On 12/05/2011 02:11 AM, Suresh Sharma wrote:
Hello All,
I am new to python and i have stuck up on a particular issue with classes,
i understand this might be a very dumb question but please help me out.
I have created two classes and whenever i try to print the objects i get
this message but not
Hello All,
I am new to python and i have stuck up on a particular issue with classes,
i understand this might be a very dumb question but please help me out.
I have created two classes and whenever i try to print the objects i get
this message but not the data, __main__.cards instance at (mem
Two methods:
1) If you need your hash only once in an infrequent while, then save
the elements in a list, appending as needed, and sort prior to
hashing, as needed
2) If you need your hash more often, you could keep your elements in a
treap or red-black tree; these will maintain sortedness through
Ethan Furman writes:
> Lie Ryan wrote:
> > trying not to be rude, but the more you talk, the more I"m convince
> > that you're trolling. Welcome to my killfile.
>
> I think he's a bot, and he's been in my killfile for a while now.
Having a ludicrous name doesn't help, and is part of what droppe
Yes. I sent a mail earlier asking such and it was bounced. I'm one
email from also blocking this fellow.
On Mon, Dec 5, 2011 at 12:59 PM, Lie Ryan wrote:
> On 12/05/2011 11:52 AM, 8 Dihedral wrote:
>>
>> On Monday, December 5, 2011 7:24:49 AM UTC+8, Ian wrote:
>>>
>>> On Sun, Dec 4, 2011 at 4
Lie Ryan wrote:
On 12/05/2011 11:52 AM, 8 Dihedral wrote:
On Monday, December 5, 2011 7:24:49 AM UTC+8, Ian wrote:
On Sun, Dec 4, 2011 at 4:17 PM, 8 Dihedral
wrote:
Please explain what you think a hash function is, then. Per
Wikipedia, "A hash function is any algorithm or subroutine
Dihedral, you're back to double posting. Please stop. Send to the mailing
list, or to the newsgroup, it doesn't matter. But don't send to both.
Further comments below.
On Sun, 04 Dec 2011 16:52:14 -0800, 8 Dihedral wrote:
> If v is a tuple or a list then a dictionary in python can replace
On 12/05/2011 11:52 AM, 8 Dihedral wrote:
On Monday, December 5, 2011 7:24:49 AM UTC+8, Ian wrote:
On Sun, Dec 4, 2011 at 4:17 PM, 8 Dihedral
wrote:
Please explain what you think a hash function is, then. Per
Wikipedia, "A hash function is any algorithm or subroutine that maps
large
On Monday, December 5, 2011 7:24:49 AM UTC+8, Ian wrote:
> On Sun, Dec 4, 2011 at 4:17 PM, 8 Dihedral
> wrote:
> >> Please explain what you think a hash function is, then. Per
> >> Wikipedia, "A hash function is any algorithm or subroutine that maps
> >> large data sets to smaller data sets,
On 12/4/2011 6:17 PM, 8 Dihedral wrote:
In python the (k,v) pair in a dictionary k and v can be both an objects.
v can be a tuple or a list.
In Python, everything is an object. *tuple* and *list* are subclasses of
*object*. The value v for a dict can be any object, and must be an object.
Hi all,
I've written a Python API for the Windows Azure Service Management web-
service. Requests against the web-service are HTTPS with a client
certificate used for authentication. This works fine with CPython
(tested with 2.6 and 2.7) on Linux, but something is amiss with the
SSL connection wit
On Sun, Dec 4, 2011 at 4:17 PM, 8 Dihedral
wrote:
>> Please explain what you think a hash function is, then. Per
>> Wikipedia, "A hash function is any algorithm or subroutine that maps
>> large data sets to smaller data sets, called keys."
>>
>> > Are you miss-leading the power of true OOP ?
Duh. What's the point you're trying to make?
