[Tutor] How memory works in Python

[Cal97g .]

What is happening is that python sees you have some small variables which
are identical. As these variables are immutable python knows they cannot be
changed.

Instead of creating a new memory location for each variable, python
references the same memory location for both items.

This is why your the id for (x1, y1) + (x2, y2) is identical.

Many Thanks

Callam Delaney


On Tue, 7 Jan 2020 at 14:45, Deepak Dixit <deepakdixit0001 at gmail.com> wrote:

> Hi Team,
>
> I was thinking on the memory management in Python but little confused here
> because when I assign same value of type number and string to different
> variable, it points to same memory but when I do it for list or tuple it
> points to different memory locations.
>
> Here is the code and the output:
>
> # test.py
> x1 = 10
> y1 = 10
>
> x2 = "Hello"
> y2 = "Hello"
>
> x3 = [10]
> y3 = [10]
>
> x4 = (10,)
> y4 = (10,)
>
> print id(x1) == id(y1)
> print id(x2) == id(y2)
> print id(x3) == id(y3)
> print id(x4) == id(y4)
>
> deepak at Deepak-PC:~$ python test.py
> True
> True
> False
> False
>
>
> Can you help me to understand how it works?
> --
>
>
> *With Regards,*
> *Deepak Kumar Dixit*
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