[Tutor] attribute error

[Sara Johnson]

I scrapped that other attempt.  I keep hitting brick walls.

However, is there an indentation error here?  I may just be too frustrated to see it.

for key in skeys:
        fracmiss=1.*numberMissing(z[key].values())/nsites #note decimal multiplication, 1.*
        outstring="%s has %4.1f%% missing" % (key,100*fracmiss)
        if fracmiss>0.:
                print outstring





----- Original Message ----
From: Bob Gailer <bgailer at alum.rpi.edu>
To: Sara Johnson <sarliz73 at gmail.com>
Cc: Python <tutor at python.org>
Sent: Saturday, July 28, 2007 10:14:58 PM
Subject: Re: [Tutor] attribute error


Sara Johnson wrote:
> I thought 'sort()' was a function you could use as long as the dict or 
> key had some value.  When is this not right?
Please give us some context for the question. Code fragment, traceback.

sort is a method of mutable sequence types (lists, ...)

myList = [1, 3, 2]
myList.sort() # returns None
print myList
[1, 2, 3]


-- 
Bob Gailer
510-978-4454 Oakland, CA
919-636-4239 Chapel Hill, NC


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