Hi - I was helped the other day in an attempt to scrape and save a simple
web page. I'm using what I learned and trying another. It should be very
simple, but I only get the first row of names saved.
Can anybody help with an explanation?
(It's a public list of names of doctors with knows conne
Hi All,
Could you explain me how does it work, pls?
==
>>>r = ''
>>>for c in 'abcd':
r = c + r
...
...
>>>r
'dcba'
==
Best Regards,
Neo Vector
___
Tutor maillist - Tutor@python
On Mon, Jan 03, 2011 at 10:52:26PM +0800, Neo Vector wrote:
> Hi All,
Hello,
> Could you explain me how does it work, pls?
Sure, I'm not telling you how that works. However, I'll alter your code snippet
a little bit and see if you can understand after that.
> ==
> >>>
On Mon, Jan 03, 2011 at 08:32:18PM +0530, Shrivats wrote:
> On Mon, Jan 03, 2011 at 10:52:26PM +0800, Neo Vector wrote:
> > Hi All,
> Hello,
> > Could you explain me how does it work, pls?
>
> Sure, I'm not telling you how that works. However, I'll alter your code
> snippet
> a little bit and se
"Neo Vector" wrote
Could you explain me how does it work, pls?
==
r = ''
r is an empty string
for c in 'abcd':
c takes the value of each letter in turn
r = c + r
strings can be added such that the result is the
concatenation of the two strings.
- Original Message -
From: "Patty"
To: "Alan Gauld"
Sent: Monday, January 03, 2011 9:05 AM
Subject: Re: [Tutor] How does it work?
Hi Folks - I read this code and tried to parse it as a pop quiz for myself
;) and have a question, maybe 2 clarifications, below:
- Original Mess
On 01/-10/-28163 02:59 PM, Patty wrote:
for c in 'abcd':
..
When I first looked at this - I thought that the variable 'c' would
have had to be initialized
first earlier in the program. And I thought that the programmer would
input a single char or a single space. I wasn't thinking counti
"Patty" wrote
for c in 'abcd':
c takes the value of each letter in turn
When I first looked at this - I thought that the variable 'c' would
have had to be initialized first earlier in the program.
It is initialized earluier - in the for statement, each time through
the
loop it gets r
Yes, I knew there was something I wasn't getting. This is the explanation I
was looking for - and I'm sorry about the incorrect indentation. And I
agree with Alan that 'foreach' would have been a good name for this type of
loop. I need to sort out 'loop structures' in my notes and read up on
I've got a csv file that contains two data fields, the short name of a
month and an integer. I'm experimenting with pylab and ipython to get
a feel for how pylab works. I'm able to generate a bar graph from my
data, but there are two problems with it:
1. I don't want "2011" appended to the mont
I'm just have a little fun here, but I bet that comments will help
further elighten me on the subtleties of python.
consider the following console session:
>>> L = ['foo','bar']
>>> locals()[L[0]] = L[1]
>>> foo
'bar'
>>> 'foobar' in locals()
False
>>> 'foo' in locals()
True
>>> locals()
{'__built
"Tim Johnson" wrote
consider the following console session:
L = ['foo','bar']
locals()[L[0]] = L[1]
foo
'bar'
locals()
{'__builtins__': , 'L': ['foo',
'bar'], '__package__': None, '__name__': '__main__', 'foo': 'bar',
'__doc__': None}
I could initialize variables in a local scope, or I co
Tim Johnson wrote:
I'm just have a little fun here, but I bet that comments will help
further elighten me on the subtleties of python.
consider the following console session:
L = ['foo','bar']
locals()[L[0]] = L[1]
This will not do what you think it does. In general, local variables are
not
* Steven D'Aprano [110103 15:03]:
> Tim Johnson wrote:
>> I'm just have a little fun here, but I bet that comments will help
>> further elighten me on the subtleties of python.
