From jorisvandenbossche at gmail.com  Wed Mar  1 19:10:33 2017
From: jorisvandenbossche at gmail.com (Joris Van den Bossche)
Date: Thu, 2 Mar 2017 01:10:33 +0100
Subject: [Pandas-dev] Should the sum of Series of all NaN return 0 or NaN ?
Message-ID: <CALQtMBZgcOtXNP8xmKtfGir5L9g80sFZO=7FaxJ-Fvs1w97ZYg@mail.gmail.com>

For those not aware but potentially interested, want to point out that
there is a (renewed) discussion going on about the question in the title,
see https://github.com/pandas-dev/pandas/issues/9422.


As a summary of what this is about:

The question is what the sum of a Series of all NaNs should return (which
is equivalent to an empty Series after skipping the NaNs): NaN or 0?

In [1]: s = Series([np.nan])

In [2]: s.sum(skipna=True)  # skipping NaNs is the default
Out[2]: nan or 0     <---- DISCUSSION POINT

In [3]: s.sum(skipna=False)
Out[3]: nan

The reason this is a discussion point has the following cause: the internal
nansum implementation of pandas returns NaN. But, when bottleneck is
installed, pandas will use bottlenecks implementation of nansum, which
returns 0 (for the versions >= 1.0).
Bottleneck changed the behaviour from returning NaN to returning 0 to model
it after numpy's nansum function.

This has the very annoying consequence that depending on whether bottleneck
is installed or not (which is only an optional dependency), you get a
different behaviour.

This inconsistency is bad, and should be solved, and so we have to choose
between both behaviours.
I am not going to list pro's and con's here, for that you can read the
comments in the github issues :-) (you can start here with the comments of
today:
https://github.com/pandas-dev/pandas/issues/9422#issuecomment-283502828)

Regards,
Joris
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From jeffreback at gmail.com  Tue Mar  7 12:03:01 2017
From: jeffreback at gmail.com (Jeff Reback)
Date: Tue, 7 Mar 2017 12:03:01 -0500
Subject: [Pandas-dev] appveyor
Message-ID: <CAHMnJKhYbmW3vrvrJ2c4JsMNhzBqBzqE0KCFDDmv1v7-Hp5u2w@mail.gmail.com>

I enabled a pandas-dev appveyor account.

next time you login you should be able to login using your github username
(you have to pick from the drop-down).

Hopefully the transition will work (may not on existing PR's) though. But
it looks like its working on master.

Jeff
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From wesmckinn at gmail.com  Wed Mar  8 19:17:01 2017
From: wesmckinn at gmail.com (Wes McKinney)
Date: Wed, 8 Mar 2017 19:17:01 -0500
Subject: [Pandas-dev] appveyor
In-Reply-To: <CAHMnJKhYbmW3vrvrJ2c4JsMNhzBqBzqE0KCFDDmv1v7-Hp5u2w@mail.gmail.com>
References: <CAHMnJKhYbmW3vrvrJ2c4JsMNhzBqBzqE0KCFDDmv1v7-Hp5u2w@mail.gmail.com>
Message-ID: <CAJPUwMCLKZ3WVqmkt3dG1W6fvvWSoHVYAuOhLq62U_Y17NuDZA@mail.gmail.com>

@Jeff -- did you intend for the Appveyor notifications to be sent to
pandas-dev at python.org?

On Tue, Mar 7, 2017 at 12:03 PM, Jeff Reback <jeffreback at gmail.com> wrote:
> I enabled a pandas-dev appveyor account.
>
> next time you login you should be able to login using your github username
> (you have to pick from the drop-down).
>
> Hopefully the transition will work (may not on existing PR's) though. But it
> looks like its working on master.
>
> Jeff
>
> _______________________________________________
> Pandas-dev mailing list
> Pandas-dev at python.org
> https://mail.python.org/mailman/listinfo/pandas-dev
>

