On 09/05/2011 10:57 PM, xyz wrote:
hi all:
As we know , 1.1 * 1.1 is 1.21 .
But in python ,I got following :
1.1 * 1.1
1.2102
why python get wrong result? Who can tell me where's the 0.0002
from?
It's not a python errorIt's the nature of floating point arithm
> Jon Redgrave writes:
> It seems unreasonably hard to write simple one-line unix command line
> filters in python:
> eg: ls | python -c " print x.upper()"
[...]
> Is there a better solution - if not is this worth a PEP?
Have you looked at PyP (http://code.google.com/p/pyp)?
John
--
htt
On Tue, 6 Sep 2011 03:57 pm xyz wrote:
> hi all:
>
> As we know , 1.1 * 1.1 is 1.21 .
> But in python ,I got following :
>
1.1 * 1.1
> 1.2102
The problem is that 1.1 is a *decimal* number, but computers use *binary*,
and it is impossible to express 1.1 exactly as a binary num
Jon Redgrave wrote:
> It seems unreasonably hard to write simple one-line unix command line
> filters in python:
>
> eg: ls | python -c " print x.upper()"
>
> to get at sys.stdin or similar needs an import, which makes a
> subsequent for-loop illegal.
> python -c "import sys; for x in sys.stdin
i found stange thing that i can't solve
import os
import csv
for name in os.listdir('/tmp/quote/'):
filename='/tmp/quote/'+name
file = open(filename,'r')
file.readline()
for row in csv.reader(file):
print row[0], row[1], row[2], row[3],row[4], row[5], r
Hi,
I am wondering why relative seeks fail on string IO in Python 3.2
Example :
from io import StringIO
txt = StringIO('Favourite Worst Nightmare')
txt.seek(8) # no problem with absolute seek
but
txt.seek(2,1) # 2 characters from current position
raises "IOError: Can't do nonz
2011/9/6 守株待兔 <1248283...@qq.com>:
> file = open(filename,'r')
> when i add (date,open,high,low,close,vol,adjclose) = (row[0], row[1],
You're assigning to the name "open", which is shadowing the built-in
of the same name. The second time through the loop, you're not calling
the usual open
On Dienstag 06 September 2011, 守株待兔 wrote:
> (date,open,high,low,close,vol,adjclose) = (row[0],
> row[1], row[2], row[3],row[4], row[5], row[6]) print
> row[0], row[1], row[2], row[3],row[4], row[5], row[6]
>
>
> the wrong output is :
> file = open(filename,'r')
> TypeError: 's
Gary Herron wrote:
> (But try:
>print 1.1*1.1
> and see that the print statement does hide the roundoff error from you.)
That varies according to the version of Python you are using. On my system:
Python 2.7 (r27:82525, Jul 4 2010, 09:01:59) [MSC v.1500 32 bit (Intel)]
on win32
Type "help
Hi,
I am musing on how to write portable Python3 code which would
take advantage of the standard locale module.
For instance, it would be very nice if we could say something like:
# does not work!
myISOCountryCode='hr'
locale.setlocale(locale.LC_ALL, (myISOCountryCode,
locale.getpreferredencodin
Am 06.09.2011 07:57 schrieb xyz:
hi all:
As we know , 1.1 * 1.1 is 1.21 .
But in python ,I got following :
1.1 * 1.1
1.2102
why python get wrong result? Who can tell me where's the 0.0002
from?
1.1 does not fit in a binary floating point number. It is approximate
On 06/09/11 11:59, ssegvic wrote:
> Hi,
>
> I am musing on how to write portable Python3 code which would
> take advantage of the standard locale module.
>
> For instance, it would be very nice if we could say something like:
>
> # does not work!
Doesn't it?
> myISOCountryCode='hr'
This is a l
On 6/09/11 01:18:37, Steven D'Aprano wrote:
Terry Reedy wrote:
The doc says "-c
Execute the Python code in command. command can be one or more
statements separated by newlines,"
However, I have no idea how to put newlines into a command-line string.
