On Sat, Nov 30, 2013 at 1:40 PM, richard kappler <richkapp...@gmail.com> wrote:
>
>
> disk usage(total=302264549376, used=73844322304, free=213066088448,
> percent=24.4)
>
> So if I want only the number following percent, I get that I need to convert
> this to a built in type and do some split and strip, but that's where I'm
> floundering. Might I get a little guidance on this please?
disk_usage returns a subclass of tuple, created by
collections.namedtuple. The subclass adds a property for each tuple
item. This helps code to be more self-documenting without sacrificing
the efficiency of tuples.
usage = collections.namedtuple(
'usage', 'total used free percent')
>>> usage.__base__
<type 'tuple'>
>>> type(usage.percent)
<type 'property'>
The property fget for each tuple item is an operator.itemgetter instance:
>>> type(usage.percent.fget)
<type 'operator.itemgetter'>
For example:
u = usage(302264549376, 73844322304, 213066088448, 24.4)
fget = operator.itemgetter(3)
>>> u.percent
24.4
>>> fget(u)
24.4
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