Re: Hwy doesn't len(None) return zero ?
On Thu, Jul 1, 2010 at 12:09 AM, Stef Mientki stef.mien...@gmail.comwrote: hello, I've lot of functions that returns their result in some kind of tuple / list / array, and if there is no result, these functions return None. Now I'm often what to do something if I've more than 1 element in the result. So I test: if len ( Result ) 1 : But to prevent exceptions, i've to write ( I often forget) if Result and ( len ( Result ) 1 ) : use if Result: do something Checking the length would be a bad idea. -- http://mail.python.org/mailman/listinfo/python-list
Re: Using Python for web applications
On Wed, Jun 30, 2010 at 11:34 PM, Wyatt Schwartz wyattj...@gmail.comwrote: Dear Python-List members, Sorry for asking such a simple (or possibly complicated) question, as I am new to Python programming. Anyways, I have read online that many popular websites use Python for some of their web-based applications (for example, Reddit), and that lead me to wonder how is this done? Thanks in advance! I would recommend that you check out the various web-frameworks which are out there. Django is the framework I use and love, but there are loads out there. Have fun! Zubin -- http://mail.python.org/mailman/listinfo/python-list
Re: Composition of functions
Hello, y=list(x).reverse() print y None L = [a, b, c] L.reverse() L [c, b, a] As you can see, L.reverse() performs the operation on itself and returns nothing. Hence, the return type None. Instead of y=''.join(list(x).reverse()) you should probably do, t = list(x).reverse() y = ''.join(t) Cheers! Zubin -- http://mail.python.org/mailman/listinfo/python-list
Re: Composition of functions
Er, I don't think you thought that one entirely through (/ tried it out): My Apologies. Here is a working one. x=123 t = list(x) t.reverse() print ''.join(t) 321 But of course, the method which was suggested earlier is far more elegant. print ''.join(reversed(list(x))) Cheers! Zubin -- http://mail.python.org/mailman/listinfo/python-list
[issue8312] Add post/pre hooks for distutils commands
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[issue8324] add a distutils test command
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[issue8274] test_run failing
New submission from Zubin Mithra zubin.mit...@gmail.com:
==
FAIL: test_run (distutils2.tests.test_build_clib.BuildCLibTestCase)
--
Traceback (most recent call last):
File
/media/disk/myWorks/working/distutils2/src/distutils2/tests/test_build_clib.py,
line 137, in test_run
self.assertTrue('libfoo.a' in os.listdir(build_temp))
AssertionError: False is not True
--
Ran 135 tests in 1.004s
FAILED (failures=1, skipped=4)
Traceback (most recent call last):
File runtests.py, line 18, in module
test_main()
File runtests.py, line 12, in test_main
run_unittest(distutils2.tests.test_suite())
File
/media/disk/myWorks/working/distutils2/src/distutils2/tests/__init__.py, line
86, in run_unittest
_run_suite(suite)
File
/media/disk/myWorks/working/distutils2/src/distutils2/tests/__init__.py, line
66, in _run_suite
raise TestFailed(err)
distutils2.tests.TestFailed: Traceback (most recent call last):
File
/media/disk/myWorks/working/distutils2/src/distutils2/tests/test_build_clib.py,
line 137, in test_run
self.assertTrue('libfoo.a' in os.listdir(build_temp))
AssertionError: False is not True
--
assignee: tarek
components: Distutils2
messages: 102011
nosy: tarek, zubin71
severity: normal
status: open
title: test_run failing
type: behavior
versions: Python 2.6
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[issue8190] Add a PyPI XML-RPC client module
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[issue8250] Implement pkgutil APIs as described in PEP 376
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[issue8252] add a metadata section in setup.cfg
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[issue8253] add a resource+files section in setup.cfg
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[issue8254] write a configure command
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[issue8255] step-by-step tutorial
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[issue7677] distutils, better error message for setup.py upload -sign without identity.
