is list always with reference ?

[Hans Nowak]

quite black wrote:
> Hi,all~
> 
>     when we build up a list(for example named list1) and write this line:
> 
> list2=list1
> 
> So, list2 is reference with list1, alright ? 

Sort of. list1 and list2 are names for the same object. This is true for all 
Python objects, by the way, not just lists.

> What I want to know is if 
> all modifications on list1 will affect list2 ? I say "All" here.

Yes, since they are the same object.

HTH,

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