On Sat, 21 Apr 2012 14:48:44 +0200, Bernd Nawothnig wrote:
> On 2012-04-20, Rotwang wrote:
>> since a method doesn't assign the value it returns to the instance on
>> which it is called; what it does to the instance and what it returns
>> are two completely different things.
>
> Returning a None-
On Sun, Apr 22, 2012 at 1:14 PM, Steven D'Aprano
wrote:
> The CPython interpreter is especially aggressive in optimizing multiple
> literals in the same line. Compare this:
>
x = 3.1; y = 3.1; x is y
> True
>
> with this:
>
x = 3.1
y = 3.1
x is y
> False
>
>
> Again, this is an
On Sat, 21 Apr 2012 15:02:00 +0200, Bernd Nawothnig wrote:
> On 2012-04-20, dmitrey wrote:
>> I have spent some time searching for a bug in my code, it was due to
>> different work of "is" with () and []:
> () is ()
>> True
>
> You should better not rely on that result. I would consider it to
On 04/21/2012 02:14 PM, someone wrote:
> Thanks for your reply Mr. Roy Smith. Also, thanks for the tip. Maybe
> I did not make myself as clear or maybe you did not understand my
> post. It states homework help, and I am doing this post to get help
> before I pay somebody to show me how to do it,
On 21/04/12 23:48, BartC wrote:
"someone" wrote in message
news:9533449.630.1335042672358.JavaMail.geo-discussion-forums@ynmf4...
On Saturday, April 21, 2012 3:44:49 PM UTC-5, BartC wrote:
Hi, Bart: Thank you, your post is working now, maybe, I did something
wrong, unfortunately, you are rig
"someone" wrote in message
news:9533449.630.1335042672358.JavaMail.geo-discussion-forums@ynmf4...
On Saturday, April 21, 2012 3:44:49 PM UTC-5, BartC wrote:
Hi, Bart: Thank you, your post is working now, maybe, I did something
wrong, unfortunately, you are right, my setup for getting the file
On 4/21/12 10:15 PM, Bernd Nawothnig wrote:
Your argument above was: it would violate first principles. And I still don't
see that point. The comparison [] is [] maybe totally useless, of course, but
which first principle would be violated by a compiler that lets that
expression evaluate to True
On 4/21/2012 22:26, GrayShark wrote:
---
#!/usr/bin/python
xl = ["First Name and Last","ENGR 109-X","Fall 2999","Format Example"]
xl_max = 0
for x in xl:
xl_max = max ( len( x ), xl_max )
Or
xl_max = max([len(x) for x in xl])
topBorder = '^'*( xl_max + 4 )
pr
On Sat, Apr 21, 2012 at 03:43:03PM -0400, Dave Angel wrote:
> On 04/21/2012 09:48 AM, Bernd Nawothnig wrote:
> > On Sat, Apr 21, 2012 at 09:21:50AM -0400, Dave Angel wrote:
> >>> [] is []
> False
> >>> Same for that.
> >>
> >> Here I have to disagree. If an implementation reused the list
On Saturday, April 21, 2012 3:44:49 PM UTC-5, BartC wrote:
> "someone" wrote in message
> news:9071485.2215.1335040139144.JavaMail.geo-discussion-forums@yniw15...
>
> > Thanks Bart for trying, it helped me out a little more by showing me a
> > little more than I knew, but I tried and I am not sur
"someone" wrote in message
news:9071485.2215.1335040139144.JavaMail.geo-discussion-forums@yniw15...
Thanks Bart for trying, it helped me out a little more by showing me a
little more than I knew, but I tried and I am not sure if it does fit my
example due to it was too many stars in between the
"someone" wrote in message
news:4068590.2196.1335038608255.JavaMail.geo-discussion-forums@ynjn4...
textTuple = border(SHI)
for lines in textTuple:
print (lines)
Thanks your Bart for trying, I don't understand how it works or if you
tried to place my script in python to see if it would wo
On Saturday, April 21, 2012 12:28:33 PM UTC-5, someone wrote:
> Ok, this is my dillema, not only am I new to this programming buisness,
> before the last few days, I did not even know what python was, and besides
> opening up the internet or word documents, that is most of what I know. Yet,
> I
A lot of to do about this.
