On Wed, Sep 01, 2010 at 09:14:50AM +0100, Alan Gauld wrote:
> It is an abbreviation for class. The first parameter to new() must be a
> refernce to the class.
> It is similar to self in an instance method, where the first parameter
> is a reference
> to the instance.
Thanks a lot.
With warm re
Alan Gauld wrote:
> "Payal" wrote
>> b. What does type(_) mean?
>
> The _ refers to the last evaluated result, in this case the tuple
> (1,2).
> Its a shorthand trick, I think it only works in the interpreter, I
> don't like
> it and never use it, but many do. (FWIW Perl has a similar shortcut
>
"Payal" wrote
>>> class A(tuple):
... def __new__(cls, a, b):
... return tuple.__new__(cls, (a, b))
a. I have seen this cls before, what does it mean?
It is an abbreviation for class. The first parameter to new() must be
a refernce to the class.
It is similar to self in an
On Tue, Aug 31, 2010 at 08:27:10AM +0200, Peter Otten wrote:
> Subclasses of immutable types, e. g. tuple:
That was one great example, thanks. Some doubts,
a. I have seen this cls before, what does it mean?
b. What does type(_) mean?
Thanks a lot in advance.
With warm regards,
-Payal
--
> >>
Payal wrote:
> Can someone please give a very simple example of using __new__ wherein
> __init__ cannot be used?
Subclasses of immutable types, e. g. tuple:
>>> class A(tuple):
... def __init__(self, a, b):
... pass
...
>>> a = A(1,2)
Traceback (most recent call last):
File "",
Hi all,
Can someone please give a very simple example of using __new__ wherein
__init__ cannot be used?
With warm regards,
-Payal
--
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