Understanding python functions - Instant Python tutorial
gagsl-py2 at yahoo.com.ar
Sat Jul 14 03:20:06 CEST 2007
En Fri, 13 Jul 2007 13:41:39 -0300, Chris Carlen
<crcarleRemoveThis at BOGUSsandia.gov> escribió:
> Ben Finney wrote:
>> Some languages have "variables", which act like boxes that have names
>> etched on the side. Once created, the box can contain an object, and
>> it can be inspected while in the box; to change the variable, you
>> throw out the object and put a different object in the same box.
> Yes, so y = x takes a copy of the stuff in the x box and puts it in the
> y box. Which is what really happens in the hardware.
At least on some hardware, yes. Python namespaces are more like
associative memories: you bind a tag (name) to a value, they have constant
access time... But the real gain comes when you don't have to explicitely
think step by step on *how* to do things, and can concentrate on a more
abstract layer and say *what* you want to be done.
> I get it. But I don't like it. Yet. Not sure how this will grow on me.
> A great deal of help, thanks. Excellent explanation. Wow. This is
> strange. A part of me wants to run and hide under the nearest 8-bit
> microcontroller. But I will continue learning Python.
I think you will like it in the near future. But for someone coming from
the microcontroller world, used to think closely in terms of the
implementation, this may be a big paradigm shift.
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