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Re: variable vs. object

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On Sunday, 29 November 2015 22:06:58 UTC-4, fl  wrote:
> Hi,
> 
> I read several parts on line about Python that everything in Python is an 
> object. Yes, it is a key difference with other languages. Then, I read a page
> it says variables: global and local variable at:
> 
> http://www.tutorialspoint.com/python/python_functions.htm
> 
> 
> I have a question that whether variables are objects?
> 
> For example,
> 
> a=10
> 
> 'a' is an integer. Is it an object too?
> 
> Thanks,

In Python, a "variable" is a name given to an object.  In Python, the "=" sign is used to assign a name to an object: the name is on the left-hand side, and the object is on the right hand side.   Multiple names can be assigned to the same object.  In the example you gave, "a" is a name given to the object "10" which is an integer.    

If you do:

a = 10
b = a
a = "hello"

b will be 10.  b was just another name given to object 10 to which the name "a" was referring to at that point, even though we decided later that a should refer to the string "hello" (which is an object).

André

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variable vs. object fl <rxjwg98@gmail.com> - 2015-11-29 18:06 -0800
  Re: variable vs. object Joel Goldstick <joel.goldstick@gmail.com> - 2015-11-29 21:16 -0500
  Re: variable vs. object André Roberge <andre.roberge@gmail.com> - 2015-11-29 18:24 -0800
    Re: variable vs. object Ben Finney <ben+python@benfinney.id.au> - 2015-11-30 13:45 +1100
  Re: variable vs. object Ben Finney <ben+python@benfinney.id.au> - 2015-11-30 13:41 +1100
  Re: variable vs. object Marko Rauhamaa <marko@pacujo.net> - 2015-11-30 07:28 +0200
  Re: variable vs. object Nagy László Zsolt <gandalf@shopzeus.com> - 2015-11-30 09:09 +0100
  Re: variable vs. object Chris Angelico <rosuav@gmail.com> - 2015-11-30 19:19 +1100

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