I imagine that it depends on the shell you
On Sep 5, 3:51 pm, "Fokke Nauta" wrote:
>
> Hi Becky,
>
> I tried it straight away:
> directory=D:\Webdav\
> directory=D:/Webdav/
>
> Didn't work, in both cases the same error "fshandler:get_data: \Webdav not
> found".
>
> I have the opinion that my WebDAV installation is at fault. The database is
Hi,
Please consider a beginner's query -
I am 9 -years experienced in C++.
Currently working in Automation domain.
Will Python help me to work in Automation/Embedded domain ?
Your advice is highly appreciated.
Please reply.
Thanks a lot,
Santosh.
--
http://mail.python.org/mailman/listinfo/py
On 05-Sep-11 18:00 PM, Python Fiddle Admin wrote:
Python has been ported to the web browser at pythonfiddle.com. Python
Fiddle can import snippets of code that you are reading on a web page
and run them in the browser. It supports a few popular libraries.
Another common usage is to post code on
On Sep 5, 11:00 pm, Python Fiddle Admin
wrote:
> Python has been ported to the web browser at pythonfiddle.com. Python
> Fiddle can import snippets of code that you are reading on a web page
> and run them in the browser. It supports a few popular libraries.
>
> Another common usage is to post cod
Is there an equivalent to os.path.walk() for HDF5 file trees accessed
through h5py?
Thanks!
Alex van der Spek
--
http://mail.python.org/mailman/listinfo/python-list
Is there anything I need to do to create an instance of a class?
I have this simple code(The class is in a package core.fleet):
class Fleet(object):
def __init__(self):
""" no-arg constructor """
def fleet_file_upload(self, filename, type=None):
if type == 'user':
2011/9/6 ssegvic :
> Hi,
>
> I am musing on how to write portable Python3 code which would
> take advantage of the standard locale module.
>
> For instance, it would be very nice if we could say something like:
>
> # does not work!
> myISOCountryCode='hr'
> locale.setlocale(locale.LC_ALL, (myISOCou
This is just an attempt to put the
http://groups.google.com/group/comp.lang.python/browse_thread/thread/a008af1ac2968833#
discussion at a correct level.
With Python 2.7 a new float number representation (the David Gay's
algorithm)
has been introduced. If this is well honored in Python 2.7, it
seem
I was able to get this solved by calling class like this:
>>> from core.fleet import Fleet
>>> f = Fleet()
Thanks to a thread from the list titled "TypeError: 'module' object is not
callable"
On Tue, Sep 6, 2011 at 2:02 PM, Kayode Odeyemi wrote:
> Is there anything I need to do to create an in
On 2011-09-06 15:42, Kayode Odeyemi wrote:
I was able to get this solved by calling class like this:
>>> from core.fleet import Fleet
>>> f = Fleet()
Thanks to a thread from the list titled "TypeError: 'module' object is
not callable"
Or you can also do this:
import core.fleet # import modul
On Tue, Sep 6, 2011 at 3:18 PM, Laszlo Nagy wrote:
> On 2011-09-06 15:42, Kayode Odeyemi wrote:
>
>> I was able to get this solved by calling class like this:
>>
>> >>> from core.fleet import Fleet
>> >>> f = Fleet()
>>
>> Thanks to a thread from the list titled "TypeError: 'module' object is not
"becky_lewis" wrote in message
news:f5b9ec16-de9a-4365-81a8-860dc27a9...@d25g2000yqh.googlegroups.com...
On Sep 5, 3:51 pm, "Fokke Nauta" wrote:
>
> Hi Becky,
>
> I tried it straight away:
> directory=D:\Webdav\
> directory=D:/Webdav/
>
> Didn't work, in both cases the same error "fshandler:get_
On 6 ruj, 13:16, Thomas Jollans wrote:
> > locale.setlocale(locale.LC_ALL, (myISOCountryCode,
> > locale.getpreferredencoding()))
>
> As far as I can tell, this does work. Can you show us a traceback?
Sorry, I was imprecise.
