davidf...@gmail.com writes:
> Has anyone on this list attempted to sandbox Python programs in a
> serious fashion? I'd be interested to hear your approach.
There is something like that for C++ and it is quite complicated:
https://github.com/Eelis/geordi
I expect that for Python you'd have to do
On Monday, May 25, 2015 at 10:16:02 PM UTC-7, Gary Herron wrote:
> It's probably not the square root that's causing the inaccuracies. In
> many other cases, and probably here also, it's the summing of two
> numbers that have vastly different values that loses precision. A
> demonstration:
>
>
Am 26.05.15 um 05:11 schrieb Steven D'Aprano:
mismatch after 3 trials
naive: 767.3916150255787
alternate: 767.3916150255789
hypot: 767.3916150255787
which shows that:
(1) It's not hard to find mismatches;
(2) It's not obvious which of the three methods is more accurate.
The main problem is
On 05/25/2015 09:13 PM, ravas wrote:
On Monday, May 25, 2015 at 8:11:25 PM UTC-7, Steven D'Aprano wrote:
Let's compare three methods.
...
which shows that:
(1) It's not hard to find mismatches;
(2) It's not obvious which of the three methods is more accurate.
Thank you; that is very helpful!
Oh ya... true >_<
Thanks :D
On Monday, May 25, 2015 at 9:43:47 PM UTC-7, Ian wrote:
> > def distance(A, B):
> > """
> > A & B are objects with x and y attributes
> > :return: the distance between A and B
> > """
> > dx = B.x - A.x
> > dy = B.y - A.y
> > a = min(dx, dy)
On Mon, May 25, 2015 at 1:21 PM, ravas wrote:
> I read an interesting comment:
> """
> The coolest thing I've ever discovered about Pythagorean's Theorem is an
> alternate way to calculate it. If you write a program that uses the distance
> form c = sqrt(a^2 + b^2) you will suffer from the lose
On Mon, May 25, 2015 at 8:17 PM, Steven D'Aprano wrote:
> PEP 8 states that developers should never invent their own dunder methods:
>
> __double_leading_and_trailing_underscore__ :
> "magic" objects or attributes that live in user-controlled
> namespaces. E.g. __init__ , __imp
On Monday, May 25, 2015 at 8:11:25 PM UTC-7, Steven D'Aprano wrote:
> Let's compare three methods.
> ...
> which shows that:
>
> (1) It's not hard to find mismatches;
> (2) It's not obvious which of the three methods is more accurate.
Thank you; that is very helpful!
I'm curious: what about the
On Tuesday, May 26, 2015 at 8:48:11 AM UTC+5:30, Steven D'Aprano wrote:
> On Tue, 26 May 2015 12:17 pm, Steven D'Aprano wrote:
>
> > In other words, dunder methods are reserved for use by the core developers
> > for the use of the Python interpreter.
>
> Er, that's easy to misinterpret. Let me tr
On Tue, 26 May 2015 12:17 pm, Steven D'Aprano wrote:
> In other words, dunder methods are reserved for use by the core developers
> for the use of the Python interpreter.
Er, that's easy to misinterpret. Let me try rewording:
You should not invent new dunder methods.
And if possible, you should
On Tue, 26 May 2015 05:21 am, ravas wrote:
> I read an interesting comment:
> """
> The coolest thing I've ever discovered about Pythagorean's Theorem is an
> alternate way to calculate it. If you write a program that uses the
> distance form c = sqrt(a^2 + b^2) you will suffer from the lose of ha
On Tue, May 26, 2015 at 12:24 PM, wrote:
> I believe it is not possible to limit such operations at the Python level.
> The best you could do is try replacing all the standard library modules, but
> that is again just a blacklist - it won't prevent a determined attacker from
> doing things lik
On Tuesday, May 26, 2015 at 7:47:41 AM UTC+5:30, Steven D'Aprano wrote:
> PEP 8 states that developers should never invent their own dunder methods:
>
> __double_leading_and_trailing_underscore__ :
> "magic" objects or attributes that live in user-controlled
> namespaces. E.g.
I am writing a web service that accepts Python programs as input, runs the
provided program with some profiling hooks, and returns various information
about the program's runtime behavior. To do this in a safe manner, I need to be
able to create a sandbox that restricts what the submitted Python
PEP 8 states that developers should never invent their own dunder methods:
__double_leading_and_trailing_underscore__ :
"magic" objects or attributes that live in user-controlled
namespaces. E.g. __init__ , __import__ or __file__ . Never
invent such names; only use th
>> Where do I find VS2008?
>
> Try this:
>
> https://www.microsoft.com/en-gb/download/details.aspx?id=44266
>
> TJG
Yes, that's it. Many thanks.
--
https://mail.python.org/mailman/listinfo/python-list
On 05/25/2015 08:13 PM, Chris Angelico wrote:
On Tue, May 26, 2015 at 4:42 AM, Alan Evangelista
wrote:
https://docs.python.org/2/library/gettext.html suggests that I use msgfmt.py
and pygettext.py, available
at Python Subversion ( http://svn.python.org/view/python/trunk/Tools/i18n/).
What licen
On Tue, May 26, 2015 at 4:42 AM, Alan Evangelista
wrote:
> https://docs.python.org/2/library/gettext.html suggests that I use msgfmt.py
> and pygettext.py, available
> at Python Subversion ( http://svn.python.org/view/python/trunk/Tools/i18n/).
> What license those executable
> scripts use? Are th
Looks like you are right.
Thanks for clarification.
Regards.
On May 25, 2015 10:02 PM, "Skip Montanaro" wrote:
> Looks like the file_obj is what you are reading locally, and
> magnum_opus.txt is the destination name on Dropbox.
