how do I write a GUI-based program that displays labeled fields for the inputs and a text area for the output? here is what I have so far, i can't get the numbers to line up.

from breezypythongui import EasyFrame

class TidbitGUI(EasyFrame):

def __init__(self):

"""Set up the window and widgets."""

EasyFrame.__init__(self, title = "Tidbit Loan Scheduler")

"""Input fields"""

self.addLabel(text = "Purchase Price: ", row = 0, column = 0)

self.addLabel(text = "Annual Intrest Rate in %: ", row = 1, column = 0 )

self.purchasePrice = self.addFloatField(value = 0.0, row = 0, column = 1)

self.rate = self.addFloatField(value = 0, row = 1, column = 1)

"""Command button"""

self.outputArea = self.addTextArea("", row = 4, column = 0, columnspan = 2, width = 80, height = 20)

"""Output text box"""

self.calculate = self.addButton(text = "Compute", row = 3, column =0, columnspan = 2, command = self.calculateor)

def calculateor(self):

purchase_Price = self.purchasePrice.getNumber()

rate = (self.rate.getNumber()/100)

if purchase_Price ==0 or rate == 0:

return

ANNUAL_RATE = .12

MONTHLY_RATE = ANNUAL_RATE / 12

downPayment = purchase_Price * 0.1

purchasePrice = purchase_Price - downPayment

monthlyPayment = rate * purchase_Price

month = 1

balance = purchase_Price

string=("Month Starting Balance Interest to Pay Principal to Pay Payment Ending Balance")

while balance > 0:

if monthlyPayment > balance:

monthlyPayment = balance

interest = 0

else:

interest = balance * MONTHLY_RATE

principal = monthlyPayment - interest

remaining = balance - principal

string += ("%2d%15.2f%15.2f%17.2f%17.2f%17.2f" % (month, balance, interest, principal, monthlyPayment, remaining))

balance = remaining

month += 1

self.outputArea["state"] = "normal"

self.outputArea.setText(string)

self.outputArea["state"] = "disabled"

def main():

"""Instantiate and pop up the window."""

TidbitGUI().mainloop()

if __name__ == "__main__":

try:

while True:

main()

except KeyboardInterrupt:

print(" Program closed.")