On 2018-06-16 17:38, ip.b...@gmail.com wrote:
Hi everyone,
I'm intrigued by the output of the following code, which was totally contrary
to my expectations. Can someone tell me what is happening?
myName = "Kevin"
id(myName)
47406848
id(myName[0])
36308576
id(myName[1])
2476000
I expected myName[0] to be located at the same memory location as the myName
variable itself. I also expected myName[1] to be located immediately after
myName[0].
The 'id' function returns an integer ID for a value/object. The only
guarantee is that no 2 values have the same ID at the same time.
It is _not_ an address.
myName is bound to the string "Kevin", and id(myName) tells you the ID
of that string.
myName[0] returns the string "K", and id(myName[0]) tells you the ID of
that string.
(As a side note, The CPython implementation, which is written in C,
happens to use the address, but the Jython implementation, which is
written in Java, doesn't.)
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