How to Adding Functionality to a Class by metaclass(not by inherit)
#example:
import inspect
class Foo(object):
def f(self):
pass
def g(self):
pass
class MetaFoo(type):
def __init__(cls, name, bases, dic):
Hi Steve;
Steve M wrote:
>> First, I tried the usual "python setup.py install" but that did not work.
> How exactly did it fail? Perhaps you can paste the error output from
> this command.
Sure, he is the output:
linux:/home/fausto/Documents/psyco-1.4 # python setup.py install
PROCES
Ray wrote:
> 1. Where are the access specifiers? (public, protected, private)
There's no enforceable way of doing these. The convention is that names
that begin with a single underscore are private to the
class/module/function/etc. Hence why sys._getframe() is considered a
hack -- it's not of
Ray wrote:
> Devan L wrote:
>
>>Fausto Arinos Barbuto wrote:
>>
>>>Ray wrote:
>>>
>>>
1. Where are the access specifiers? (public, protected, private)
>>>
>>>AFAIK, there is not such a thing in Python.
>>>
>>>---Fausto
>>
>>Well, technically you can use _attribute to mangle it, but technic
I am sorry if I think like this, but sometimes(keyword sometimes) I like
distributing my interpreters.
Anyway, I found the absolute minimum libraries needed for Python to work
with Win32. And, I included FLTK for the GUI toolkit. Sorry, but
wxPython didn't fit my <30MB requirement.
You can b
John Machin wrote:
[...]
> Observation: factoring out the compile step makes the difference much
> more apparent.
>
> >>> ["%.3f" % t.timeit() for t in t3, t4, t5, t6]
> ['1.578', '1.175', '2.283', '1.174']
> >>> ["%.3f" % t.timeit() for t in t3, t4, t5, t6]
> ['1.582', '1.179', '2.284', '
Lenny G. wrote:
> I use 's = os.read(fd, 12)' to grab 12 bytes from a file. Now, I want
> to create a string, s1, which contains 16-12=4 bytes: 4,0,0,0, followed
> by the contents of s.
>
> I know how to 's1 = "\x04\x00\x00\x00"' and how to 's3 = s1+s', but I
> don't know how to construct s1
Xah Lee is a known troll. You are retarded to reply to his drivel.
--
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095
http://www.jamesstroud.com/
--
http://mail.python.org/mailman/listinfo/python-list
kyo guan wrote:
> How to Adding Functionality to a Class by metaclass(not by inherit)
>
[snip]
>
> class MetaFoo(type):
> def __init__(cls, name, bases, dic):
> super(MetaFoo, cls).__init__(name, bases, dic)
>
> for n, f in inspect.ge
Please look through this example code, and the comments. If I've
misspoken, please anyone correct my errors.
-- Paul
class OldStyleClass:
"""A definition of an old style class."""
pass
class NewStyleClass(object):
"""Note that NewStyleClass explicitly inherits from object. This
Nodir Gulyamov wrote:
> [...]I should show you real code
[...]
> Please find below real code. Sorry for amount of sources.
Yeah, it's too much for me. Can you construct a minimal
example that doesn't do what you think it should?
--
--Bryan
--
http://mail.python.org/mailman/listinfo/python-li
Hi
I am relatively new to Python.
I am using Qt Designer to create a UI for a measurement application that I
use.
Everything seems to be clear but the use of globals (defined in the module
that is generated using pyuic, that contains the form class).
I am using qwtplot to display a running plot
Try the zip funciton:
py> a = [11,12,13,14]
py> b = [2,3,4,5]
py> c = [20,21,22,23,24,25]
py> zip(a,b,c)
[(11, 2, 20), (12, 3, 21), (13, 4, 22), (14, 5, 23)]
On Thursday 11 August 2005 09:05 pm, zxo102 wrote:
> Hi,
>I got several dynamic lists a1, b1, c1, from a python
> application
"zxo102" <[EMAIL PROTECTED]> writes:
> Hi,
>I got several dynamic lists a1, b1, c1, from a python
> application such as
>a1 = [1,5,3,2,5,...], the len(a1) varies. Same to b1, c1,
>
>With python, I would like to reorganize them into a tuple like
>
>t1 = ((a1[0],b1[0],c1[0]
Ray <[EMAIL PROTECTED]> wrote:
> 1. Where are the access specifiers? (public, protected, private)
No such thing (or, if you like, everything is "private" by default).
By convention, "please don't access this name externally" is indicated
by using the name '_foo' instead of 'foo'; similar to a "pr
Try this:
>>> a,b,c = list('tab'),list('era'),list('net')
>>> a,b,c
(['t', 'a', 'b'], ['e', 'r', 'a'], ['n', 'e', 't'])
>>> tuple(((x,y,z) for x,y,z in zip(a,b,c)))
(('t', 'e', 'n'), ('a', 'r', 'e'), ('b', 'a', 't'))
>>>
- Paddy.
--
http://mail.python.org/mailman/listinfo/python-list
Instance variables are typically defined in __init__(), but they can be
added to an object anywhere. The only exception is when defining the
magic __slots__ class variable to pre-define what the allowed instance
variables can be.
class A:
pass
a = A()
a.instVar1 = "hoo-ah"
a.instVar2 = "another
Thanks guys! Your explanations have cleared up things significantly.
My transition from C++ to Java to C# was quite painless because they
were so similar, but Python is particularly challenging because the
concepts are quite different. (I always have this paranoid feeling: "Am
I using Python to wr
Hi all
I am using win32 odbc to connect to SQL Server. I have just started
using the 'bit' data type, which is a boolean type which can store 1 or
0.
This works with win32, but it returns '1' or '0'. Obviously I can
change it to an int, but it would be nicer and more correct if it
returned an int
Thanks for your help.
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http://mail.python.org/mailman/listinfo/python-list
On Thu, 11 Aug 2005 15:02:08 -0400
Terry Reedy wrote:
> I remember discussion of the LSP on comp.object some years ago when I
> was reading it. (I presume there still are, just don't read it
> anymore.). One of the problems is that biology and evolution do not
> obey it. Birds (in general) c
I use the following
###
import re
Results=[]
data1=''
ID = re.compile(r'^.*=(\d+)&.*$',re.MULTILINE)
Results=re.findall(ID,data1)
print Results
#
to extract from data1 all numbers such as 15015,15016,15017
But the program extracts only the last number 15017.
Why?
Thank you
I found a good solution to this problem in Richard Steven's
_Network_Programming_. It seems like everything shows up in Steven's
books! Rather than pausing, you do a blocking read on a pipe. You
only write to the pipe from within the signal handler. However, this
brings up the better question:
Paolo Veronelli wrote:
> Yes this is really strange.
>
> from sets import Set
> class H(Set):
> def __hash__(self):
> return id(self)
>
> s=H()
> f=set() #or f=Set()
>
> f.add(s)
> f.remove(s)
>
> No errors.
>
> So we had a working implementation of sets in the library an put a
> broken
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