[Tutor] attribute error

[Alan Gauld]

"Sara Johnson" <sarliz73 at yahoo.com> wrote

Is this the correct traceback?  Output okay except it will not sort 
alphabetically.
****************
Traceback (most recent call last):
  File "./mymods.py", line 83, in ?
    outfile2.sort()
AttributeError: 'file' object has no attribute 'sort'
*********************

If its the error you are asking about then yes it will be the correct 
traceback.
Now what do you not understand?
The error tells you that the object outfile2 has no attribute sort.

> Here's the code.

Actually the code below is not the code thats producing the error 
since
the call to outfile2.sort() is not there. However it does show that 
outfile2
is a file and files do not have a sort attribute so the error is 
correct.

But without knowing what you are trying to sort I can't go any 
further.

Alan G.

************
#reverse the dictionary of dictionaries, making new dictonary z:
z={} #initialize empty dictionary
skeys=h[keys[0]].keys() #get the "sub-keys"
for i in skeys: #use sub-keys as new main-keys
        z[i]={}
        for j in keys: #use main-keys as new sub-keys
                z[i][j]=h[j][i]
#use the new dictionary to find number of missing values:
print "\n fraction of sites with missing measurements:"
nsites=len(h.keys())
outfile2=open('missmeas.dat','w')
for key in skeys:
        fracmiss=1.*numberMissing(z[key].values())/nsites
        outstring="%s has %4.1f%% missing" % (key,100*fracmiss)
        if fracmiss>0.:
                print outstring