Distance Education

I sent it off with one rather annoying fatal bug in it . If you give it a decimal value for the area, it dies.

So, how did you guys solve it?

Here's mine:

Added (2009-05-05, 1:59 Pm)
---------------------------------------------
#Paint Quote Program 1.3
#Written by Hayden Johns

#Gives a quote for the cost of to paint a house
#based on information given by the user.

#==================================================
#Program History:

#----------
#Changes from 1.1:
#----------
#Fatal bug in 'confirm details'
#Fixed thanks to the advice of the Ubuntu community

#Fatal bug in 'write to file'
#Fixed by substituting code from 'confirm details'.

#Spit and polish changes. Neatened output.

#----------
#Changes from 1.2:
#----------
#Added validation into input to prevent
#fatal errors occuring in data type conversion.

#More spit and polish changes. Added measurements to values (meters, $, etc.)

#==================================================

print "**************"
print "*Paint Quoter*"
print "**************"

#Set variables and constants
NUM="1234567890."

#Calculation Variables
totalcost = 0
totalarea = 0
area = None

#Sentry variables. Check contains unnaceptable values for integers
#and accept acts as a boolean.
check = 1
accept = 0

#Each room is stored as a tuple, which is stored in this list.
house = []

#Get adress from the user. Adress is constant after it is set.
address = raw_input("What is the Customer's Address?\n")

#keep adding rooms until the user stops

loop = ""
while loop.lower() !="n":
accept = 0
while accept == 0:
#Get information about room from the user
area = raw_input("\n\nWhat is the area to be painted in this room? (square meters)")

#check that input is valid before converting it.
check = ""
for char in area:
if char not in NUM:
check += char

if check == "": #If there are no illegal characters in the string, convert and escape the loop
area = int(area)
accept = 1
else: #If there are illegal characters in the string, generate an error message
print "Error. You must enter a number."
accept = 0

colour = raw_input("What colour is the paint?")

#calculates the price of individual room, and
#adds it to the total cost.
paintcost = 1
if colour.lower() != "white":
paintcost = 2
else:
paintcost = 1
cost = area * 5 * paintcost
totalcost += cost
totalarea += area

#Add room information into house
house += [(area, colour, cost),]

#querey if there are any more rooms. Break loop if answer is no.
loop = ""
while loop.lower() != "y" and loop.lower() != "n":
#prevents illegal answers. generates error message and asks again if the answer is not y or n
loop = raw_input("\nAre there any more rooms? (y/n)")
if loop.lower() != "y" and loop.lower() != "n":
print "\nERROR. Please type Y for Yes or N for No, and then press Enter."

#CONFIRM DETAILS
#Displays the details the user entered in the room on the screen.
print"\n-----------\nConfirm the details:\n"

rooms = len(house)
print "The address is", address
print "Total number of rooms is", rooms
print "The area to be painted in each of the rooms are:\n",
for a, c, p in house: #prints the area of each room (a is area, c is colour, p is price)
print str(a) + " meters square"
print "\nThe colours to be painted are:\n",
for a, c, p in house: #prints the colour of each room (a is area, c is colour, p is price)
print c
print "\nThe costs of each room are:\n",
for a, c, p in house: #prints the cost of each room (a is area, c is colour, p is price)
print "$" + str(p)
print "\nThe total area to be painted is " + str(totalarea) + " meters square"
print "\nThe total cost is $" + str(totalcost)

Added (2009-05-05, 1:59 Pm)
---------------------------------------------
#WRITE TO FILE
#Waits for the user to check the details and prompt the program,
#and then saves the detailsto a text file.
raw_input("Press enter to write to file, or press Ctrl+C to end.")
print "Writing to file..."

text_file = open("paintquote.txt", "w")

text_file.write("**************\n")
text_file.write("*Paint Quoter*\n")
text_file.write("**************\n")

text_file.write("Address:\n")
text_file.write(address)
text_file.write("\n\nNumber of rooms:\n")
text_file.write(str(rooms))
text_file.write("\n\nArea of each room:\n")
for a, c, p in house: #prints the area of each room (a is area, c is colour, p is price)
text_file.write(str(a)+"m, ")
text_file.write("\n\nColours to be painted in each room:\n")
for a, c, p in house: #prints the colour of each room (a is area, c is colour, p is price)
text_file.write(str©+", ")
text_file.write("\n\nCosts of each room:\n")
for a, c, p in house: #prints the cost of each room (a is area, c is colour, p is price)
text_file.write("$"+str(p)+", ")
text_file.write("\n\nTotal area: ")
text_file.write(str(totalarea) + " meters square")
text_file.write("\n\n----------\nTotal Cost: $")
text_file.write(str(totalcost))
text_file.close()

print "Done"