Yesterday I was shocked, SHOCKED, to discover that round() is
occasionally rounding incorrectly. For example,
print round(0.19945,4)
0.1994
For rounding of random samples of numbers between 0 and 1 ending in
'45', the error ratio is about 0.041. Here are a few more examples:
print
ammar azif wrote:
Hi,
Thanks for the help guys.
I have tried gui programming using Tkinter and use the Button class
which accepts the command argument which is a function object.
The question is how to send arguments if the function accepts arguments.
A common way to do this is to
Dick Moores wrote:
Yesterday I was shocked, SHOCKED, to discover that round() is
occasionally rounding incorrectly. For example,
print round(0.19945,4)
0.1994
For rounding of random samples of numbers between 0 and 1 ending in
'45', the error ratio is about 0.041. Here are a few more
On Mon, Mar 19, 2007 at 03:04:03AM -0700, Dick Moores wrote:
Yesterday I was shocked, SHOCKED, to discover that round() is
occasionally rounding incorrectly. For example,
Garbage In, Garbage Out :-)
Floating point numbers in Python (and other computer languages) are only
an approximation:
At 03:29 AM 3/19/2007, Kent Johnson wrote:
Dick Moores wrote:
Yesterday I was shocked, SHOCKED, to discover that round() is
occasionally rounding incorrectly. For example,
print round(0.19945,4)
0.1994
For rounding of random samples of numbers between 0 and 1 ending in
'45', the error ratio
ammar azif wrote:
Hi,
Thanks for answering .. btw what do you mean by explicit , helper
function? Can you explain about these functions?
I just mean, define an ordinary function of no arguments that does what
you want. For example, the calculator program I linked to has this Button:
Dick Moores wrote:
Kent, I did understand the points you made in that earlier thread.
However, I'm unhappy with
print round(0.19945,4)
0.1994
Am I the only one unhappy with this kind of rounding?
IMO you are chasing a non-problem. In real-world use, you would probably
not type in a
Hi,
I need to generate a table with different x,y,z values and write them to a
file:
10.171 -15.243 -2.558
9.837 -14.511 -1.923
-23.451 -13.870 51.507
I would like to write to the files as columns
10.171 -15.243 -2.558
9.837 -14.511 -1.923
-23.451 -13.870 51.507
0.233
On Mon, Mar 19, 2007 at 01:11:27PM +0100, Per Jr. Greisen wrote:
Hi,
I need to generate a table with different x,y,z values and write them to a
file:
10.171 -15.243 -2.558
9.837 -14.511 -1.923
-23.451 -13.870 51.507
I would like to write to the files as columns
10.171 -15.243
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Luke Paireepinart
Sent: Friday, March 16, 2007 8:31 PM
To: Tim Johnson
Cc: tutor@python.org
Subject: Re: [Tutor] cookie expiration date format
Tim Johnson wrote:
Hi:
I want to be able to
Dave Kuhlman wrote:
Try ljust and rjust. They are string functions/methods and are
described here: http://docs.python.org/lib/string-methods.html
Something like the following might work for you:
In [1]: value = 3.45678
In [2]: (%0.3f % value).rjust(10)
Out[2]: ' 3.457'
Thanks very much for your help.
I did indeed neglect to put the print in the code that I sent to the
list.
It appears that the step that is taking a long time, and that therefore
makes me think that the script is somehow broken, is creating a
dictionary of frequencies from the list of ngrams. To
On Monday 19 March 2007 15:33, Mike Hansen wrote:
Some of the modules in the Python standard library make things a little
more difficult than other languages.(Perl, Ruby, ...) This is a good
example of it. Are there any 3rd party modules that let you set the
expiration date to 'yesterday'?
Switanek, Nick wrote:
Thanks very much for your help.
I did indeed neglect to put the print in the code that I sent to the
list.
It appears that the step that is taking a long time, and that therefore
makes me think that the script is somehow broken, is creating a
dictionary of
Switanek, Nick wrote:
Great, Kent, thanks. I thought that I had to check in the .keys() to see
if the key was there.
It seems that the method you suggest will not work if I'm looking for a
value in the dictionary. If that's correct, is there a fast alternative
to searching through
On Mon, Mar 19, 2007 at 03:04:03AM -0700, Dick Moores wrote:
Yesterday I was shocked, SHOCKED, to discover that round() is
occasionally rounding incorrectly. For example,
print round(0.19945,4)
0.1994
.
.
.
Comments, Tutors? Am I way out in left field with this?
I suggest you might
-Original Message-
Date: Mon, 19 Mar 2007 11:53:06 -0400
From: Kent Johnson [EMAIL PROTECTED]
Subject: Re: [Tutor] Making table
To: tutor@python.org
Message-ID: [EMAIL PROTECTED]
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Dave Kuhlman wrote:
Try ljust and
Carroll, Barry wrote:
-Original Message-
Date: Mon, 19 Mar 2007 11:53:06 -0400
From: Kent Johnson [EMAIL PROTECTED]
Most string formatting conversions allow you to specify a width
directly. For example,
In [61]: value = 3.45678
In [63]: %10.3f % value
Out[63]: ' 3.457'
Kent
-Original Message-
From: Kent Johnson [mailto:[EMAIL PROTECTED]
Sent: Monday, March 19, 2007 12:59 PM
To: Carroll, Barry
Cc: tutor@python.org
Subject: Re: [Tutor] Making table
Carroll, Barry wrote:
-Original Message-
Date: Mon, 19 Mar 2007 11:53:06 -0400
From: Kent
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