On Sun, Sep 19, 2010 at 2:40 AM, Lie Ryan wrote:
>
> More slowly and takes huge amount of memory. A single Tk canvas object
> takes at least 14 words (= 114 bytes in 64-bit OS = 56 bytes in 32-bit
> OS) + the amount of data is needed to store the `kind of object`. That's
> much larger than the id
Hello Ken,
On Sun, 19 Sep 2010 04:18:06 am Ken Oliver wrote:
>
> body{font-size:10pt;font-family:arial,sans-serif;background-co
>lor:#ff;color:black;}p{margin:0px;}
>
>
> http://mail.python.org/mailman/listinfo/tutor
On Mon, 20 Sep 2010 02:09:37 am Alan Gauld wrote:
> "Steven D'Aprano" wrote
>
> > < much sense about singleton v global>
> >
> > and think this makes their code "better". (I blame the Go4 for
> > making a
> > religion out of design patterns which exist only to work around
> > Java's
> > limitation
> From: andreeng...@gmail.com
> Date: Sun, 19 Sep 2010 20:54:01 +0200
> Subject: Re: [Tutor] FW: Can this be done easly
> To: rwob...@hotmail.com
> CC: tutor@python.org
>
> On Sun, Sep 19, 2010 at 8:33 PM, Roelof Wobben wrote:
>
>> Hello,
>>
>> I changed
On Sun, Sep 19, 2010 at 8:33 PM, Roelof Wobben wrote:
> Hello,
>
> I changed the programm to this :
>
> import unittest
> class Point:
> def __init__(self, x=0, y=0):
> self.x = x
> self.y = y
>
> class Rectangle(object):
> def __init__(self, base_point, width=0, length=0):
>
> To: tutor@python.org
> From: __pete...@web.de
> Date: Sun, 19 Sep 2010 20:07:05 +0200
> Subject: Re: [Tutor] FW: Can this be done easly
>
> Roelof Wobben wrote:
>
>> For this exercise :
>>
>> 3.Write a function named move_rect that takes a Rectangle and
On Sun, Sep 19, 2010 at 7:02 PM, Roelof Wobben wrote:
>
>
>
>
>> From: rwob...@hotmail.com
>> To: __pete...@web.de
>> Subject: RE: [Tutor] Can this be done easly
>> Date: Sun, 19 Sep 2010 17:01:22 +
>>
>>
>>
>>
>> ---
Roelof Wobben wrote:
> For this exercise :
>
> 3.Write a function named move_rect that takes a Rectangle and two
> parameters named dx and dy. It should change the location of the rectangle
> by adding dx to the x coordinate of corner and adding dy to the y
> coordinate of corner.
>
> Is this on
> From: rwob...@hotmail.com
> To: __pete...@web.de
> Subject: RE: [Tutor] Can this be done easly
> Date: Sun, 19 Sep 2010 17:01:22 +
>
>
>
>
>
>> To: tutor@python.org
>> From: __pete...@web.de
>> Date: Sun, 19
Roelof Wobben wrote:
>> Hint: why does this work:
>>
>>> def __init__(self, x=0, y=0):
>>
>> ...while this doesnt:
>>
>>> def _init_(self, base_point, width=0, length=0):
>>
>> Peter
> Maybe because base_point has no value ?
No. One __init__ has two underscores (correct) on each side, the other
"Roelof Wobben" wrote
When I change everything to this :
class Rectangle(object):
def _init_(self, base_point, width=0, length=0):
self.base_point = base_point
self.width = width
self.length = length
punt = Point(3,4)
rechthoek = Rectangle (punt,20,30)
I get this mes
"Steven D'Aprano" wrote
< much sense about singleton v global>
and think this makes their code "better". (I blame the Go4 for
making a
religion out of design patterns which exist only to work around
Java's
limitations.)
In fact the original design patterns were based around Smalltalk'
> To: tutor@python.org
> From: __pete...@web.de
> Date: Sun, 19 Sep 2010 18:04:25 +0200
> Subject: Re: [Tutor] Can this be done easly
>
> Roelof Wobben wrote:
>
>> When I change everything to this :
>
>> I get this message :
>>
>> Traceback (most recent c
Roelof Wobben wrote:
> When I change everything to this :
> I get this message :
>
> Traceback (most recent call last):
> File "C:\Users\wobben\workspace\oefeningen\src\test.py", line 13, in
>
> rechthoek = Rectangle (punt,20,30)
> TypeError: object.__new__() takes no parameters
Hint:
> Date: Sun, 19 Sep 2010 14:19:46 +0200
> From: knack...@googlemail.com
> To: tutor@python.org
> Subject: Re: [Tutor] Can this be done easly
>
> Am 19.09.2010 10:49, schrieb Roelof Wobben:
>>
>>
>> Hello,
>>
>> I have this programm :
>>
>> class Point:
>>
On Sun, 19 Sep 2010 02:50:42 am Knacktus wrote:
> Hey all,
>
> the usual explanation for the usage of a Singleton goes like this:
>
> "Use a singleton if you want to make sure, that only one instance of
> a class exists."
>
> But now I ask myself: Why should I call the constructor of a class
> more
Am 19.09.2010 10:49, schrieb Roelof Wobben:
Hello,
I have this programm :
class Point:
def __init__(self, x=0, y=0):
self.x = x
self.y = y
class Rectangle(Point):
def _init_(self, width=0, length=0):
self.width = width
self.length = length
Yo
Steven D'Aprano wrote:
> On Sat, 18 Sep 2010 07:13:13 pm Peter Otten wrote:
>
>> You should never iterate over a list or dictionary and add or remove
>> items to it at the same time. That is a recipe for disaster even if
>> it doesn't fail explicitly.
>
> That's a bit strong. It's quite possible
M. 427 wrote:
> Version 4 : (2 steps)
>
> # step 1 : list keys of unwanted rows
> sck=[] # list of single children keys in dictionary
> for k in d.keys() :
> if len(d[k]) < 2 :
> sck.append(k)
> # step 2 : delete all d rows w
Hello,
I have this programm :
class Point:
def __init__(self, x=0, y=0):
self.x = x
self.y = y
class Rectangle(Point):
def _init_(self, width=0, length=0):
self.width = width
self.length = length
punt = Point(3,4)
rechthoek = Rectang
On 09/19/10 09:39, ALAN GAULD wrote:
>> It appears that the Tk canvas widget does not support simply plotting
> a pixel.
>
> Correct, and I agree it seems odd, but in practice drawing either lines or
> ovals of one-pixel do the equivalent job - albeit a little more slowly.
More slowly and takes
Version 4 : (2 steps)
# step 1 : list keys of unwanted rows
sck=[] # list of single children keys in dictionary
for k in d.keys() :
if len(d[k]) < 2 :
sck.append(k)
# step 2 : delete all d rows whose key is listed in sck
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