On Mon, Dec 5, 2011 at 10:17 AM, 8 Dihedral
wrote:
> On Monday, December 5, 2011 4:13:01 AM UTC+8, Ian wrote:
>> On Sun, Dec 4, 2011 at 11:06 AM, 8 Dihedral
>> wrote:
>> >> If you want to talk about ways to use dicts, please start a different
On Monday, December 5, 2011 4:13:01 AM UTC+8, Ian wrote:
> On Sun, Dec 4, 2011 at 11:06 AM, 8 Dihedral
> wrote:
> >> If you want to talk about ways to use dicts, please start a different
> >> thread for it. As has been pointed out several times now, it is
> >> off-topic for this thread, which
On Sat, 03 Dec 2011 05:54:19 +0200, Antti J Ylikoski wrote:
> I'm in the process of learning Python. I already can code
> objet-oriented programs with the language. I have in my hands the
> O'Reilly book by Mark Lutz, Programming Python, in two versions: the 2nd
> Edition, which covers Python 2,
On Sun, Dec 4, 2011 at 11:06 AM, 8 Dihedral
wrote:
>> If you want to talk about ways to use dicts, please start a different
>> thread for it. As has been pointed out several times now, it is
>> off-topic for this thread, which is about hash *functions*.
>
> A hash that can hash objects is not
On 12/04/11 08:08, Chris Angelico wrote:
2011/12/5 Hrvoje Niksic:
If a Python
implementation tried to implement dict as a tree, instances of classes
that define only __eq__ and __hash__ would not be correctly inserted in
such a dict.
Couldn't you just make a tree of hash values? Okay, that's p
in recent news...
Python wins LinuxJournal's Readers' Choice Awards 2011 as Best
Programming Language:
http://www.linuxjournal.com/slideshow/readers-choice-2011?page=27
yee-haw!! it's even more amazing that Python has won this title 3
straight years. let's celebrate and get back to building great
A hash that can hash objects is not a trivial hash function
On Monday, December 5, 2011 1:41:14 AM UTC+8, Ian wrote:
> On Sun, Dec 4, 2011 at 8:39 AM, 8 Dihedral
> wrote:
> > Thanks for your comments. Are we gonna talk about the way to implement a
> > hash
> > table or the use of a hash ta
On Sun, Dec 4, 2011 at 8:39 AM, 8 Dihedral
wrote:
> Thanks for your comments. Are we gonna talk about the way to implement a hash
> table or the use of a hash table in programming?
Implementing a hash table is not very relevant on a list about Python,
which already has them built into the lan
Hello!
I'm pleased to announce version 1.2.1, the first stable release of branch
1.2 of SQLObject.
What is SQLObject
=
SQLObject is an object-relational mapper. Your database tables are described
as classes, and rows are instances of those classes. SQLObject is meant to be
eas
On Sunday, December 4, 2011 9:41:19 PM UTC+8, Roel Schroeven wrote:
> Op 2011-12-02 6:48, 8 Dihedral schreef:
> > A hash stores (k,v) pairs specified in the run time with auto memory
> > management build in is not a simple hash function to produce data
> > signatures only clearly in my post.
>
On Mon, Dec 5, 2011 at 1:51 AM, Dave Angel wrote:
> On 12/04/2011 09:35 AM, Chris Angelico wrote:
>>
> struct.calcsize("4sQ")
>>
>> 16
>
> struct.calcsize("Q4s")
>>
>> 12
>>
>> The eight-byte integer is aligned on an eight-byte boundary, so when
>> it follows a four-byte string, you ge
On Dec 4, 9:38 am, Duncan Booth wrote:
> Glen Rice wrote:
> > In IPython:
> >>import struct
> >>struct.calcsize('4s')
> > 4
> >>struct.calcsize('Q')
> > 8
> >>struct.calcsize('4sQ')
> > 16
>
> > This doesn't make sense to me. Can anyone explain?
>
> When you mix different types in a struct there
Glen Rice wrote:
> In IPython:
>>import struct
>>struct.calcsize('4s')
> 4
>>struct.calcsize('Q')
> 8
>>struct.calcsize('4sQ')
> 16
>
> This doesn't make sense to me. Can anyone explain?
