Modifying Class Object
Alf P. Steinbach
alfps at start.no
Thu Feb 11 09:09:04 CET 2010
* I V:
> On Thu, 11 Feb 2010 07:37:35 +0100, Alf P. Steinbach wrote:
>> * Steven D'Aprano:
>>> s = 
>>> t = s # Binds the name t to the object bound to the name s.
>>> t = 2 # Changes the object bound to the name t print(s) #
>>> Checks the object via the original name.
>>> Notice that your version describes what happens according to some
>>> implementation, below the level of the Python virtual machine.
>> Consider just the
>> assert( t is not s )
>> t = s
>> Does this change anything at all in the computer's memory?
>> If it doesn't, then it has no effect whatsoever.
>> But since it does have an effect, a memory change has been effected.
> I don't think your disagreeing with Steven here - by talking about "the
> computers memory," it's clear that you are talking about the details of
> an implementation of python, not the semantics of python itself. Unless,
> of course, you are under the misapprehension that "the computer's memory"
> is relevant to the python language, rather than the particular
> implementation. Python itself has nothing to do with "computers" or
> "memory"; these are mere implementation details.
You know, the programming language that doesn't need computers: Python.
- Alf (not sure how to read your posting, but it's funny anyhow)
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