---
#!/usr/bin/python
xl = ["First Name and Last","ENGR 109-X","Fall 2999","Format Example"]
xl_max = 0
for x in xl:
xl_max = max ( len( x ), xl_max )
topBorder = '^'*( xl_max + 4 )
print topBorder
for x in xl:
print "* %s%s *
On 04/21/12 14:44, Roy Smith wrote:
> print "* %-*s *" % (max_length, data)
On Apr 21, 2012, at 4:12 PM, Tim Chase wrote:
> Sounds like a lot more work and less flexible than using the (underemployed)
> .ljust() or .center() methods of a string. :-)
>
> print "* %s *" % data.ljust(42)
Six o
On Saturday, April 21, 2012 12:28:33 PM UTC-5, someone wrote:
> Ok, this is my dillema, not only am I new to this programming buisness,
> before the last few days, I did not even know what python was, and besides
> opening up the internet or word documents, that is most of what I know. Yet,
> I
On Saturday, April 21, 2012 12:28:33 PM UTC-5, someone wrote:
> Ok, this is my dillema, not only am I new to this programming buisness,
> before the last few days, I did not even know what python was, and besides
> opening up the internet or word documents, that is most of what I know. Yet,
> I
On 04/21/12 14:44, Roy Smith wrote:
***
* *
* First Name and Last *
* ENGR 109-X *
* Fall 2999 *
* Format Example *
* *
***
You
In article
<32945367.2045.1335029313436.JavaMail.geo-discussion-forums@ynjn4>,
someone wrote:
I'm not going to do your homework for you (nor do I expect anybody else
will), but I'll give you a hint about one sticky part.
> 6) Display the SHI data read from the file in the interpreter with a b
On 04/21/2012 09:48 AM, Bernd Nawothnig wrote:
> On Sat, Apr 21, 2012 at 09:21:50AM -0400, Dave Angel wrote:
>>> [] is []
False
>>> Same for that.
>>
>> Here I have to disagree. If an implementation reused the list object
>> for two simultaneously-existing instances, it would violate firs
"someone" wrote in message
news:32945367.2045.1335029313436.JavaMail.geo-discussion-forums@ynjn4...
6) Display the SHI data read from the file in the interpreter with a
border around the SHI data (include a buffer of 1 line/space between the
border and SHI data). An example might look like:
On 21/04/2012 18:28, someone wrote:
Ok, this is my dillema, not only am I new to this programming buisness, before
the last few days, I did not even know what python was, and besides opening up
the internet or word documents, that is most of what I know. Yet, I have a
professor who should be o
On Saturday, 21 April 2012 18:35:26 UTC+1, someone wrote:
> On Saturday, April 21, 2012 12:28:33 PM UTC-5, someone wrote:
> > Ok, this is my dillema, not only am I new to this programming buisness,
> > before the last few days, I did not even know what python was, and besides
> > opening up the
On Sat, Apr 21, 2012 at 11:28 AM, someone wrote:
> for item in userinput:
> openfile=open(textfile,'w');openfile.writelines("%s\n" % item for item in
> userinput);openfile.close()
The for loop here means that the file will be written and rewritten
four times. The end result is the same, but
On 2012-04-21, Kiuhnm wrote:
> Sorry if I wasn't clear. I meant that one should either relies on
> side-effects and write something like
>a.append('x').append('t').append('z')
> or use a more functional style and write
>a = a + [x] + [z]
> Mixing the two doesn't seem very elegant to me.
>
On Saturday, April 21, 2012 12:28:33 PM UTC-5, someone wrote:
> Ok, this is my dillema, not only am I new to this programming buisness,
> before the last few days, I did not even know what python was, and besides
> opening up the internet or word documents, that is most of what I know. Yet,
> I
Ok, this is my dillema, not only am I new to this programming buisness, before
the last few days, I did not even know what python was, and besides opening up
the internet or word documents, that is most of what I know. Yet, I have a
professor who should be on Psych medication for giving us 3 pro
On 4/21/2012 18:14, Kiuhnm wrote:
On 4/21/2012 17:41, Bernd Nawothnig wrote:
On 2012-04-21, Kiuhnm wrote:
Returning a None-value is pretty useless. Why not returning self,
which would be
the resulting list in this case? Returning self would make the
language a little bit more functional, withou
On 4/21/2012 9:02 AM, Bernd Nawothnig wrote:
You should better not rely on that result. I would consider it to be
an implementation detail. I may be wrong, but would an implementation
that results in
() is () ==> False
be correct or is the result True really demanded by the language
specifica
On 4/21/2012 17:41, Bernd Nawothnig wrote:
On 2012-04-21, Kiuhnm wrote:
Returning a None-value is pretty useless. Why not returning self, which would be
the resulting list in this case? Returning self would make the
language a little bit more functional, without any drawback.
^
On 4/21/2012 9:08 AM, Dave Angel wrote:
On 04/21/2012 08:48 AM, Bernd Nawothnig wrote:
On 2012-04-20, Rotwang wrote:
since a method doesn't assign the value it returns to the instance on
which it is called; what it does to the instance and what it returns are
two completely different things.
R
On 2012-04-21, Kiuhnm wrote:
>> Returning a None-value is pretty useless. Why not returning self, which
>> would be
>> the resulting list in this case? Returning self would make the
>> language a little bit more functional, without any drawback.
