Binding a variable?
Steven D'Aprano
steve at REMOVETHIScyber.com.au
Sat Oct 22 19:52:10 EDT 2005
On Fri, 21 Oct 2005 13:33:18 -0400, Mike Meyer wrote:
> Paul Dale <pd at traxon.com> writes:
>
>> Hi everyone,
>>
>> Is it possible to bind a list member or variable to a variable such that
>>
>> temp = 5
>>
>> list = [ temp ]
Don't use the names of built-in functions as variables.
>> temp == 6
>>
>> list
>>
>> would show
>>
>> list = [ 6 ]
>
> No. You need to either put a mutable in the list, or subclass list so
> that indexing gets the value, looks it up in the appropriate
> namespace, and returns that value.
Or something even conceptually simpler than having to muck about with
looking up different namespaces:
class Data:
def __init__(self, obj):
self.value = obj
def __str__(self):
return self.value
temp = Data(5)
L = [temp]
print L
will give 5.
temp.value = 6
print L
will now give 6.
--
Steven.
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