Mailman 3 August 2017 - Pandas-dev

Benchmark updates
by Tom Augspurger Sept. 6, 2017

Sept. 6, 2017

Hi everyone, I did some work on the benchmark running & publishing yesterday. The results are now hosted at http://pandas.pydata.org/speed/, so pandas' are at http://pandas.pydata.org/speed/pandas. An RSS feed of regressions is available at http://pandas.pydata.org/speed/pandas/regressions.xml. I plan to track that and manually open issues if they seem legitimate. The runs are now triggered and monitored by Apache Airflow (instead of the cron job I had setup). This gives us a nice dashboard with the ability to view logs and see when benchmarks fail (and eventually email alerts). The dashboard isn't exposed publicly. If you have SSH access to the benchmark server, you can create a tunnel to port 8080 ssh -L 8080:localhost:8080 pandas(a)panda.likescandy.com Tom

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Make the underlying data structure of a sparse dataframe an sparse matrix instead of sparse series
by Siddarth Sen Aug. 31, 2017

Aug. 31, 2017

Hi I would like to consider the option of converting the underlying structure of a sparse Dataframe to a sparse matrix instead of multiple sparse series in case all the columns of the Dataframe are of the same dtype. This will make row/column slicing of the Dataframe much faster that what it is currently.

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August 2017 Developer Meeting
by Tom Augspurger Aug. 18, 2017

Aug. 18, 2017

Hi all, We're holding a developer meeting at 2:00 PM EST / 6:00 PM UTC today. You're welcome to join at https://plus.google.com/hangouts/_/calendar/dG9tLmF1Z3NwdXJnZXI4OEBnbWFpbC5… or view the minutes at https://docs.google.com/document/d/1tGbTiYORHiSPgVMXawiweGJlBw5dOkVJLY-lico… Tom

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