On Fri, Sep 19, 2014 at 3:45 PM, Steven D'Aprano
wrote:
> David Alban wrote:
>> *import sys*
>
> Um, how did you end up with leading and trailing asterisks? That's going to
> stop your code from running.
They're not part of the code, they're part of the mangling of the
formatting. So this isn't a
David Alban wrote:
> *#!/usr/bin/python*
>
> *import argparse*
> *import hashlib*
> *import os*
> *import re*
> *import socket*
> *import sys*
Um, how did you end up with leading and trailing asterisks? That's going to
stop your code from running.
> *from stat import **
"import *" is slightly
On Fri, Sep 19, 2014 at 3:15 PM, Steven D'Aprano
wrote:
> However, as far as I am aware, there are no built-ins that will fail that
> test, yet. Although the iteration order of dicts and sets is arbitrary, I
> think that (at least to date) it will be the same order every time you
> iterate over th
Roy Smith wrote:
> Is there anything which requires an iterator to be deterministic?
Absolutely not.
py> def spam():
... while True:
... n = random.randint(0, 10)
... s = ' '.join(['spam']*n)
... if not s:
... return
... yield s + '!'
...
py> for s
cool-RR wrote:
> My function gets an iterable of an unknown type. I want to check whether
> it's ordered. I could check whether it's a `set` or `frozenset`, which
> would cover many cases, but I wonder if I can do better. Is there a nicer
> way to check whether an iterable is ordered or not?
See
Ned Deily wrote:
> In article
> ,
> Larry Martell wrote:
>> Do you think I should install this update? Perhaps that would restore
>> whatever is missing.
>
> Yes. You should install the update in any case and it's unlikely to make
> the hashlib situation worse :=)
However, it is likely to make
On Fri, Sep 19, 2014 at 5:05 AM, Terry Reedy wrote:
> A couple more questions; after you run the file once, is there a warning
> above the first >>> prompt? If, after the program stop and you see a second
prompt and run
import sys; len(sys.modules), 'array' in sys.modules
> what is the
On Fri, Sep 19, 2014 at 9:52 AM, Roy Smith wrote:
> In article ,
> Chris Angelico wrote:
>
>> The one thing you can rely on (and therefore must comply with, when
>> you design an iterable) is that iteration will hit every element
>> exactly once.
>
> Does it actually say that somewhere? For exa
In article ,
Chris Angelico wrote:
> The one thing you can rely on (and therefore must comply with, when
> you design an iterable) is that iteration will hit every element
> exactly once.
Does it actually say that somewhere? For example:
for i in bag.pick_randomly_with_replacement(n=5):
p
Chris Angelico wrote:
On Fri, Sep 19, 2014 at 4:45 AM, Chris Kaynor wrote:
from stat import *
I was going to say the same thing, except that this module
specifically is documented as recommending that. I still don't like
"import *", but either this is a special case, or the docs need to be
c
In article
,
Larry Martell wrote:
> Do you think I should install this update? Perhaps that would restore
> whatever is missing.
Yes. You should install the update in any case and it's unlikely to make
the hashlib situation worse :=)
--
Ned Deily,
n...@acm.org
--
https://mail.python.org/
On 18.09.2014 23:39, Larry Martell wrote:
> $ python
> Python 2.7.2 (default, Oct 11 2012, 20:14:37)
> [GCC 4.2.1 Compatible Apple Clang 4.0 (tags/Apple/clang-418.0.60)] on darwin
> Type "help", "copyright", "credits" or "license" for more information.
