On Sun, May 15, 2016 at 7:07 AM David Shi <davidg...@yahoo.co.uk> wrote:
> Hello, Michael, > > Pandas GroupBy does not behave consistently. > > Last time, when we had conversation, I used grouby. It works well. > > Now, I thought to re-write the program, so that I can end up with a clean > script. > > But, the problem is that a lot of columns are missing after groupby > application. > > Any idea? > I'd guess that the columns lost after a groupby had an inappropriate datatype for the operation you were doing. If you'd like a more thorough response, you'll need to post the code you tried and the results you got. -- https://mail.python.org/mailman/listinfo/python-list