>>
>> Then
On Sat, Apr 21, 2012 at 10:51 PM, gst wrote:
> case 2) also ok to me:
>
x = id([]) ; y = id([])
x == y
> True
>
>
> case 3) NOT ok to me :
>
x = id([])
y = id([])
x == y
> False
The fact that ids get reused at all is an implementation detail ONLY.
In CPython, id
Le samedi 21 avril 2012 10:46:39 UTC+2, Alexander Blinne a écrit :
> Am 21.04.2012 05:25, schrieb Rotwang:
>
> This happens only because the first [] gets destroyed after evaluation
> of id([]). The second [] then by accident gets the same id as the first
> one had.
>
> >>> a = []
> >>> b = []
>
On 4/21/2012 14:48, Bernd Nawothnig wrote:
On 2012-04-20, Rotwang wrote:
since a method doesn't assign the value it returns to the instance on
which it is called; what it does to the instance and what it returns are
two completely different things.
Returning a None-value is pretty useless. Why
On 04/21/2012 09:02 AM, Bernd Nawothnig wrote:
> On 2012-04-20, dmitrey wrote:
>> I have spent some time searching for a bug in my code, it was due to
>> different work of "is" with () and []:
> () is ()
>> True
> You should better not rely on that result. I would consider it to be
> an impleme
On 04/21/2012 08:48 AM, Bernd Nawothnig wrote:
> On 2012-04-20, Rotwang wrote:
>> since a method doesn't assign the value it returns to the instance on
>> which it is called; what it does to the instance and what it returns are
>> two completely different things.
> Returning a None-value is prett
On 2012-04-20, dmitrey wrote:
> I have spent some time searching for a bug in my code, it was due to
> different work of "is" with () and []:
() is ()
> True
You should better not rely on that result. I would consider it to be
an implementation detail. I may be wrong, but would an implementat
On 21/04/2012 09:36, Steven D'Aprano wrote:
[...]
Here is how I would write the above.
import functools
def memoise(func):
"""Decorator to memoise a function."""
cache = {}
@functools.wraps(func)
def inner(*args, **kwargs):
# Make sure keyword args are always look
On 2012-04-20, Rotwang wrote:
> since a method doesn't assign the value it returns to the instance on
> which it is called; what it does to the instance and what it returns are
> two completely different things.
Returning a None-value is pretty useless. Why not returning self, which would be
the
On Saturday, 21 April 2012 09:25:40 UTC+1, Steven D'Aprano wrote:
> On Fri, 20 Apr 2012 09:10:15 -0700, Jon Clements wrote:
>
> >> But I don't know how. I know that I can see the default arguments of
> >> the original function using func.__defaults__, but without knowing the
> >> number and names
On 04/21/2012 06:03 AM, Santosh Kumar wrote:
> Hello Python Developers,
>
> I have a very less experience with programming. I have digged a little bit
> of all (I mean *C, **Java, JavaScript, PHP*) at introductory level and now
> I have two question about it.
>
>1. Are *Arrays* and *Lists* same
On Apr 19, 9:18 pm, Page3D wrote:
> Hi, I am trying to connect and access data in a *.sdf file on Win7
> system using Python 2.7. I have three questions:
>
> 1. What python module should I use? I have looked at sqlite3 and
> pyodbc. However, I can seem to get the connection to the database file
>
Hello Python Developers,
I have a very less experience with programming. I have digged a little bit
of all (I mean *C, **Java, JavaScript, PHP*) at introductory level and now
I have two question about it.
1. Are *Arrays* and *Lists* same things?
2. Are *Modules* and *Libraries* same things?
[] is []
False
id([]) == id([])
True
>>> id([1]) == id([2])
True
;)
--
http://mail.python.org/mailman/listinfo/python-list
Am 21.04.2012 05:25, schrieb Rotwang:
> On 21/04/2012 01:01, Roy Smith wrote:
>> In article<877gxajit0@dpt-info.u-strasbg.fr>,
>> Alain Ketterlin wrote:
>>
>>> Tuples are immutable, while lists are not.
>>
>> If you really want to have fun, consider this classic paradox:
>>
> [] is []
>>
On Fri, 20 Apr 2012 16:57:06 +0100, Rotwang wrote:
> def memo(func):
> def memofunc(*args, **kwargs):
> twargs = tuple(kwargs.items())
> if (args, twargs) in memofunc.d:
> return copy(memofunc.d[(args, twargs)])
> memofunc.d[(args, twargs)] = func(*args
On Fri, 20 Apr 2012 09:10:15 -0700, Jon Clements wrote:
>> But I don't know how. I know that I can see the default arguments of
>> the original function using func.__defaults__, but without knowing the
>> number and names of func's positional arguments (which I don't know how
>> to find out) this
On Fri, 20 Apr 2012 23:01:08 -0400, Roy Smith wrote:
> A basket of apples is a basket which contains apples, in the same way a
> list contains foos. But an iterator doesn't contain anything. You
> wouldn't say, "a spigot of water", because the spigot isn't a container
> holding the water. It is
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