From jeffreback at gmail.com  Wed Mar  8 19:21:53 2017
From: jeffreback at gmail.com (Jeff Reback)
Date: Wed, 8 Mar 2017 19:21:53 -0500
Subject: [Pandas-dev] appveyor
In-Reply-To: <CAJPUwMCLKZ3WVqmkt3dG1W6fvvWSoHVYAuOhLq62U_Y17NuDZA@mail.gmail.com>
References: <CAHMnJKhYbmW3vrvrJ2c4JsMNhzBqBzqE0KCFDDmv1v7-Hp5u2w@mail.gmail.com>
 <CAJPUwMCLKZ3WVqmkt3dG1W6fvvWSoHVYAuOhLq62U_Y17NuDZA@mail.gmail.com>
Message-ID: <0FE853B9-DB92-423C-8BA8-42A214D426D6@gmail.com>



this is the login address i used 

are you getting spurious emails?


the notification should only be sent where github sends things i think 

> On Mar 8, 2017, at 7:17 PM, Wes McKinney <wesmckinn at gmail.com> wrote:
> 
> @Jeff -- did you intend for the Appveyor notifications to be sent to
> pandas-dev at python.org?
> 
>> On Tue, Mar 7, 2017 at 12:03 PM, Jeff Reback <jeffreback at gmail.com> wrote:
>> I enabled a pandas-dev appveyor account.
>> 
>> next time you login you should be able to login using your github username
>> (you have to pick from the drop-down).
>> 
>> Hopefully the transition will work (may not on existing PR's) though. But it
>> looks like its working on master.
>> 
>> Jeff
>> 
>> _______________________________________________
>> Pandas-dev mailing list
>> Pandas-dev at python.org
>> https://mail.python.org/mailman/listinfo/pandas-dev
>> 
> _______________________________________________
> Pandas-dev mailing list
> Pandas-dev at python.org
> https://mail.python.org/mailman/listinfo/pandas-dev

From wesmckinn at gmail.com  Wed Mar  8 19:26:57 2017
From: wesmckinn at gmail.com (Wes McKinney)
Date: Wed, 8 Mar 2017 19:26:57 -0500
Subject: [Pandas-dev] appveyor
In-Reply-To: <0FE853B9-DB92-423C-8BA8-42A214D426D6@gmail.com>
References: <CAHMnJKhYbmW3vrvrJ2c4JsMNhzBqBzqE0KCFDDmv1v7-Hp5u2w@mail.gmail.com>
 <CAJPUwMCLKZ3WVqmkt3dG1W6fvvWSoHVYAuOhLq62U_Y17NuDZA@mail.gmail.com>
 <0FE853B9-DB92-423C-8BA8-42A214D426D6@gmail.com>
Message-ID: <CAJPUwMD4p8tSZqHuWMTrYnoKT5TfRjAgXQBsumu1oZv-wkgjRg@mail.gmail.com>

Yes, I'm getting build notifications. They're being caught by the list
moderator, so I haven't let them through yet

---------- Forwarded message ----------
From: AppVeyor <no-reply at appveyor.com>
To: pandas-dev at python.org
Cc:
Bcc:
Date: Thu, 09 Mar 2017 00:01:06 +0000
Subject: Build completed: pandas 1.0.49

Build pandas 1.0.49 completed

Commit 4276da9023 by stijnvanhoey on 3/8/2017 7:35 PM:
Make groupby filter running example