I wanted to say that the above snippet
does not work both on Windows an
On 6/09/11 16:18:32, Laszlo Nagy wrote:
On 2011-09-06 15:42, Kayode Odeyemi wrote:
I was able to get this solved by calling class like this:
>>> from core.fleet import Fleet
>>> f = Fleet()
Thanks to a thread from the list titled "TypeError: 'module' object is
not callable"
Or you can also do
On 6 ruj, 15:13, Vlastimil Brom wrote:
> There may be some differences btween OSes end the versions, but using
> python 2.7 and 3.2 on Win XP and Win7 (Czech)
> I get the following results for setlocale:
>
> >>> locale.setlocale(locale.LC_ALL,'Croatian')
>
> 'Croatian_Croatia.1250'>>> locale.getl
On 06/09/11 16:46, ssegvic wrote:
> For the moment, I only wish to properly sort a Croatian text file
> both on Windows and Linux (I am a cautious guy, I like reachable
> goals).
> When the locale is properly set, sorting works like a charm
> with mylist.sort(key=locale.strxfrm).
The problem with
Thomas Rachel wrote:
> Now if you multiply two values with an error, the error also propagates
> into the result - PLUs the result can have its own error source - in the
> same order of magnitude.
>
> (a+e) * (a+e) = a*a + 2*a*e + e*e. So your new error term is 2*a*e + e*e
> or (2*a + e) * e.
Yo
I have used Python for some time and ran a windows build-bot for a bit.
This morning, I told a fellow developer "There should be only one obvious
way to do it." and then I proceeded to forward him to the Zen of Python and
sent him a link to:
http://www.python.org/dev/peps/pep-0020/
I noticed that
On Tue, Sep 6, 2011 at 10:17 AM, Joseph Armbruster
wrote:
> I have used Python for some time and ran a windows build-bot for a bit.
> This morning, I told a fellow developer "There should be only one obvious
> way to do it." and then I proceeded to forward him to the Zen of Python and
> sent him
:
On 6 September 2011 12:17, Joseph Armbruster wrote:
> I noticed that it says only 19 of 20 have been written down. Which one was
> not written down?
The last one.
-[]z.
--
http://mail.python.org/mailman/listinfo/python-list
Joseph Armbruster wrote:
> I have used Python for some time and ran a windows build-bot for a bit.
> This morning, I told a fellow developer "There should be only one obvious
> way to do it." and then I proceeded to forward him to the Zen of Python
> and sent him a link to:
> http://www.python.or
Hi,
I'm a Python long-timer, but I've never had to use tools like Matplotlib &
others before.
Now, for my work, I would need to learn the basics fast, for a one-time
quick-n-dirty job.
This involves a graphic comparison of RFC1918 IP subnets allocation across
several networks.
The idea is to
"Dennis Lee Bieber" wrote in message
news:mailman.809.1315328739.27778.python-l...@python.org...
> On Tue, 6 Sep 2011 16:46:17 +0200, "Fokke Nauta"
> declaimed the following in
> gmane.comp.python.general:
>
>
>> ---
>> Python 2.7.2 (default, Jun 12 2011,
I build on the suggestion by rantingrick, but took it in a bit
different direction.
I now have working code that performs reasonable. The reason for
the class lines (as opposed to just a function) is b/c font.measure
appears not that fast. So I want to remember between different
calls to lines.
On 9/6/2011 3:18 AM, Pierre Quentel wrote:
I am wondering why relative seeks fail on string IO in Python 3.2
Good question.
from io import StringIO
txt = StringIO('Favourite Worst Nightmare')
txt.seek(8) # no problem with absolute seek
Please post code without non-code inden
Thomas Jollans wrote:
> It looks like you don't actually care about the encoding: in your first
> example, you use the default system encoding, which you do not control,
> and in your second example, you're using two different encodings on the
> two platforms. So why do you care whether or not t
Hmm, i can replace all that code with this...
#
# Easy_as.py
#
import Tkinter as tk
from ScrolledText import ScrolledText
import tkFont
import random
# Create some puesdo data.
data = [
'{0}.{1}'.format(x, 'blah'*random.randint(4, 50))
for x in range(100)
]
##print data
# Create the ma
Hi,
If I want to use the 'os.path' module, it's enought to import 'os':
import os
if os.path.isfile('/usr/bin/bash'):
print 'got it'
In other source codes I noticed that people write 'import os.path' in
this case. Which is better practice?
