Static Variables in Python?

[Cliff Wells]

On Mon, 2006-07-31 at 13:37 -0700, Cliff Wells wrote:
> On Mon, 2006-07-31 at 13:02 -0700, Cliff Wells wrote:
> 
> 
> > @attrs ( bits = [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ] )
> 
> Also, IMO, it's a bit more readable to write:
> 
> bits = [ 0 for i in range ( 16 ) ]

Or even:

bits = [ 0 ] * 16

Just be careful to only use that style when the contents of the array
are non-mutable.  The list comp does the right thing in that case (at
risk of going on a tangent):

Right:
>>> bits = [ { } for i in range ( 16 ) ]
>>> bits
[{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}]
>>> bits [ 0 ][ 'a' ] = 1
>>> bits
[{'a': 1}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}]

Wrong:
>>> bits = [ {} ] * 16
>>> bits [ 0 ][ 'a' ] = 1
>>> bits
[{'a': 1}, {'a': 1}, {'a': 1}, {'a': 1}, {'a': 1}, {'a': 1}, {'a': 1},
{'a': 1}, {'a': 1}, {'a': 1}, {'a': 1}, {'a': 1}, {'a': 1}, {'a': 1},
{'a': 1}, {'a': 1}]
>>>


Regards,
Cliff