>>
>> consider the following console session:
> L = ['foo','bar']
> locals()[L[0]] = L[1]
>
> This will not do wh
* Alan Gauld [110103 14:47]:
>
> "Tim Johnson" wrote
>
>> consider the following console session:
> L = ['foo','bar']
> locals()[L[0]] = L[1]
> foo
>> 'bar'
> locals()
>> {'__builtins__': , 'L': ['foo',
>> 'bar'], '__package__': None, '__name__': '__main__', 'foo': 'bar',
>> '__do
Hi all,
I have a solitaire game in which I use a "Pile" class. This class is
meant to hold a bunch of cards, so I subclass it for the deck, the ace
stacks, and the seven main stacks, defining rules and methods for each
but also relying on the parent Pile class's methods and attributes.
However, I k
"Tim Johnson" wrote
Now, Alan, do you know anything about PHP? If you do, can you
comment on the PHP extract() function?
I know enough basic PHP to read a page with code in it and
get the general drift. I've never written a line of it and have
learned enough about it that I don't want to
"Alex Hall" wrote
class parent(object):
def __init__(self, l=None):
if l is None: l=[]
l is a local variable inside init().
You wanted self.l...
HTH,
--
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/
___
Tutor ma
On 4 January 2011 00:47, Alex Hall wrote:
> class parent(object):
> def __init__(self, l=None):
> if l is None: l=[]
>
Missing "self". Perhaps you meant:
class parent(object):
def __init__(self, l=None):
if l is None: self.l=[]
else: self.l=l
Walter
__
On Mon, Jan 3, 2011 at 6:47 PM, Alex Hall wrote:
> Hi all,
> I have a solitaire game in which I use a "Pile" class. This class is
> meant to hold a bunch of cards, so I subclass it for the deck, the ace
> stacks, and the seven main stacks, defining rules and methods for each
> but also relying on
On Mon, Jan 3, 2011 at 7:47 PM, Alex Hall wrote:
> Hi all,
> I have a solitaire game in which I use a "Pile" class. This class is
> meant to hold a bunch of cards, so I subclass it for the deck, the ace
> stacks, and the seven main stacks, defining rules and methods for each
> but also relying on
On 1/3/11, Wayne Werner wrote:
> On Mon, Jan 3, 2011 at 6:47 PM, Alex Hall wrote:
>
>> Hi all,
>> I have a solitaire game in which I use a "Pile" class. This class is
>> meant to hold a bunch of cards, so I subclass it for the deck, the ace
>> stacks, and the seven main stacks, defining rules and
Sorry, my last post was too hasty. You also had a problem calling super.
It should be like this:
class parent(object):
def __init__(self, l=None):
if l is None: self.l=[]
else: self.l=l
class child(parent):
def __init__(self, *args, **kwords):
super(child, self).__init__(*args, **kwor
On 1/3/11, Walter Prins wrote:
> Sorry, my last post was too hasty. You also had a problem calling super.
> It should be like this:
>
> class parent(object):
> def __init__(self, l=None):
>if l is None: self.l=[]
>else: self.l=l
>
> class child(parent):
> def __init__(self, *args, **kwo
On Tue, Jan 4, 2011 at 2:06 AM, Alan Gauld wrote:
>
> "Tim Johnson" wrote
>
>> Now, Alan, do you know anything about PHP? If you do, can you
>> comment on the PHP extract() function?
>
> I know enough basic PHP to read a page with code in it and get the general
> drift. I've never written a lin
On 4 January 2011 01:16, Vern Ceder wrote:
> I believe you need to pass the object both to super() and to the method
> itself, as in:
>
> super(parent, self).__init__(self, *args, **kwords)
>
> See the example at
> http://docs.python.org/library/functions.html?highlight=super#super
>
> HTH,
>
> V
* Hugo Arts [110103 17:12]:
> On Tue, Jan 4, 2011 at 2:06 AM, Alan Gauld wrote:
> >
> > "Tim Johnson" wrote
> >
> >> Now, Alan, do you know anything about PHP? If you do, can you
> >> comment on the PHP extract() function?
> >
> > I know enough basic PHP to read a page with code in it and get
27 matches
Mail list logo
