[Pandas-dev] Help replacing workflows that used DataFrame.select

[Paul Hobson]

Hey folks,

I noticed that DataFrame.select is now deprecated in favor of
DataFrame.loc[index.map(selector_fxn)]

PR: https://github.com/pandas-dev/pandas/pull/17633
Issue: https://github.com/pandas-dev/pandas/issues/12401

I have a lot of work flows that look something like this:

    res = (
        data.resample(freq)
            .agg(agg_dict)
            .pipe(fxn_that_adds_many_cols)
            .select(complex_fxn_that_selects_a_few_cols, axis='columns')
    )

It's not immediately clear to me how to access all of the e.g., columns in
the middle or at the end of a chain of dataframe operations.

Any tips?

-Paul
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/pandas-dev/attachments/20171127/c25a3fc1/attachment.html>