import _hashlib
_hashlib.__file__
>
On Thu, Sep 18, 2014 at 2:49 PM, Christian Heimes wrote:
> On 18.09.2014 21:23, Larry Martell wrote:
>> On Thu, Sep 18, 2014 at 11:18 AM, Chris Angelico wrote:
>>> On Fri, Sep 19, 2014 at 3:07 AM, Steven D'Aprano
>>> wrote:
but I expect that's probably not where the problem lies. My *wild g
On Thu, Sep 18, 2014 at 2:44 PM, Ned Deily wrote:
> In article
> ,
> Larry Martell wrote:
>> On Thu, Sep 18, 2014 at 1:22 PM, Larry Martell
>> wrote:
>> > On Thu, Sep 18, 2014 at 11:07 AM, Steven D'Aprano
>> > wrote:
>> >> Larry Martell wrote:
>> >>> I am on a mac running 10.8.5, python 2.7
>>
On Thu, Sep 18, 2014 at 2:21 PM, John Gordon wrote:
> In Larry Martell
> writes:
>
>> It's failing on the 'import _sha' in hashlib.py:
>
>> 66 def __get_builtin_constructor(name):
>> 67try:
>> 68 if name in ('SHA1', 'sha1'):
>> 69 ->import _sha
>> 70
On 18.09.2014 21:23, Larry Martell wrote:
> On Thu, Sep 18, 2014 at 11:18 AM, Chris Angelico wrote:
>> On Fri, Sep 19, 2014 at 3:07 AM, Steven D'Aprano
>> wrote:
>>> but I expect that's probably not where the problem lies. My *wild guess* is
>>> that your system updated SSL, and removed some unde
In article
,
Larry Martell wrote:
> On Thu, Sep 18, 2014 at 1:22 PM, Larry Martell
> wrote:
> > On Thu, Sep 18, 2014 at 11:07 AM, Steven D'Aprano
> > wrote:
> >> Larry Martell wrote:
> >>> I am on a mac running 10.8.5, python 2.7
> >>> Suddenly, many of my scripts started failing with:
> >>>
In Larry Martell
writes:
> It's failing on the 'import _sha' in hashlib.py:
> 66 def __get_builtin_constructor(name):
> 67try:
> 68 if name in ('SHA1', 'sha1'):
> 69 ->import _sha
> 70 return _sha.new
> (Pdb) s
> ImportError: 'No module named _sh
David Alban wrote:
> *sep = ascii_nul*
>
> *print "%s%c%s%c%d%c%d%c%d%c%d%c%s" % ( thishost, sep, md5sum, sep,
> dev, sep, ino, sep, nlink, sep, size, sep, file_path )*
file_path may contain newlines, therefore you should probably use "\0" to
separate the records. The other fields may n
On Thu, 18 Sep 2014 15:05:53 -0400, Terry Reedy
wrote:
>On 9/18/2014 11:24 AM, Seymore4Head wrote:
>> On Wed, 17 Sep 2014 23:50:56 -0400, Terry Reedy
>> wrote:
>
>>> My question was "How do you start Idle?"
>>> (I can make a difference.)
>>
>> The way I start IDLE is to go to my programs folder
On Thu, Sep 18, 2014 at 1:22 PM, Larry Martell wrote:
> On Thu, Sep 18, 2014 at 11:07 AM, Steven D'Aprano
> wrote:
>> Larry Martell wrote:
>>
>>> I am on a mac running 10.8.5, python 2.7
>>>
>>> Suddenly, many of my scripts started failing with:
>>>
>>> ValueError: unsupported hash type sha1
>> [
On Thu, Sep 18, 2014 at 11:07 AM, Steven D'Aprano
wrote:
> Larry Martell wrote:
>
>> I am on a mac running 10.8.5, python 2.7
>>
>> Suddenly, many of my scripts started failing with:
>>
>> ValueError: unsupported hash type sha1
> [...]
>> This just started happening yesterday, and I cannot think o
On Thu, Sep 18, 2014 at 11:18 AM, Chris Angelico wrote:
> On Fri, Sep 19, 2014 at 3:07 AM, Steven D'Aprano
> wrote:
>> but I expect that's probably not where the problem lies. My *wild guess* is
>> that your system updated SSL, and removed some underlying SHA-1 library
>> needed by hashlib. SHA-1
On Thu, Sep 18, 2014 at 10:47 AM, John Gordon wrote:
> In Larry Martell
> writes:
>
>> Googling this showed that it's an issue with hashlib with a common
>> cause being a file called hashlib.py that gets in the way of the
>> interpreter finding the standard hashlib module, but that doesn't seem
On 9/18/2014 11:24 AM, Seymore4Head wrote:
On Wed, 17 Sep 2014 23:50:56 -0400, Terry Reedy
wrote:
My question was "How do you start Idle?"
(I can make a difference.)
The way I start IDLE is to go to my programs folder and right click on
file.py in the directory and select "edit with IDLE".