Zubin Mithra zubin.mit...@gmail.com added the comment: are you suggesting that a warning stating that '--identity has`nt been used' has to be generated? -- nosy: +zubin71 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7677 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
D-Bus
Hello, I have experience writing scripts to connect to the D-Bus interface provided by different applications but have no experience writing a D-Bus interface for an application. Could someone point me in the right direction? A tutorial or a good example would be nice. Cheers!!! Zubin Mithra http://zubin71.wordpress.com -- http://mail.python.org/mailman/listinfo/python-list
PyAutoRun
Hello, I have been using python for quite some time; however this is the first python project i have worked on. The code is hosted at http://github.com/zubin71/PyAutoRun The code needs re-factoring and feature additions; i have put up a TODO list there too. It`d be great if anyone could work on this; i intend to develop this further(with a bit of help) and will request for its addition into debian and ubuntu repositories, in time. Also, any kind of code-review, criticism, is also appreciated. However, it`d be awesome if you could just fork it at github, pull, modify and push. :) Have a nice day! cheers!!! Zubin -- http://mail.python.org/mailman/listinfo/python-list
socket programming
The code snippet i have pasted at, http://paste.pocoo.org/show/160555/ produces a traceback which also has been pasted at the above link. The snippet attempts at socket programming using OOPs concepts. Please help. Thankx in advance Zubin Mithra -- http://mail.python.org/mailman/listinfo/python-list
code review
Hello, I`m pretty new to developing applications using python and i would like advance on this script i recently created which helps linux programmers on the linux terminal. The code is very simple to understand(i hope) and serves a simple purpose; however i am not sure if my way of scripting is the right pythonic way of doing it. The package can be found at www.code.google.com/p/pyautorun I`d love any feedback, ideas and criticism after a code review. Thank you in advance. cheers!!! Zubin Mithra -- http://mail.python.org/mailman/listinfo/python-list
Re: more efficient?
thank you for your help and support. i`ll keep your advice in mind. :) cheers!!! Zubin On Tue, Dec 22, 2009 at 8:07 PM, Lie Ryan lie.1...@gmail.com wrote: On 12/22/2009 5:13 PM, Zubin Mithra wrote: I have the following two implementation techniques in mind. def myfunc(mystring): check = hello, there + mystring + !!! print check OR structure = [hello, there,,!!!] def myfunc(mystring): structure[2] = mystring output = ''.join(mystring) i heard that string concatenation is very slow in python; so should i go for the second approach? could someone tell me why? Would there be another 'best-practice-style'? Please help. Thankx in advance! Python's strings are immutable and to concatenate two string the interpreter need to copy two whole string into a new string object. This isn't a performance problem until you're trying to concatenate a list containing a thousand strings: ['abc', 'bcd', 'cde', 'def', ...] with the naive approach: joined = '' for s in lst: joined = joined + s first python will conc. '' and 'abc', copying 0+3 = 3 chars then it conc. 'abc' and 'bcd', copying 3+3 = 6 chars then it conc. 'abcbcd' and 'cde' copying 6+3 = 9 chars then it conc. 'abcbcdcde' and 'def' copying 9+3 = 12 chars and so on... for four 3-letter strings, python copies 3 + 6 + 9 + 12 = 30 chars, instead of the minimum necessary 12 chars. It gets worse as the number of strings increases. When you concatenate two 1000-chars large strings, both + and ''.join will have to copy 2000 chars. But when you join one thousand 2-chars string you'll need to copy 1001000 chars[!] with +. Now, early optimization *is evil*. Don't start throwing ''.join every here and there. The performance by the concatenations won't start to matter until you're concatenating a large lists (40) and + is much more readable than ''.join(). When concatenating small number of strings I preferred %-interpolation/str.format; it's often much more readable than ''.join and +. -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
more efficient?
I have the following two implementation techniques in mind. def myfunc(mystring): check = hello, there + mystring + !!! print check OR structure = [hello, there,,!!!] def myfunc(mystring): structure[2] = mystring output = ''.join(mystring) i heard that string concatenation is very slow in python; so should i go for the second approach? could someone tell me why? Would there be another 'best-practice-style'? Please help. Thankx in advance! cheers!!! Zubin -- http://mail.python.org/mailman/listinfo/python-list
