"Doug Potter" <[EMAIL PROTECTED]> wrote
>I don't get the output I would expect from the following.
> >>> a = open('arp.txt')
> >>> file = a.read()
> >>> file = file.split('\n')
Easier to do
file = open('arp.txt').readlines()
But file is a bad name since its an alias for open...
> >>> b = open('arplist.txt','w')
Not sure why you do this
> >>> clean1 = []
> >>>
clean is an empty list
> >>> for i in file:
> ... clean1 = i[26:40]
clean is now overwritten by a string until you reach the
end of the file upon which clean1 will be an empty string
> >>> clean1
> ''
Which it is...
I think you may have meant to use the append method
for i in file:
clean1.append(i[26:40])
And since you can iterate over a file the whole thing shrinks to:
clean1 = []
for i in open('arp.txt'):
clean1.append(i[26:40])
print clean1
Or even more succinctly:
clean1 = [i[26:40] for i in open('arp.txt')]
print clean1
HTH,
--
Alan Gauld
Author of the Learn to Program web site
http://www.freenetpages.co.uk/hp/alan.gauld
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