I've heard that the reason why python uses reference counting rather
than tracing collector is because python cannot determine the root set
for its various C extensions.
But provided that BDWGC(full name: Boehm-Demers-Weiser conservative
garbage collector) is conservative --- can be used for C, and
Aahz <[EMAIL PROTECTED]> wrote:
> In article <[EMAIL PROTECTED]>,
> Alex Martelli <[EMAIL PROTECTED]> wrote:
> ><[EMAIL PROTECTED]> wrote:
> > ...
> >> Brett Cannon's thesis in which he tweaks the compiler and shows that
> >> type-defing python would not help the compiler achieve a 5% performace
hello, recently i tried to use list.append() function in seemingly
logical ways, however, i cannot get it to work, here is the test code:
>>> seed = [2, 3, 4, 5]
>>> next = 7
>>> seed1 = seed.append(next)
>>> seed1
>>> print(str(seed1))
None
>>> def test(lst):
... print(str(lst))
...
>>> test(
A typo here? seed v/s seed1.
Instead of "print(seed.append(5))", try "seed.append(5)" followed by
"print seed" -- "print(seed)" also works. The append method does not
return the appended value
(like many C functions).
- Murali
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that's definitely the way to go ..
-create a database_object
-initialise at start up
-then pass the database object to other classes as needed ...
If you want to get really fancy have a look at some ORM's ... I think
there is a Python one called SQLObject?
[EMAIL PROTECTED] wrote:
> hey there,
the output of this code below is not what one would expect, it outputs
all kind of numbers and it never stops, I want to ask the user for a
number and then print out the multiplication table up to that number.
thanks
import math
On 28/04/2006 1:49 PM, [EMAIL PROTECTED] wrote:
> hello, recently i tried to use list.append() function in seemingly
> logical ways, however, i cannot get it to work, here is the test code:
>
seed = [2, 3, 4, 5]
next = 7
seed1 = seed.append(next)
seed1
print(str(seed1))
>
[EMAIL PROTECTED] schrieb:
>
> Is there a standard way to document protocols in Python? Of should I
> come up with something tailored to my needs.
>
Write unittests or doctest strings.
--
Servus, Gregor
http://www.gregor-horvath.com
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On 28/04/2006 2:04 PM, Gary Wessle wrote:
>
> the output of this code below is not what one would expect, it outputs
> all kind of numbers and it never stops, I want to ask the user for a
> number and then print out the multiplication table up to that number.
That's what you want, but not what yo
John Machin <[EMAIL PROTECTED]> writes:
> On 28/04/2006 2:04 PM, Gary Wessle wrote:
> > the output of this code below is not what one would expect, it
> > outputs
> > all kind of numbers and it never stops, I want to ask the user for a
> > number and then print out the multiplication table up to t
This is great !
ok, i dont really have a lot of time to get into the ORMS (before your
post, this is the first i have heard of it) and my stuff is due on
Monday. he he.
but, if i am able to make a global db connection, and multiple cursors
pointing to the same connection object, how do i pull tha
1) It appears as if the following logic works for determining whether
an element is a parent:
# assume elem is an ElementTree element
if (elem.getchildren() == None):
print 'this element is not a parent'
else:
print 'this element is a parent'
My question is this: are there any other ways
I am going through this tut from
http://ibiblio.org/obp/thinkCS/python/english/chap07.htm
I am getting errors running those 2 groups as below as is from the tut
thanks
index = 0
while index < len(fruit):
letter = fruit[index]
print letter
index = index + 1
or
for char in fruit:
Thanks for the suggestions.
I tried the tuple to list to tuple method with no success
Its not a .Value issue either.
In order to keep going I've left this code as vb for the moment
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[EMAIL PROTECTED] wrote:
> 1) It appears as if the following logic works for determining whether
> an element is a parent:
>
> # assume elem is an ElementTree element
> if (elem.getchildren() == None):
> print 'this element is not a parent'
> else:
> print 'this element is a parent'
>
> My
Scott Simpson wrote:
> Lastly, is there an equivalent of Perl's "die" function? I'm writing to
> stderr and dieing above but I'm not quite sure if this is the "correct"
> way.
You can call sys.exit() with a string. Python will print it to stderr and
terminate with a nonzero exit status.
Peter
--
your on the right track ... create something like this ( hope the formatting
doesn't go to hay wire )
class DB_Connector(object):
""" Humble Database Connection Class """
def __init__(self, host="localhost", user="MyUser",passwd="MyPassword",
**other_db_arguments):
what errors are you getting? Could it be an indentation error? I don't
see anything wrong with the script except the value of fruit is
missing. if fruit is a string, it should work like a charm. double
check the length of the fruit with print len(fruit) and check fruit
with print type(fruit) and ma
Gary Wessle wrote:
> I am going through this tut from
> http://ibiblio.org/obp/thinkCS/python/english/chap07.htm
>
> I am getting errors running those 2 groups as below as is from the tut
Next time, please copy and paste the complete "traceback", the error
messages that clutter your screen when
Oops .. slight edit
now when you pass the db_connection instance to other classes, a reference will
be passed automagically
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seed = [1,2,3]
seed.append(4)
print seed # [1,2,3,4]
many of the list methods are in place methods on a mutable object. In
other words, doing the following results in None.
seed = [1,2,3]
seed = seed.append(4)
print seed # None
you also just wiped out your list... The append method like many o
On 04/28/2006 07:54 AM, *binarystar* wrote:
Just wondering: is there any risk of two threads accessing the Execute
function at the same time and getting something like this on the same
cursor object:
thread_1: self.cursor.Execute( sql_statement )
thread_2: self.cursor.Execute( sql_statement )
thr
# Try This
seed = [2, 3, 4, 5]
next = [7]
seed1 = seed + next
[EMAIL PROTECTED] wrote:
> hello, recently i tried to use list.append() function in seemingly
> logical ways, however, i cannot get it to work, here is the test code:
>
seed = [2, 3, 4, 5]
next = 7
seed1 = seed.append(
I suppose that is possible because you are calling the one instance of a cursor
object ... maybe you have to create a copy of the cursor object, rather than
passing a reference to the one object? or set up the db_connection objects
inside each of the threads? ..
Winfried Tilanus wrote:
> On 0
sturlamolden wrote:
> edit the text file "c:\mingw\lib\gcc\mingw32\3.2.4\specs"
> and change "-lmsvcrt" to "-lmsvcr71".
Thank you very much sturlamolden,
This procedure should be added to the "step-by-step" guide (see 1st
message of this thread) as "step A.5".
For ignorant people like me, CRT =
Something like (untested):
out = []
for ch in instring:
if ch==backspace:
if out:
out = out[:-1]
else:
out.append(ch)
outstring = ''.join(out)
- Pad.
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