Configure your notification preferences


On Wed, Mar 8, 2017 at 7:21 PM, Jeff Reback <jeffreback at gmail.com> wrote:
>
>
> this is the login address i used
>
> are you getting spurious emails?
>
>
> the notification should only be sent where github sends things i think
>
>> On Mar 8, 2017, at 7:17 PM, Wes McKinney <wesmckinn at gmail.com> wrote:
>>
>> @Jeff -- did you intend for the Appveyor notifications to be sent to
>> pandas-dev at python.org?
>>
>>> On Tue, Mar 7, 2017 at 12:03 PM, Jeff Reback <jeffreback at gmail.com> wrote:
>>> I enabled a pandas-dev appveyor account.
>>>
>>> next time you login you should be able to login using your github username
>>> (you have to pick from the drop-down).
>>>
>>> Hopefully the transition will work (may not on existing PR's) though. But it
>>> looks like its working on master.
>>>
>>> Jeff
>>>
>>> _______________________________________________
>>> Pandas-dev mailing list
>>> Pandas-dev at python.org
>>> https://mail.python.org/mailman/listinfo/pandas-dev
>>>
>> _______________________________________________
>> Pandas-dev mailing list
>> Pandas-dev at python.org
>> https://mail.python.org/mailman/listinfo/pandas-dev

From jeffreback at gmail.com  Tue Mar 21 18:49:09 2017
From: jeffreback at gmail.com (Jeff Reback)
Date: Tue, 21 Mar 2017 18:49:09 -0400
Subject: [Pandas-dev] pandas daily wheels for linux / osx
Message-ID: <CAHMnJKjAKR3vUw7ScaGqtZL5oQ59_fp3cu60jbEVeP9noV+xCQ@mail.gmail.com>

We have recently enabled Travis to build daily wheels for linux & osx
(currently 2.7, 3.5, 3.6 on linux, and 3.6 on osx).

These are a snapshot of master at that time & tagged with the dev commits.

These are pushed to the same location as numpy/scipy/matplotlib daily
wheels.

you can install like this.

# install pandas wheel from master
PRE_WHEELS="
https://7933911d6844c6c53a7d-47bd50c35cd79bd838daf386af554a83.ssl.cf2.rackcdn.com
"
pip install --pre --upgrade --timeout=60 -f $PRE_WHEELS pandas

Big thank you to Matthew Brett for help setting this up!

enjoy!

Jeff
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From jeffreback at gmail.com  Mon Mar 27 15:25:17 2017
From: jeffreback at gmail.com (Jeff Reback)
Date: Mon, 27 Mar 2017 15:25:17 -0400
Subject: [Pandas-dev] developer meeting
Message-ID: <CAHMnJKgOc2zpoekaMAqgVebzzdSD7BnnYAx3oYTyjupORms38Q@mail.gmail.com>

I sent a generic link, but here it is again: http://doodle.com/poll/
acfmznfqzrhw5mhp


Ideally have a 1 hr meeting to discuss upcoming 0.20.0 release.

I fixed the poll at 2pm EST, but if not convenient lmk and we can add
another option.

Jeff
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From mailer at doodle.com  Mon Mar 27 15:21:48 2017
From: mailer at doodle.com (Jeff Reback (via Doodle))
Date: Mon, 27 Mar 2017 21:21:48 +0200 (CEST)
Subject: [Pandas-dev] Pandas Dev Meeting
Message-ID: <2133640670.4665722.1490642508847.POLL_INVITECONTACT_PARTICIPANT_INVITATION_WITH_MESSAGE@worker1.doodle.com>

Hi there,

Jeff Reback (jeffreback at gmail.com) invites you to participate in the
Doodle poll "Pandas Dev Meeting."

Bi-Monthly developer meeting
  
  As we are coming upon the 0.20.0
release. Want to have some discussion about what to include (or not
include).

Participate now
https://doodle.com/poll/acfmznfqzrhw5mhp?tmail=poll_invitecontact_participant_invitation_with_message&tlink=pollbtn

What is Doodle? Doodle is a web service that helps Jeff Reback to find
a suitable date for meeting with a group of people. Learn more about
how Doodle works.
(https://doodle.com/features?tlink=checkOutLink&tmail=poll_invitecontact_participant_invitation_with_message)

----------------------------------------------------------------------

You have received this e-mail because "Jeff Reback" has invited you to
participate in the Doodle poll "Pandas Dev Meeting."

