[Tutor] Don't understand this class/constructor call syntax

[dave]

Yes that is roughly what I meant.  GNU Radio uses a lot of sub-classing--if
this is the correct term.  For example all blocks inherit hier_block2 which
has methods such as connect for connecting two blocks together.  I wondered if
the instance named self wasn't being passed as a replacement for the implicit
self parameter rather than in place of the pass_as_USRP=True parameter.

Steven D'Aprano also replied on this subject and if I understand him, then it
would require a special syntax that is not present in the GNU Radio code.

Dave





On Mon, 25 Jul 2011 08:08:54 +0100, Alan Gauld wrote
> dave wrote:
> > Is it even possible to replace the implicit self argument of the initializer
> > by passing something else?  If so, what would be the syntax.
> 
> Im not sure  this is what you mean but...
> 
> When you call a method on an object like:
> 
> class MyClass:
>     def aMethod(self,spam): pass
> 
> anObject= MyClass()
> anObject.aMethod(42)
> 
> You could replace the last line with:
> 
> MyClass.aMethod(anObject, 42)
> 
> This explicitly specifies the value of self in aMethod()
> 
> So you could in theory pass any object into the method,
> although in most cases it would result in an error.
> 
> Is that what you mean?
> 
> Alan G.
> 
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