[Tutor] Newbie string & File I/O questions......
Alan Gauld
alan.gauld at btinternet.com
Mon Nov 27 00:52:39 CET 2006
"Moedeloos Overste" <kloosterjunkie at hotmail.com> wrote
> This is what I've been able to come up with so far:
>
> vDraws = input("How many times do you want to draw the lottery? :>")
input is considered a damngerous function because a
user could input malicious python code. Its better to use
raw_input and convert to an integer or float etc.
> while vDraws > 0:
> List_LotNumbers = random.sample(range(0,46), 6) #random numbers
> from
> range into list
> output_string = str(List_LotNumbers) #converting list to string
> to store
You probably want to use the join string method here rather
than str(). str just produces a string representation of your list,
which includes the []. Join will produce a string from the members
of a list
Try
>>> help(''.join)
> vView = raw_input("Do want to see the results? y/n :>")
>
> if vView == "y" or vView == "Y":
You might prefer to use 'in' here:
if vView[0] in 'yY'
will work for y, Y, yes, Yes (and yesterday too in case
thats a problem!)
> My question is: how do I write the output of each lottery drawing on
> a
> separate line
Previous poster answered that
> second question: how do i print the lottery drawings to the screen
> without
> the brackets[]
Use join instead of str
> third:can somebody point me in the right direction as to how do I
> make the
> program read from the file and count how many times a number has
> been drawn.
Try using a dictionary with each number drawn as a key and
the corresponding value being the count.
Alan G.
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