HC Library and *attributes parameter

[Efrat Regev]

Hello,

I'm a really new (and quite bad) Python programmer. While trying to use
the HC HTML-Generating library, I couldn't figure out how to set a table's
width to some given width. Moreover, the constructors interface is

def __init__(self, object = None, align = None, border = None, cellspacing =
None, cellpaddding = None, *attributes)

So, what does *attribute stand for (being a C++ programmer, it looks
like a pointer, probably not the case). Is it like the C++ ellipsis? If so,
how can
I use it?

Thanks,

Efrat

[Peter Hansen]

Re: HC Library and *attributes parameter

Efrat Regev wrote:[color=blue]
> def __init__(self, object = None, align = None, border = None, cellspacing =
> None, cellpaddding = None, *attributes)
>
> So, what does *attribute stand for (being a C++ programmer, it looks
> like a pointer, probably not the case). Is it like the C++ ellipsis? If so,
> how can
> I use it?[/color]

Your guess is pretty close. See here for details:

http://docs.python.org/ref/calls.html#calls

-Peter

[Steve Holden]

Re: HC Library and *attributes parameter

Efrat Regev wrote:[color=blue]
> Hello,
>
> I'm a really new (and quite bad) Python programmer. While trying to use
> the HC HTML-Generating library, I couldn't figure out how to set a table's
> width to some given width. Moreover, the constructors interface is
>
> def __init__(self, object = None, align = None, border = None, cellspacing =
> None, cellpaddding = None, *attributes)
>
> So, what does *attribute stand for (being a C++ programmer, it looks
> like a pointer, probably not the case). Is it like the C++ ellipsis? If so,
> how can
> I use it?
>[/color]
The notation "*attribute " in the function signature denotes a variable
number of positional arguments, which are provided to the function body
as a tuple named attribute.
[color=blue][color=green][color=darkred]
>>> def f1(a, b, *c):[/color][/color][/color]
... print "a:", a
... print "b:", b
... print "c:", c
...[color=blue][color=green][color=darkred]
>>> f1(1, 2, 3, 4, 5)[/color][/color][/color]
a: 1
b: 2
c: (3, 4, 5)[color=blue][color=green][color=darkred]
>>> f1('one', 'two')[/color][/color][/color]
a: one
b: two
c: ()[color=blue][color=green][color=darkred]
>>>[/color][/color][/color]

Much easier than varargs in C!

The notation **kw similarly denotes a variable number of keyword
arguments, which are provided to the function body as a dictionary named kw.

regards
Steve

[Efrat Regev]

Re: HC Library and *attributes parameter


"Efrat Regev" <efrat_regev@ya hoo.com> wrote in message
news:5padnc5DoZ vl66zfRVn-vA@adelphia.com ...[color=blue]
> Hello,
> ...[/color]

Many thanks for the useful replies!!