hey steven-your examlpe was very helpful. is there a paragraph symbolg
missing in
fp.write("Food = %s, store = %s, price = %s\n" % triplet
Steven D'Aprano wrote:
> On Mon, 26 Dec 2005 20:56:17 -0800, homepricemaps wrote:
>
> > sorry for asking such beginner questions but i tried this and nothing
> > wrote to my text file
> >
> > for food, price, store in bs(food, price, store):
> > out = open("test.txt", 'a')
> > out.write (food + price + store)
> > out.close()
>
> What are the contents of food, price and store? If "nothing wrote to my
> text file", chances are all three of them are the empty string.
>
>
> > while if i write the following without the for i at least get
> > something?
> > out = open("test.txt", 'a')
> > out.write (food + price + store)
> > out.close()
>
> You get "something". That's not much help. But I predict that what you are
> getting is the contents of food price and store, at least one of which are
> not empty.
>
> You need to encapsulate your code by separating the part of the code that
> reads the html file from the part that writes the text file. I suggest
> something like this:
>
>
> def read_html_data(name_of_file):
> # I don't know BeautifulSoup, so you will have to fix this...
> datafile = BeautifulSoup(name_of_file)
> # somehow read in the foods, prices and stores
> # for each set of three, store them in a tuple (food, store, price)
> # then store the tuples in a list
> # something vaguely like this:
> data = []
> while 1:
> food = datafile.get("food") # or whatever
> store = datafile.get("store")
> price = datafile.get("price")
> data.append( (food,store,price) )
> datafile.close()
> return data
>
> def write_data_to_text(datalist, name_of_file):
> # Expects a list of tuples (food,store,price). Writes that list
> # to name_of_file separated by newlines.
> fp = file(name_of_file, "w")
> for triplet in datalist:
> fp.write("Food = %s, store = %s, price = %s\n" % triplet
> fp.close()
>
>
> Hope this helps.
>
>
>
> --
> Steven.
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