On 07-Feb-12 03:15, Steven D'Aprano wrote:
Steve Willoughby wrote:
If you need lots of precision, you might consider using the decimal
class. It'll cost you speed vs. the native floating-point type but
won't cause you round-off errors.
I'm afraid that's not correct. Decimal is still subject to
Col,
I think you wrote to me personally by accident, instead of to the Tutor list.
Nothing you said seems to be private, so I've taken the liberty of answering
back on the list.
col speed wrote:
Just an idea - I'm not an expert by any means, just a dabbler, but:
many years ago, when I was l
Steve Willoughby wrote:
On 06-Feb-12 07:25, Kapil Shukla wrote:
i tried writing a small code to calculate option price using the
binomial tree model. I compared my results with results of the same
program in excel. There seems to be a minor difference due to decimal
precision as excel is using 1
For money, you should probably use the builtin module 'decimal' instead:
http://docs.python.org/library/decimal.html
There's also the third party module 'mpmath' which provides arbitrary precision
floating point arithmetic.
http://mpmath.googlecode.com/svn/trunk/doc/build/index.html
-Modulok-
On 02/06/2012 10:25 AM, Kapil Shukla wrote:
i tried writing a small code to calculate option price using the binomial
tree model. I compared my results with results of the same program in
excel. There seems to be a minor difference due to decimal precision as
excel is using 15 decimal precision a
On Mon, Feb 6, 2012 at 10:25 AM, Kapil Shukla wrote:
> i tried writing a small code to calculate option price using the binomial
> tree model. I compared my results with results of the same program in
> excel. There seems to be a minor difference due to decimal precision as
> excel is using 15 dec
On 06-Feb-12 07:25, Kapil Shukla wrote:
i tried writing a small code to calculate option price using the
binomial tree model. I compared my results with results of the same
program in excel. There seems to be a minor difference due to decimal
precision as excel is using 15 decimal precision and p
i tried writing a small code to calculate option price using the binomial
tree model. I compared my results with results of the same program in
excel. There seems to be a minor difference due to decimal precision as
excel is using 15 decimal precision and python (both 2.7 and 3.1) using 11.
(at lea
elis aeris wrote:
[snip]
I echo Dick Moore. Several of us have requested that you study the
tutorials. We continue to see no evidence that you are doing that, nor
have you told us you are reading them or why not.
Please respond by telling us you are reading the tutorials or if not why
not. If
Elis,
You could have found the solutions to your various puzzlements by reading
in Alan's tutorial,
<
http://www.freenetpages.co.uk/hp/alan.gauld/>
The page reached by the "Simple Sequences" link probably is all
you need.
Why don't you use these extremely useful sources of help?
Dick Moores
At
On 25/03/2008, elis aeris <[EMAIL PROTECTED]> wrote:
>
> what if i want it only to 2nd decimal?
>
> what if i want to cut off everything behind decimal?
>
In: print "%.2f" % (0.99)
Out: 0.99
http://docs.python.org/lib/typesseq-strings.html
--
Michael Connors
what if i want it only to 2nd decimal?
what if i want to cut off everything behind decimal?
On Tue, Mar 25, 2008 at 6:30 AM, Michael Connors <[EMAIL PROTECTED]>
wrote:
>
> On 25/03/2008, elis aeris <[EMAIL PROTECTED]> wrote:
>
> > x = 53
> > w = 192
> > for a in range ( x, (x+192) ):
> > pri
On 25/03/2008, elis aeris <[EMAIL PROTECTED]> wrote:
>
> x = 53
> w = 192
> for a in range ( x, (x+192) ):
> print (a-x)/w
>
>
> the problem is at (a-x)/w
>
> it's supposed to return a ratio between x and w, yet it 0 all the time.
>
> ___
> Tutor mail
On 25/03/2008, elis aeris <[EMAIL PROTECTED]> wrote:
>
> x = 53
> w = 192
> for a in range ( x, (x+192) ):
> print (a-x)/w
>
>
> the problem is at (a-x)/w
>
> it's supposed to return a ratio between x and w, yet it 0 all the time.
>
> ___
> Tutor mail
x = 53
w = 192
for a in range ( x, (x+192) ):
print (a-x)/w
the problem is at (a-x)/w
it's supposed to return a ratio between x and w, yet it 0 all the time.
___
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