Es un programa en el que aparece un cuadro de diálogo, utiliza la librería tkinter. Este es parte del código
import tkinter
class MainWindow(tkinter.Frame):
def __init__(self, parent):
super(MainWindow, self).__init__(parent)
self.parent = parent
self.grid(row=0, column=0)
self.principal = tkinter.DoubleVar()
self.principal.set(1000.0)
self.rate = tkinter.DoubleVar()
self.rate.set(5.0)
self.years = tkinter.IntVar()
self.amount = tkinter.StringVar()
principalLabel = tkinter.Label(self, text="Principal $:", anchor=tkinter.W, underline=0)
principalScale = tkinter.Scale(self, variable=self.principal, command=self.updateUi, from_=100, to=10000000, resolution=100, orient=tkinter.HORIZONTAL)
rateLabel = tkinter.Label(self, text="Rate %:", underline=0, anchor=tkinter.W)
rateScale = tkinter.Scale(self, variable=self.rate, command=self.updateUi, from_=1, to=100, resolution=0.25, digits=5, orient=tkinter.HORIZONTAL)
yearsLabel = tkinter.Label(self, text="Years:", underline=0, anchor=tkinter.W)
yearsScale = tkinter.Scale(self, variable=self.years, command=self.updateUi, from_=1, to=50, orient=tkinter.HORIZONTAL)
amountLabel = tkinter.Label(self, text="Amount $", anchor=tkinter.W)
actualAmountLabel = tkinter.Label(self, textvariable=self.amount, relief=tkinter.SUNKEN, anchor=tkinter.E)
principalLabel.grid(row=0, column=0, padx=2, pady=2, sticky=tkinter.W)
principalScale.grid(row=0, column=1, padx=2, pady=2, sticky=tkinter.EW)
rateLabel.grid(row=1, column=0, padx=2, pady=2, sticky=tkinter.W)
rateScale.grid(row=1, column=1, padx=2, pady=2, sticky=tkinter.EW)
yearsLabel.grid(row=2, column=0, padx=2, pady=2, sticky=tkinter.W)
yearsScale.grid(row=2, column=1, padx=2, pady=2, sticky=tkinter.EW)
amountLabel.grid(row=3, column=0, padx=2, pady=2, sticky=tkinter.W)
actualAmountLabel.grid(row=3, column=1, padx=2, pady=2, sticky=tkinter.EW)
principalScale.focus_set()
self.updateUi()
parent.bind("<Alt-p>", lambda *ignore: principalScale.focus_set())
parent.bind("<Alt-r>", lambda *ignore: rateScale.focus_set())
parent.bind("<Alt-y>", lambda *ignore: yearsScale.focus_set())
parent.bind("<Control-q>", self.quit)
parent.bind("<Escape>", self.quit)
def updateUi(self, *ignore):
amount = self.principal.get() * ((1 + (self.rate.get() / 100.0)) ** self.years.get())
self.amount.set("{0:.2f}".format(amount))
def quit(self, event=None):
self.parent.destroy()
application = tkinter.Tk()
path = os.path.join(os.path.dirname(__file__), "images/")
if sys.platform.startswith("win"):
icon = path + "interest.ico"
else:
icon = "@" + path + "interest.xbm"
application.iconbitmap(icon)
application.title("Interest")
window = MainWindow(application)
application.protocol("WM_DELETE_WINDOW", window.quit)
application.mainloop()