what's the big deal for print()

[pipehappy]

Hi,

Why people want print() instead of print str? That's not a big deal
and the old choice is more natural. Anyone has some clue?
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come back and find python 3

[pipehappy]

Hi, all

Just come back to use Python, but find something has changed in Python
3.
Like package name is no longer with capitalized char for each word in
the name;
convenient print is removed.

And I don't know why can someone inside explain
to me about this. I think old package name is better for read while
new is better
to code. And old print is good tool for new comers.

Any other notable change between this 2 version? Or is there links to
articles
about the changes not in a developer view but a user view?

Best

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maybe this is a print odds

[pipehappy]

I come this code:

Python 2.5 (r25:51908, Sep 19 2006, 09:52:17) [MSC v.1310 32 bit
(Intel)] on win
32
Type help, copyright, credits or license for more information.
 class He(object):
... def __str__(self):
... return He
...
 hes = [He(),He(),He()]
 print hes
[__main__.He object at 0x00BE92D0, __main__.He object at
0x00BE9370, __main
__.He object at 0x00BE93B0]   # I expect output: [He,He,He]
 print hes[0]
He


Do anyone know trick to overcome this or python has some proposal to
extend print that can do iterately print? I just want to get the way of
print which I my guess. Thanks a lot!

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about Python types and objects

[pipehappy]

Hi everyone:

I have read the booth python types and objects.  I think its book for
clearificating types and objects in python.  It says there will be a
book named python attributes and methods.  Do you know any information
about this book.  I am interested in it.

Thanks

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check type when assignment

[pipehappy]

Hello everyone:

Is there a way to check the type when do assignment?

if I write:
ab = bc
and want to make sure the return value of isinstance(bc, klass) is True
or I will raise
a exception.

Any suggestion?

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Re: How to use images at the bachground?

[pipehappy]

 hi all,
 how to get out of the python shell which is executing a command?
 how to use images in the background of a page in Tkinter?

on Unix, ctrl-c or ctrl-d may do the job.
on Windows, ctrl-z will do

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know reference name in instance

[pipehappy]

Hello:

Is it possible for an instance know its name used by other part of
program.  I mean like this:

class test:
def __init__(self):
pass

when some one writes

x = test()

then one of attribute of x contain the name x

Is it possible?

I expect someone can tell me how to do it.

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Re: know reference name in instance

[pipehappy]

Fredrik Lundh wrote:

 pipehappy wrote:

  Is it possible for an instance know its name used by other part of
  program.  I mean like this:
 
  class test:
  def __init__(self):
  pass
 
  when some one writes
 
  x = test()
 
  then one of attribute of x contain the name x
 
  Is it possible?

 not really.

 and what should happen if you do, say

 x = test()
 y = x

I may choose the name when the class is initialized, other may choose
the newest name. It depends.
 or

 x = [test(), test(), test()]

 ?
None may be the good answer here.

 for more on this, see:

 http://pyfaq.infogami.com/how-can-my-code-discover-the-name-of-an-object

 /F
Yes, You are right. But variety of condition is not necessary
prohibiting the promotion of such question but provides the possibility
for different answer. So is there some way I can ask the environment to
tell me the name? 

With respect, I read your words and it's great.

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error in ConfigParser

[pipehappy]

Hello everyone:

I came across the module ConfigParser and can use it correctly.

import ConfigParser
fp = open('test.cfg','w+')
config = ConfigParser.ConfigParser()
config.readfp(fp)
config.add_section('test')
config.set('test', 'haha', 'hehe')
print config.sections()
config.write(fp)

['test']
Traceback (most recent call last):
  File configparser.py, line 8, in ?
config.write(fp)
  File C:\Python24\lib\ConfigParser.py, line 369, in write
fp.write([%s]\n % section)
IOError: (0, 'Error')

I trace into the module and when executing the line fp.write([%s]\n
% section), I find every parameter is correct: fp is still a open file
object and section is 'test', I may miss something, but I just cannot
figure it out. Can someone tell me what's going wrong here?

Thanks

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how to tell the version of tk shipped with Python

[pipehappy]

I am a newbie to the Python and wonder how I can know version of tk
bound with Python

Can some one tell me?

Thanks

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