"Lea Parker" <lea-par...@bigpond.com> wrote in
Peter has pointred you to the answer, here are some
general comments:
def main():
try:
SDee the recent posts re the scope of try/except handling.
This is probably a bit too much for a single exception type!
# Open file for reading
infile = open('charge_accounts.txt', 'r')
# Read the contents of the file inot a lsit
account_number = infile.readlines()
As a point of style if a variabl;e holds a collection of things
use the plural form so this would be batter named
account_numbers
#Convert each element into an int
index = 0
while index != len(account_number):
account_number[index] = int(account_number[index])
index += 1
This could be done using map():
account_number = map(int,account_number)
or using a list comprehension:
account_number = [int(num) for num in account_number]
or even using a 'for' loop:
for index, num in enumerate(account_number):
account_number[index] = int(num)
Any of which would be better than the while style.
Use 'while' for cases where you don't know in advance
how many items you need to proccess.
# Print the contents of the list
print account_number
#Get an account number to search for
search = raw_input('Enter a charge account number: ')
#Determine whether the product number is in thelist
if search in account_number:
As Peter says, check the types here...
print search, 'charge account number is VALID'
else:
print search, 'charge account number is INVALID'
infile.close()
except ValueError:
print 'file open error message'
HTH,
--
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/
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