A C compiler can insert padding bytes into a struct:
"""By default, the result of packing a given C struct
On 12/04/2011 09:35 AM, Chris Angelico wrote:
On Mon, Dec 5, 2011 at 1:25 AM, Glen Rice wrote:
In IPython:
import struct
struct.calcsize('4s')
4
struct.calcsize('Q')
8
struct.calcsize('4sQ')
16
This doesn't make sense to me. Can anyone explain?
Same thing happens in CPython, and it loo
Glen Rice wrote:
> In IPython:
>>import struct
>>struct.calcsize('4s')
> 4
>>struct.calcsize('Q')
> 8
>>struct.calcsize('4sQ')
> 16
>
> This doesn't make sense to me. Can anyone explain?
>
When you mix different types in a struct there can be padding inserted
between the items. In this case t
On Mon, Dec 5, 2011 at 1:25 AM, Glen Rice wrote:
> In IPython:
>>import struct
>>struct.calcsize('4s')
> 4
>>struct.calcsize('Q')
> 8
>>struct.calcsize('4sQ')
> 16
>
> This doesn't make sense to me. Can anyone explain?
Same thing happens in CPython, and it looks to be the result of alignment.
>
On 4 December 2011 10:22, Peter Otten <__pete...@web.de> wrote:
> I found another one:
>
u"äöü ΦΧΨ".encode("latin1", "backslashreplace")
> '\xe4\xf6\xfc \\u03a6\\u03a7\\u03a8'
That's it! I was hoping for a built-in solution and this is it. FTR,
the 'backslashreplace' argument tells the enco
In IPython:
>import struct
>struct.calcsize('4s')
4
>struct.calcsize('Q')
8
>struct.calcsize('4sQ')
16
This doesn't make sense to me. Can anyone explain?
--
http://mail.python.org/mailman/listinfo/python-list
2011/12/5 Hrvoje Niksic :
> If a Python
> implementation tried to implement dict as a tree, instances of classes
> that define only __eq__ and __hash__ would not be correctly inserted in
> such a dict.
Couldn't you just make a tree of hash values? Okay, that's probably
not the most useful way to d
Terry Reedy writes:
>> [Hashing is] pretty much mandated because of the __hash__ protocol.
>
> Lib Ref 4.8. Mapping Types — dict
> "A mapping object maps hashable values to arbitrary objects."
>
> This does not say that the mapping has to *use* the hash value ;-).
> Even if it does, it could use
Op 2011-12-02 6:48, 8 Dihedral schreef:
> A hash stores (k,v) pairs specified in the run time with auto memory
> management build in is not a simple hash function to produce data
> signatures only clearly in my post.
>
> What I said a hash which is lifted as a basic type in python is
> calle
On 12/02/2011 04:48 PM, 8 Dihedral wrote:
On Friday, December 2, 2011 1:00:10 PM UTC+8, Chris Angelico wrote:
On Fri, Dec 2, 2011 at 3:29 PM, 8 Dihedral
wrote:
I clear my point a hash is a collection of (key, value) pairs that have
well defined methods and behavior to be used in progr
On 12/02/2011 03:29 PM, 8 Dihedral wrote:
I clear my point a hash is a collection of (key, value) pairs that have
well defined methods and behavior to be used in programming.
The basic operations of a hash normally includes the following:
1. insertion of a (key, value) pair into the hash
Arnaud Delobelle wrote:
> On 3 December 2011 23:51, Peter Otten <__pete...@web.de> wrote:
>> Arnaud Delobelle wrote:
>>
>>> I need to generate some java .properties files in Python (2.6 / 2.7).
>>> It's a simple format to store key/value pairs e.g.
>>>
>>> blue=bleu
>>> green=vert
>>> red=rouge
>>
On 3 December 2011 23:51, Peter Otten <__pete...@web.de> wrote:
> Arnaud Delobelle wrote:
>
>> I need to generate some java .properties files in Python (2.6 / 2.7).
>> It's a simple format to store key/value pairs e.g.
>>
>> blue=bleu
>> green=vert
>> red=rouge
>>
>> The key/value are unicode strin
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