factorial PI = ###### tecla = tk.Button(text="CL", width=ancho, height=alto, bg="medium aquamarine", command=limpieza) tecla.place(x=17, y=500) tecla = tk.Button(text="!", width=ancho, height=alto, bg="Steel Blue3", command=lambda:clic("factorial(")) tecla.place(x=107, y=500) tecla = tk.Button(text="\u03c0", width=ancho, height=alto, bg="Steel Blue3", command=lambda:clic(str(pi))) tecla.place(x=197, y=500) tecla = tk.Button(text="=", width=ancho, height=alto, bg="medium aquamarine", command=hacer_cuenta) tecla.place(x=287, y=500) ventana.mainloop()
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