Mailman 3 May 2019 - Pandas-dev

Pandas dev sprint June 27-30 @ Nashville
by Joris Van den Bossche June 11, 2019

June 11, 2019

Dear all, We are planning to do a pandas sprint end of June in Nashville (Tennessee, USA): June 27-30. We will be meeting with some of the core devs (so not a sprint to jump-start newcomers in this case), but sending this to the mailing list to invite other pandas (or related libraries) contributors. The exact planning of the sprint still needs to be discussed, but we will probably be hacking and discussing on pandas, extension arrays, next versions of pandas, etc. *So if you are interested, let me know something! *We want to keep the number of participants somewhat limited, and also need to plan the location and funding, so please state your interest *before May 30*. If you would like to participate, but not sure if you would fit at such a sprint, don't hesitate to mail me personally. Best, Joris

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welcome to new committers
by Jeff Reback May 30, 2019

May 30, 2019

I would like to warmly welcome 2 new committees to the pandas core team: Simon Hawkins (simonjayhawkins) Terji Peterson (topper-123) They have consistently pushed quality PRs and have helped out other contributors. We hope that they can help make pandas even better going forward. Welcome and thanks Jeff

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Was the range() function ever created in Pandas?
by C W May 27, 2019

May 27, 2019

Hello all, I am want to calculate the range of a vector. I saw that someone asked for range() in 2011, but was it ever created? https://github.com/pandas-dev/pandas/issues/288 Response at the time was to use df.describe(). But df.describe() gives all the 5-number summary statistics, but I DON'T WANT wall the extra stuff I didn't ask for. I was expecting a numerical number. I can use that to feed into another function. It exists in Matlab and R, why not in Python? I'm quite frustrated every time I need to calculate the range. Thanks in advance.

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Skyline queries
by Max Halford May 21, 2019

May 21, 2019

Hello everyone, I was wondering if there was any interest to code a skyline operator <https://www.wikiwand.com/en/Skyline_operator> in pandas? I just wrote a short blog post <https://maxhalford.github.io/blog/skyline-queries-in-python/> on the subject. I can't decide if this is part of pandas' scope, hence the email. However skyline are useful for many data mining applications. The idea would be to have .skyline(to_minimize, to_maximize) function where a user could specify which attributes he wishes to minimize and maximize. The function would return the subset of rows that belong to the skyline (which is slightly different from what I did in my blog post). Kind regards. -- Max Halford +336 28 25 13 38

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Pandas development hangout - Thursday May 16 at 16:30 UTC
by Joris Van den Bossche May 16, 2019

May 16, 2019

Hi everyone, We're having a dev chat this week Thursday to check the status of the coming releases and other discussion items. It takes place Thursday (May 16) at 16:30 UTC (I *think* this is 9:30 Pacific / 12:30 Eastern / 17:30 UTC / 18:30 central Europe). All are welcome to attend! Calendar invite: https://calendar.google.com/event?action=TEMPLATE&tmeid=N2VscjBkZnA2OWtmMzl… <https://calendar.google.com/event?action=TEMPLATE&tmeid=N2Z0ODh0NzdyMG1mMTF…> (will update later with video meeting link) Agenda/Minutes: https://docs.google.com/document/d/1tGbTiYORHiSPgVMXawiweGJlBw5dOkVJLY-lico… Joris

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Submitting PR for the first time
by Eoin C May 2, 2019

May 2, 2019

Hi, I would like to submit my first PR for the Pandas project. My Github user name is eoincondron and the PR is related to issue #26210. How do I get started? Regards, Eoin

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