Ben Finney wrote:
Wildemar Wildenburger [EMAIL PROTECTED] writes:
But what use is there for floats, then? When is it OK to use them?
When one is willing to sacrifice decimal precision for speed of
calculation, and doesn't need the numbers to stay precise. E.g. when
performing millions of
On 31 Aug, 02:12, Wildemar Wildenburger
[EMAIL PROTECTED] wrote:
I've heard (ok, read) that several times now and I understand the
argument. But what use is there for floats, then? When is it OK to use them?
There are fractions that can be exactly represented by floats that
cannot be exactly
sturlamolden wrote:
On 31 Aug, 02:12, Wildemar Wildenburger
[EMAIL PROTECTED] wrote:
I've heard (ok, read) that several times now and I understand the
argument. But what use is there for floats, then? When is it OK to use them?
There are fractions that can be exactly represented by floats
On 8/31/07, Steve Holden [EMAIL PROTECTED] wrote:
sturlamolden wrote:
On 31 Aug, 02:12, Wildemar Wildenburger
[EMAIL PROTECTED] wrote:
I've heard (ok, read) that several times now and I understand the
argument. But what use is there for floats, then? When is it OK to use
them?
On Aug 31, 5:28 pm, Chris Mellon [EMAIL PROTECTED] wrote:
On 8/31/07, Steve Holden [EMAIL PROTECTED] wrote:
sturlamolden wrote:
On 31 Aug, 02:12, Wildemar Wildenburger
[EMAIL PROTECTED] wrote:
I've heard (ok, read) that several times now and I understand the
argument. But what use
In article [EMAIL PROTECTED],
Chris Mellon [EMAIL PROTECTED] wrote:
I believe that to the degree that real accounting was done in those
currencies it did in fact use non-decimal bases. Just as people don't
use decimal time values (except us crazy computer folk), you're write
1 pound 4
Chris Mellon wrote:
On 8/31/07, Steve Holden [EMAIL PROTECTED] wrote:
sturlamolden wrote:
On 31 Aug, 02:12, Wildemar Wildenburger
[EMAIL PROTECTED] wrote:
I've heard (ok, read) that several times now and I understand the
argument. But what use is there for floats, then? When is it OK to use
On Aug 31, 5:39 pm, David H Wild [EMAIL PROTECTED] wrote:
In article [EMAIL PROTECTED],
Chris Mellon [EMAIL PROTECTED] wrote:
I believe that to the degree that real accounting was done in those
currencies it did in fact use non-decimal bases. Just as people don't
use decimal time
MRAB wrote:
On Aug 31, 5:39 pm, David H Wild [EMAIL PROTECTED] wrote:
In article [EMAIL PROTECTED],
Chris Mellon [EMAIL PROTECTED] wrote:
I believe that to the degree that real accounting was done in those
currencies it did in fact use non-decimal bases. Just as people don't
use decimal
In article [EMAIL PROTECTED],
MRAB [EMAIL PROTECTED] wrote:
When I worked on the British Railways National Payroll system, about
35 years ago, we, in common with many large users, wrote our system to
deal with integer amounts of pennies, and converted to pounds,
shillings and pence in
On Sep 1, 4:51 am, Dennis Lee Bieber [EMAIL PROTECTED] wrote:
On Fri, 31 Aug 2007 12:06:49 -0400, Steve Holden [EMAIL PROTECTED]
declaimed the following in comp.lang.python:
That last sentence is patent nonsense, and completely untrue. Many
satisfactory financial applications have been
On Sep 1, 4:58 am, MRAB [EMAIL PROTECTED] wrote:
On Aug 31, 5:39 pm, David H Wild [EMAIL PROTECTED] wrote: In article
[EMAIL PROTECTED],
Chris Mellon [EMAIL PROTECTED] wrote:
I believe that to the degree that real accounting was done in those
currencies it did in fact use
In message [EMAIL PROTECTED],
sturlamolden wrote:
There are fractions that can be exactly represented by floats that
cannot be exactly represented by decimals.
There are no such.
--
http://mail.python.org/mailman/listinfo/python-list
In message [EMAIL PROTECTED], Wildemar
Wildenburger wrote:
But what use is there for floats, then? When is it OK to use
them?
Floating-point numbers are useful when you have to deal with very large and
very small amounts at the same time. In using them, you must understand
something about how
On 2007-09-01, Lawrence D'Oliveiro [EMAIL PROTECTED] wrote:
In message [EMAIL PROTECTED],
sturlamolden wrote:
There are fractions that can be exactly represented by floats that
cannot be exactly represented by decimals.
There are no such.
In that statement does float mean finite-length
Hi,
i have strings which look like money values (ie 34.45)
is there a way to convert them into float variables?
everytime i try I get this error: numb = float(my_line) ValueError:
empty string for float()
here's the code
import sys
import re
for line in sys.stdin.readlines():
luca bertini [EMAIL PROTECTED] writes:
i have strings which look like money values (ie 34.45)
is there a way to convert them into float variables?
everytime i try I get this error: numb = float(my_line) ValueError:
empty string for float()
You actually have problems here -- the
luca bertini wrote:
Hi,
i have strings which look like money values (ie 34.45)
is there a way to convert them into float variables?
everytime i try I get this error: numb = float(my_line) ValueError:
empty string for float()
here's the code
import sys
import re
for
Gary Herron wrote:
luca bertini wrote:
Hi,
i have strings which look like money values (ie 34.45)
is there a way to convert them into float variables?
everytime i try I get this error: numb = float(my_line) ValueError:
empty string for float()
here's the code
import sys
luca bertini [EMAIL PROTECTED] writes:
i have strings which look like money values (ie 34.45)
is there a way to convert them into float variables?
You most likely do *not* want floating-point numbers for currency,
since they rely on the operating system's binary floating point
support which
Ben Finney wrote:
You most likely do *not* want floating-point numbers for currency,
since they rely on the operating system's binary floating point
support which cannot accurately represent decimal fractions.
I've heard (ok, read) that several times now and I understand the
argument. But
Wildemar Wildenburger wrote:
Ben Finney wrote:
You most likely do *not* want floating-point numbers for currency,
since they rely on the operating system's binary floating point
support which cannot accurately represent decimal fractions.
I've heard (ok, read) that several times now and I
Wildemar Wildenburger [EMAIL PROTECTED] writes:
But what use is there for floats, then? When is it OK to use them?
When one is willing to sacrifice decimal precision for speed of
calculation, and doesn't need the numbers to stay precise. E.g. when
performing millions of calculations on
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