----

Doodle is also available for iOS and Android.
----

Doodle AG, Werdstrasse 21, 8021 Z?rich
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From jeffreback at gmail.com  Wed Mar 29 07:51:07 2017
From: jeffreback at gmail.com (Jeff Reback)
Date: Wed, 29 Mar 2017 07:51:07 -0400
Subject: [Pandas-dev] Fwd: Doodle: Link for poll "Pandas Dev Meeting"
In-Reply-To: <86389388.4665730.1490642509059.POLL_ADMIN_PARTICIPATELINK@worker1.doodle.com>
References: <86389388.4665730.1490642509059.POLL_ADMIN_PARTICIPATELINK@worker1.doodle.com>
Message-ID: <CAHMnJKicwq0NaX4sktcBXQKexKjUYqrE2SdETdz9EaekTHU8Hg@mail.gmail.com>

If you have not already responded and want to participate, please do so.

Jeff

---------- Forwarded message ----------
From: Doodle <mailer at doodle.com>
Date: Mon, Mar 27, 2017 at 3:21 PM
Subject: Doodle: Link for poll "Pandas Dev Meeting"
To: Jeff Reback <jeffreback at gmail.com>


Hi Jeff Reback,

You have initiated a poll "Pandas Dev Meeting" at Doodle. The link to
your poll is:

http://doodle.com/poll/acfmznfqzrhw5mhp

Share this link with all those who should cast their votes. Do not
forget to cast your vote, too.

(If you did not initiate this poll, somebody must accidentally have
used your e-mail address; simply ignore this e-mail, please.)

- Your Doodle Team

----

Doodle AG, Werdstrasse 21, 8021 Z?rich
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From jeffreback at gmail.com  Wed Mar 29 19:11:12 2017
From: jeffreback at gmail.com (Jeff Reback)
Date: Wed, 29 Mar 2017 19:11:12 -0400
Subject: [Pandas-dev] Fwd: Doodle: Link for poll "Pandas Dev Meeting"
In-Reply-To: <CAHMnJKicwq0NaX4sktcBXQKexKjUYqrE2SdETdz9EaekTHU8Hg@mail.gmail.com>
References: <86389388.4665730.1490642509059.POLL_ADMIN_PARTICIPATELINK@worker1.doodle.com>
 <CAHMnJKicwq0NaX4sktcBXQKexKjUYqrE2SdETdz9EaekTHU8Hg@mail.gmail.com>
Message-ID: <CAHMnJKhRObEc4sjoS8K92T5JLS=XU6RYG2eh_poJDOsOKparZg@mail.gmail.com>

Thats for everyone responding. So it looks like Mon, Tues, or Thurs at 2pm
work for almost everyone.

Let's pick Thursday at 2pm EDT.

Here is a link the docs and some PR's I like like to discuss. Feel free to
edit.

https://docs.google.com/document/d/1tGbTiYORHiSPgVMXawiweGJlBw5dO
kVJLY-licoBmBU/edit#

Jeff

---------- Forwarded message ----------
From: Jeff Reback <jeffreback at gmail.com>
Date: Wed, Mar 29, 2017 at 7:51 AM
Subject: Fwd: Doodle: Link for poll "Pandas Dev Meeting"
To: "pandas-dev at python.org" <pandas-dev at python.org>


If you have not already responded and want to participate, please do so.

Jeff

---------- Forwarded message ----------
From: Doodle <mailer at doodle.com>
Date: Mon, Mar 27, 2017 at 3:21 PM
Subject: Doodle: Link for poll "Pandas Dev Meeting"
To: Jeff Reback <jeffreback at gmail.com>


Hi Jeff Reback,

You have initiated a poll "Pandas Dev Meeting" at Doodle. The link to
your poll is:

http://doodle.com/poll/acfmznfqzrhw5mhp

Share this link with all those who should cast their votes. Do not
forget to cast your vote, too.

(If you did not initiate this poll, somebody must accidentally have
used your e-mail address; simply ignore this e-mail, please.)

- Your Doodle Team

----

Doodle AG, Werdstrasse 21, 8021 Z?rich
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