On 26 May 2007 00:23:32 -0700, mark <[EMAIL PROTECTED]> wrote:
> Hi I am trying to get a piece of code to work based on an exercise in
> a book. Any help appreciated. Can someone please explain what is going
> on here.
>
> I am trying to read from a text file a list of cards with the
> following format and sort firstly by suit and then by rank
>
> h 1
> d 2
> c 5
> s 9
> h2
> d3
>
> etc...
>
> I get the following error;
> Traceback (most recent call last):
> File "F:/###UNI###/ITC106/ass2/cardread.py", line 25, in <module>
> t.append( t[0] + 400 )
> AttributeError: 'str' object has no attribute 'append'
> def read_cards(filename):
> cards = []
> for card in open(filename, 'r'):
> cards.append(card.strip())
> return cards
>
> # read the deck of cards from a file
> filename = 'cards.txt'
> cards = read_cards(filename)
>
>
> for t in read_cards(filename):
> if t[1] == 'h':
> t.append( t[0] + 100 )
> elif t[1] == 'd':
> t.append( t[0] + 200 )
> elif t[1] == 'c':
> t.append( t[0] + 300 )
> else:
> t.append( t[0] + 400 )
In read_cards function you are appending a string in the list
'cards' , where i guess you wanted to append a list of suit and rank
in list cards.
def read_cards(filename):
cards = []
for card in file(filename):
cards.append(cards.split()) # i assume that suit and rank is
separated by white space
return cards
or better still
cards = [card.split() for card in file(filename)]
Cheers,
----
Amit Khemka -- onyomo.com
Home Page: www.cse.iitd.ernet.in/~csd00377
Endless the world's turn, endless the sun's Spinning, Endless the quest;
I turn again, back to my own beginning, And here, find rest.
--
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