On Thursday, September 18, 2014 9:38:00 AM UTC-7, Chris Angelico wrote:
> On Fri, Sep 19, 2014 at 2:19 AM, wrote:
> > So: there are way too many ways to open a simple file to read or write a
> > bit of text (or binary):
> > open()
>
> Personally, I'd just use this, all the way through - and not
On Fri, Sep 19, 2014 at 4:45 AM, Chris Kaynor wrote:
>> from stat import *
>
>
> Generally, from import * imports are discouraged as they tend to populate
> your namespace and have issues with accidentally overriding imported
> functions/variables. Generally, its more Pythonic to use the other imp
On Fri, Sep 19, 2014 at 4:11 AM, David Alban wrote:
> i'm a long time perl programmer who is learning python. i'd be interested
> in any comments you might have on my code below. feel free to respond
> privately if you prefer. i'd like to know if i'm on the right track.
Sure! Happy to help out
On Thu, Sep 18, 2014 at 11:11 AM, David Alban wrote:
> *#!/usr/bin/python*
>
> *import argparse*
> *import hashlib*
> *import os*
> *import re*
> *import socket*
> *import sys*
>
> *from stat import **
>
Generally, from import * imports are discouraged as they tend to populate
your namespace and
greetings,
i'm a long time perl programmer who is learning python. i'd be interested
in any comments you might have on my code below. feel free to respond
privately if you prefer. i'd like to know if i'm on the right track. the
program works, and does what i want it to do. is there a differen
On Fri, Sep 19, 2014 at 3:07 AM, Steven D'Aprano
wrote:
> but I expect that's probably not where the problem lies. My *wild guess* is
> that your system updated SSL, and removed some underlying SHA-1 library
> needed by hashlib. SHA-1 is pretty old, and there is now a known attack on
> it, so some
Larry Martell wrote:
> I am on a mac running 10.8.5, python 2.7
>
> Suddenly, many of my scripts started failing with:
>
> ValueError: unsupported hash type sha1
[...]
> This just started happening yesterday, and I cannot think of anything
> that I've done that could cause this.
Ah, the ol' "I
On Thu, Sep 18, 2014 at 10:35 AM, wrote:
> It's be nice if Python's math module did more than simply wrap the default i
> implementation of the underlying C lib -- it's gotten better over the years
> (Inf and NaN used to be really hard to get), but still not quite what it
> could be.
I think
On 2014-09-18 08:58, Roy Smith wrote:
> I suspect what he meant was "How can I tell if I'm iterating over
> an ordered collection?", i.e. iterating over a list vs. iterating
> over a set.
>
> list1 = [item for item in i]
> list2 = [item for item in i]
>
> am I guaranteed that list1 == list2? It
In Larry Martell
writes:
> Googling this showed that it's an issue with hashlib with a common
> cause being a file called hashlib.py that gets in the way of the
> interpreter finding the standard hashlib module, but that doesn't seem
> to be the case:
Perhaps hashlib imports some other module
On Wednesday, September 17, 2014 11:22:42 PM UTC-7, wxjm...@gmail.com wrote:
> >>> 1e300*1e300
>
> inf
>
> >>> exp(1e300)
>
> Traceback (most recent call last):
>
> File "", line 1, in
>
> OverflowError: math range error
FWIW, numpy is a bit more consistent:
In [89]: numpy.exp(1e300)
Out[
On Fri, Sep 19, 2014 at 2:19 AM, wrote:
> So: there are way too many ways to open a simple file to read or write a bit
> of text (or binary):
>
> open()
Personally, I'd just use this, all the way through - and not importing
from io, either. But others may disagree.
Be clear about what's text a
I am on a mac running 10.8.5, python 2.7
Suddenly, many of my scripts started failing with:
ValueError: unsupported hash type sha1
Googling this showed that it's an issue with hashlib with a common
cause being a file called hashlib.py that gets in the way of the
interpreter finding the standard
Folks,
I'm in the position of teaching Python to beginners (beginners to Python,
anyway).
I'm teaching Python2 -- because that is still what most of the code "in the
wild" is in. I do think I"ll transition to Python 3 fairly soon, as it's not
too hard for folks to back-port their knowledge, bu
On Thu, Sep 18, 2014 at 9:30 AM, Juan Christian
wrote:
> I'll write a python (Python 3.4.1) script to fetch for new data (topics)
> from this page (http://steamcommunity.com/app/440/tradingforum)
> continuously.