>
> Skip
>
--
https://mail.python.org/mailman/listinfo/python-list
On Monday, May 25, 2015 at 1:27:43 PM UTC-7, Gary Herron wrote:
> This is a statement about floating point numeric calculations on a
> computer,. As such, it does apply to Python which uses the underlying
> hardware for floating point calculations.
>
> Validity is another matter. Where did yo
On Monday, May 25, 2015 at 1:27:24 PM UTC-7, Christian Gollwitzer wrote:
> Wrong. Just use the built-in function Math.hypot() - it should handle
> these cases and also overflow, infinity etc. in the best possible way.
>
> Apfelkiste:~ chris$ python
> Python 2.7.2 (default, Oct 11 2012, 20:14:37)
Am 25.05.15 um 21:21 schrieb ravas:
I read an interesting comment:
"""
The coolest thing I've ever discovered about Pythagorean's Theorem is an
alternate way to calculate it. If you write a program that uses the distance
form c = sqrt(a^2 + b^2) you will suffer from the lose of half of your
av
On 05/25/2015 12:21 PM, ravas wrote:
I read an interesting comment:
"""
The coolest thing I've ever discovered about Pythagorean's Theorem is an
alternate way to calculate it. If you write a program that uses the distance
form c = sqrt(a^2 + b^2) you will suffer from the lose of half of your
a
El 25/05/15 15:21, ravas escribió:
I read an interesting comment:
"""
The coolest thing I've ever discovered about Pythagorean's Theorem is an
alternate way to calculate it. If you write a program that uses the distance
form c = sqrt(a^2 + b^2) you will suffer from the lose of half of your
ava
Looks like the file_obj is what you are reading locally, and
magnum_opus.txt is the destination name on Dropbox.
Skip
--
https://mail.python.org/mailman/listinfo/python-list
I read an interesting comment:
"""
The coolest thing I've ever discovered about Pythagorean's Theorem is an
alternate way to calculate it. If you write a program that uses the distance
form c = sqrt(a^2 + b^2) you will suffer from the lose of half of your
available precision because the square r
Hi
as I can see dropbox.client.DropboxClient.put_file has four parameters:
"
full_path
The full path to upload the file to, including the file name. If the
destination folder does not yet exist, it will be created.
file_obj
A file-like object to upload. If you would like,
https://docs.python.org/2/library/gettext.html suggests that I use
msgfmt.py and pygettext.py, available
at Python Subversion (
http://svn.python.org/view/python/trunk/Tools/i18n/). What license those
executable
scripts use? Are they LGPL? I want to convert these executables to
Python modules a
On Sat, 23 May 2015 12:16:06 +0530, savitha devi wrote:
> I am developing a web scraper code using HTMLParser. I need to extract
> text/email address from java script with in the HTMLCode.I am beginner
> level in python coding and totally lost here. Need some help on this.
(a) Try a less ambitiou
On 25/05/2015 16:19, garyr wrote:
I posted this on the Anaconda NG but haven't gotten an answer.
I recently installed Python 2.7 using Miniconda. I'm now trying to build a
Python extension module. My setup.py file is:
from distutils.core import setup, Extension
module1 = Extension('pyssoun
I posted this on the Anaconda NG but haven't gotten an answer.
I recently installed Python 2.7 using Miniconda. I'm now trying to build a
Python extension module. My setup.py file is:
from distutils.core import setup, Extension
module1 = Extension('pyssound',
sources=['ssound.cpp', 'pysso
On Mon, May 25, 2015 at 09:33:06AM +, Donal Duane wrote:
>
> Hi Python Users,
>
> I was hoping you might be able to assist me with a query:
>
> 2 Questions:
>
>
> 1. Could Python 3.2, when compiled against OpenSSL 1.0.0j, be
> affected by the poodle bug?
> https://www.openssl.org/~bo
On Mon, May 25, 2015 at 7:33 PM, Donal Duane wrote:
>
> Hi Python Users,
>
> I was hoping you might be able to assist me with a query:
>
> 2 Questions:
>
> 1. Could Python 3.2, when compiled against OpenSSL 1.0.0j, be affected
> by the poodle bug? https://www.openssl.org/~bodo/ssl-poodle.pd
On Mon, May 25, 2015 at 7:39 PM, Laura Creighton wrote:
> What people need to understand is that unless you want to stamp out
> freedom altogether, there will be crime.
Or stamp out legislation altogether and have complete anarchy. There's
no such thing as crime among animals, because there's no
This showed up on Python list.
--- Forwarded Message
Return-Path:
Received: from mail.python.org (mail.python.org [82.94.164.166])
From: Donal Duane
To: "python-list@python.org"
Subject: Query on Python 3.2 and supported OpenSSL Versions
Cc: Alex Ying ,
Anthony McMahon
Hi Pytho
Hi Python Users,
I was hoping you might be able to assist me with a query:
2 Questions:
1. Could Python 3.2, when compiled against OpenSSL 1.0.0j, be affected by
the poodle bug? https://www.openssl.org/~bodo/ssl-poodle.pdf
2. If yes - are the following OpenSSL versions approve
In a message of Mon, 25 May 2015 09:57:28 +0300, Marko Rauhamaa writes:
>Certificates can be revoked, kinda, yes. Or more to the point,
>roadblocks could be put in the way of certifying some applicants.
>However, if that started happening, the OS and browser makers would
>simply drop the obnoxious
Chris Angelico :
> You've added extra levels of indirection, but it comes to the same
> thing. You're requiring that everyone who wants to conduct business on
> the internet (taking credit card numbers etc) has to go through four
> separate authentication processes, and a failure in any one of the
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