Thanks,
Laszlo
--
http://mail.python.org/mailman/
Or if you prefer the alternating background approach...
##
# Easy_as.py
##
import Tkinter as tk
from ScrolledText import ScrolledText
import tkFont
import random
END = 'end'
INSERT = 'insert'
#
# Create some puesdo data.
data = [
'{0}.{1}'.format(x, 'blah'*rand
On Tue, Sep 6, 2011 at 3:25 PM, Jabba Laci wrote:
> Hi,
>
> If I want to use the 'os.path' module, it's enought to import 'os':
>
> import os
> if os.path.isfile('/usr/bin/bash'):
> print 'got it'
>
> In other source codes I noticed that people write 'import os.path' in
> this case. Which is be
I am trying to write a program which can email file's content using
smtplib. I am getting following error while using Python 2.6.6
version.
{{{
File "./killed_jobs.py", line 88, in sendmail
msg = MIMEText(ipfile.read, 'plain')
File "/home/ssp/sge/python/2.6.6/lib/python2.6/email/mime/text.py",
rantingrick writes:
> Hmm, i can replace all that code with this...
Because I stupidly forgot to repeat the original problem I had, and my
code doesn't show it (and doesn't show the correct use of the function I
wrote). The code shows that I now know how to compute the number of
lines and item
On Sep 6, 1:27 pm, Fred Pacquier wrote:
> I'm a Python long-timer, but I've never had to use tools like Matplotlib &
> others before.
>
> Now, for my work, I would need to learn the basics fast, for a one-time
> quick-n-dirty job.
##
## START SCRIPT ##
##
#
# Easy_
On 06/09/2011 22:52, neubyr wrote:
I am trying to write a program which can email file's content using
smtplib. I am getting following error while using Python 2.6.6
version.
{{{
File "./killed_jobs.py", line 88, in sendmail
msg = MIMEText(ipfile.read, 'plain')
File "/home/ssp/sge/python/2
On Sep 6, 5:00 pm, Bart Kastermans wrote:
> rantingrick writes:
> > Hmm, i can replace all that code with this...
>
> Because I stupidly forgot to repeat the original problem I had, and my
> code doesn't show it (and doesn't show the correct use of the function I
> wrote).
Oh NOW i see! This new
On Sep 6, 5:40 pm, rantingrick wrote:
> On Sep 6, 5:00 pm, Bart Kastermans wrote:
> Take your input data and replace ALL single newlines with null strings
CORRECTION: Take your input data and replace ALL single newlines with
A SINGLE SPACE
--
http://mail.python.org/mailman/listinfo/python-list
rantingrick writes:
> On Sep 6, 5:00 pm, Bart Kastermans wrote:
>> rantingrick writes:
>> > Hmm, i can replace all that code with this...
>>
>> Because I stupidly forgot to repeat the original problem I had, and my
>> code doesn't show it (and doesn't show the correct use of the function I
>> w
Zero Piraeus writes:
> On 6 September 2011 12:17, Joseph Armbruster
> wrote:
> > I noticed that it says only 19 of 20 have been written down. Which
> > one was not written down?
>
> The last one.
I always thought it was the first one. Or the 6.25th one, I forget.
--
\“When in doubt
On Sun, 04 Sep 2011 07:22:07 -0700, Erik wrote:
> I'm trying to do the following:
> os.chroot("/tmp/my_chroot")
> p = Popen("/bin/date", stdin=PIPE, stdout=PIPE, stderr=PIPE)
> but the Popen call is dying with the following exception:
> LookupError: unknown encoding: string-escape
>
> Am I mi
On 7/09/2011 7:47 AM, Ian Kelly wrote:
On Tue, Sep 6, 2011 at 3:25 PM, Jabba Laci wrote:
Hi,
If I want to use the 'os.path' module, it's enought to import 'os':
import os
if os.path.isfile('/usr/bin/bash'):
print 'got it'
In other source codes I noticed that people write 'import os.path'
On 07/09/2011 01:36, Ben Finney wrote:
Zero Piraeus writes:
On 6 September 2011 12:17, Joseph Armbruster wrote:
I noticed that it says only 19 of 20 have been written down. Which
one was not written down?
