element-wise iteration over subgroups fails

[mattharrison]

Am trying to iterate over elements in a subgroup of a data frame and get a keyerror:

(Pdb) [x for x in group.ix]
*** KeyError: 0
(Pdb) len(group)
7

Element-wise iteration over the parent data frame works fine.

[wesm]

What elements? What you wrote is not a supported part of the API:

[x for x in group.ix]

I'm actually surprised that works anywhere (I guess it works by accident)

[wesm]

If you want to iterate over the rows (as Series objects), I'm adding a method to do it. In the meantime, you can do;

for k in group.index:
    x = group.xs(k)

[wesm]

The new DataFrame.iterrows iterator (in the current revision, will be part of the 0.7.0 release) does that you're looking for I believe.