>
> All the topics follow this structure: href="http://steamcommunity.com/app/440/tra
On Wed, 17 Sep 2014 23:50:56 -0400, Terry Reedy
wrote:
>On 9/17/2014 9:34 PM, Seymore4Head wrote:
>> On Wed, 17 Sep 2014 18:56:47 -0400, Terry Reedy
>
>>> A little digging with Idle's grep (Find in Files) shows that the message
>>> is produced by this code in idlelib/PyShell.py, about 825.
>>>
>
On Thu, Sep 18, 2014 at 3:22 AM, wrote:
> Hey list
>
> I need to install a private copy of Python on Windows 7 and 8, for use only
> by one specific tool. The install should happen as part of the installation
> of the tool.
>
> I can control TARGETDIR and extensions (via ADDLOCAL) but I'm faili
On 2014-09-18, Steven D'Aprano wrote:
> Marko Rauhamaa wrote:
>
>> Maybe IEEE had some specific numeric algorithms in mind when it
>> introduced inf and nan. However, I have a feeling an exception would be
>> a sounder response whenever the arithmetics leaves the solid ground.
>
> I'm afraid that
On 9/18/2014 8:58 AM, Roy Smith wrote:
I suspect what he meant was "How can I tell if I'm iterating over an
ordered collection?", i.e. iterating over a list vs. iterating over a
set.
One can check whether the iterable is a tuple, list, range, or tuple or
list iterator (the latter not being re
On Thu, Sep 18, 2014 at 10:58 PM, Roy Smith wrote:
> I suspect what he meant was "How can I tell if I'm iterating over an
> ordered collection?", i.e. iterating over a list vs. iterating over a
> set.
Right, which is what I meant by asking if the order mattered. When you
iterate over a set, you'l
I'll write a python (Python 3.4.1) script to fetch for new data (topics)
from this page (http://steamcommunity.com/app/440/tradingforum)
continuously.
All the topics follow this structure: http://steamcommunity.com/app/440/tradingforum/TOPIC_ID/";>
It will work like that: I'll get the last topic
In article ,
Chris Angelico wrote:
> On Thu, Sep 18, 2014 at 9:55 PM, cool-RR wrote:
> > My function gets an iterable of an unknown type. I want to check whether
> > it's ordered. I could check whether it's a `set` or `frozenset`, which
> > would cover many cases, but I wonder if I can do bet
On Thu, Sep 18, 2014 at 9:55 PM, cool-RR wrote:
> My function gets an iterable of an unknown type. I want to check whether it's
> ordered. I could check whether it's a `set` or `frozenset`, which would cover
> many cases, but I wonder if I can do better. Is there a nicer way to check
> whether
My function gets an iterable of an unknown type. I want to check whether it's
ordered. I could check whether it's a `set` or `frozenset`, which would cover
many cases, but I wonder if I can do better. Is there a nicer way to check
whether an iterable is ordered or not?
Thanks,
Ram.
--
https:
On 18/09/2014 09:57, ap501...@gmail.com wrote:
I am looking for some tips as to how Python could be used to solve a simple
business problem involving consolidation of financial data across a company
with a number of business units rolling up to a department and departments
rolling up to the w
Marko Rauhamaa wrote:
> Maybe IEEE had some specific numeric algorithms in mind when it
> introduced inf and nan. However, I have a feeling an exception would be
> a sounder response whenever the arithmetics leaves the solid ground.
I'm afraid that you're missing the essential point of INF and qu
On Thu, Sep 18, 2014 at 6:57 PM, wrote:
> Required to find:
>
> (1)Income, Expenses and Surplus consolidated for all units within a
> Department; and
> (2)Income, Expenses and Surplus consolidated for all departments within the
> company.
>
> I would welcome any help in expressing this problem
I am looking for some tips as to how Python could be used to solve a simple
business problem involving consolidation of financial data across a company
with a number of business units rolling up to a department and departments
rolling up to the whole organization.
Company = Department(1)+Depar
On Thursday, September 18, 2014 6:12:08 AM UTC+3, Steven D'Aprano wrote:
> cool-RR wrote:
> > Chris, why is this invariant `div*y + mod == x` so important? Maybe it's
> > more important to return a mathematically reasonable result for the the
> > floor-division result than to maintain this invarian
Hey list
I need to install a private copy of Python on Windows 7 and 8, for use only by
one specific tool. The install should happen as part of the installation of the
tool.
I can control TARGETDIR and extensions (via ADDLOCAL) but I'm failing to
install "just for this user".
I've been trying
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