The last one.
I always thought it was the first one. Or the 6.25th one, I forget.
You sure it wasn't the invisible one? you know the one in the white
text that blends into the background?
On Tue, Sep 6, 2011 at 9:25 PM, MRAB wrote:
> On 07/09/2011 01:36, Ben Finney wrote:
>>
>> Zero Piraeus writes:
>>
>>> On 6 September 2011 12:17, Joseph Armbruster
>>> wrote:
I no
Hello:
I've got a bit of time on my hands, so I'm curious what sorts of
projects there are that people needs help with. I'd like to choose
something that doesn't have a ton of red tape, but is stable, which is
why I ask here instead of just Googling open source projects. My main
interests lie
CA, Did you respond to my off-NG msg about FORTRAN? Perhaps it's caught
in my spam on the net.
--
http://mail.python.org/mailman/listinfo/python-list
On Wed, Sep 7, 2011 at 12:43 PM, W. eWatson wrote:
> CA, Did you respond to my off-NG msg about FORTRAN? Perhaps it's caught in
> my spam on the net.
No, I didn't; as someone else pointed out, you'll get better results
asking on a dedicated Fortran list.
ChrisA
--
http://mail.python.org/mailman
On Tue, Sep 6, 2011 at 5:25 PM, Jabba Laci wrote:
> Hi,
>
> If I want to use the 'os.path' module, it's enought to import 'os':
>
> import os
> if os.path.isfile('/usr/bin/bash'):
> print 'got it'
>
> In other source codes I noticed that people write 'import os.path' in
> this case. Which is be
On Sep 6, 6:37 am, jmfauth wrote:
> This is just an attempt to put
> thehttp://groups.google.com/group/comp.lang.python/browse_thread/thread/...
> discussion at a correct level.
>
> With Python 2.7 a new float number representation (the David Gay's
> algorithm)
> has been introduced. If this is w
On 9/3/2011 3:03 AM, Carl Banks wrote:
On Friday, September 2, 2011 11:43:53 AM UTC-7, Tim Arnold wrote:
Hi,
I'm using the 'with' context manager for a sqlite3 connection:
with sqlite3.connect(my.database,timeout=10) as conn:
conn.execute('update config_build set datetime=?,result
On Wed, 7 Sep 2011 02:07 am Thomas 'PointedEars' Lahn wrote:
> Thomas Rachel wrote:
>
>> Now if you multiply two values with an error, the error also propagates
>> into the result - PLUs the result can have its own error source - in the
>> same order of magnitude.
>>
>> (a+e) * (a+e) = a*a + 2*a
On 9/6/2011 7:48 PM, Chris Angelico wrote:
On Wed, Sep 7, 2011 at 12:43 PM, W. eWatson wrote:
CA, Did you respond to my off-NG msg about FORTRAN? Perhaps it's caught in
my spam on the net.
No, I didn't; as someone else pointed out, you'll get better results
asking on a dedicated Fortran list.
On Sep 6, 2:27 pm, Fred Pacquier wrote:
> Hi,
>
> I'm a Python long-timer, but I've never had to use tools like Matplotlib &
> others before.
>
> Now, for my work, I would need to learn the basics fast, for a one-time
> quick-n-dirty job.
>
> This involves a graphic comparison of RFC1918 IP subnet
On 7 sep, 05:58, casevh wrote:
> ...
>
> Also note that 1.1 * 1.1 is not the same as 1.21.
>
> >>> (1.1 * 1.1).as_integer_ratio()
>
> (5449355549118301, 4503599627370496)>>> (1.21).as_integer_ratio()
>
> (1362338887279575, 1125899906842624)
>
> This doesn't explain why 2.7.2 displayed a differen
> Now, for my work, I would need to learn the basics fast, for a one-time
> quick-n-dirty job.
>
> This involves a graphic comparison of RFC1918 IP subnets allocation across
> several networks.
>
> The idea is to draw parallel lines, with segments (subnets) coloured green,
> yellow or red depending
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