From jep200404 at columbus.rr.com  Tue Mar  1 16:36:02 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Tue, 1 Mar 2016 16:36:02 -0500
Subject: [CentralOH] Wednesday Lunch 2016-03-02 11:30 @ Tadka
Message-ID: <20160301163602.5fe7d1b8.jep200404@columbus.rr.com>

Sorry for the late notice

Wednesday Python Lunch at Tadka                                               
                                                                                
March 2, 2016, 11:30 a.m.                                                    
                                                                                
Tadka Indian Cuisine                                                         
3535 West Dublin Granville Road                                              
Columbus, OH 43235                                                           
(south corner of SR-161 and Allister Way/Sawmill Place Blvd,
two traffic lights east of Sawmill)                                                      
                                                                                
We'll be meeting for good food and good company. Join us to talk Python,     
programming, or anything else!

From eric at intellovations.com  Tue Mar  1 16:45:31 2016
From: eric at intellovations.com (Eric Floehr)
Date: Tue, 1 Mar 2016 16:45:31 -0500
Subject: [CentralOH] Wednesday Lunch 2016-03-02 11:30 @ Tadka
In-Reply-To: <20160301163602.5fe7d1b8.jep200404@columbus.rr.com>
References: <20160301163602.5fe7d1b8.jep200404@columbus.rr.com>
Message-ID: <CAJzarMP7pj3Zvho4QMV1vK=_JRTjFUNVpCdBaFJmXBiqUbttcA@mail.gmail.com>

RSVP Here:
http://www.meetup.com/Central-Ohio-Python-Users-Group/events/229266103/



On Tue, Mar 1, 2016 at 4:36 PM, <jep200404 at columbus.rr.com> wrote:

> Sorry for the late notice
>
> Wednesday Python Lunch at Tadka
>
> March 2, 2016, 11:30 a.m.
>
> Tadka Indian Cuisine
> 3535 West Dublin Granville Road
> Columbus, OH 43235
> (south corner of SR-161 and Allister Way/Sawmill Place Blvd,
> two traffic lights east of Sawmill)
>
> We'll be meeting for good food and good company. Join us to talk Python,
> programming, or anything else!
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
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From jep200404 at columbus.rr.com  Tue Mar  8 15:01:44 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Tue, 8 Mar 2016 15:01:44 -0500
Subject: [CentralOH] 2016-03-09 11:30 Raspberry Pi 3 at Lunch at Aladdin's
Message-ID: <20160308150144.784fb99f.jep200404@columbus.rr.com>

There will be a Raspberry Pi 3 at lunch.
Thanks to Luke R. at Microcenter for pointing it out.

Wednesday Python Lunch at Aladdin's                                           
                                                                                
March 9, 2016, 11:30 a.m.                                                    
                                                                                
Aladdin's Eatery                                                             
1423(B) Grandview Ave                                                        
Columbus, OH 43212                                                           
                                                                                
We'll be meeting for good food and good company.
Join us to talk Python, programming, or anything else!

From eric at intellovations.com  Tue Mar  8 21:10:54 2016
From: eric at intellovations.com (Eric Floehr)
Date: Tue, 8 Mar 2016 21:10:54 -0500
Subject: [CentralOH] 2016-03-09 11:30 Raspberry Pi 3 at Lunch at
 Aladdin's
In-Reply-To: <20160308150144.784fb99f.jep200404@columbus.rr.com>
References: <20160308150144.784fb99f.jep200404@columbus.rr.com>
Message-ID: <CAJzarMPqNM17UabC34D58eGm9RR_DCJPUfer8XhR80cW0BsAUw@mail.gmail.com>

RSVP here:
http://www.meetup.com/Central-Ohio-Python-Users-Group/events/229451172/



On Tue, Mar 8, 2016 at 3:01 PM, <jep200404 at columbus.rr.com> wrote:

> There will be a Raspberry Pi 3 at lunch.
> Thanks to Luke R. at Microcenter for pointing it out.
>
> Wednesday Python Lunch at Aladdin's
>
> March 9, 2016, 11:30 a.m.
>
> Aladdin's Eatery
> 1423(B) Grandview Ave
> Columbus, OH 43212
>
> We'll be meeting for good food and good company.
> Join us to talk Python, programming, or anything else!
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
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From jep200404 at columbus.rr.com  Fri Mar 11 11:08:03 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Fri, 11 Mar 2016 11:08:03 -0500
Subject: [CentralOH] Pi Day Lunch at Yats
Message-ID: <20160311110803.419a4dd9.jep200404@columbus.rr.com>

Pi Day Lunch at Yats

March 14, 2016, 11:30 a.m.

Yats
1386 Grandview Ave
Columbus, OH 43212

This year's Pi Day lunch will be held at a place where
Pi Day is understood by the folks running the place. 
We'll be meeting for good food and good company.
Join us to talk Pi, Python, programming, or anything else!

From eric at intellovations.com  Fri Mar 11 11:11:42 2016
From: eric at intellovations.com (Eric Floehr)
Date: Fri, 11 Mar 2016 11:11:42 -0500
Subject: [CentralOH] Pi Day Lunch at Yats
In-Reply-To: <20160311110803.419a4dd9.jep200404@columbus.rr.com>
References: <20160311110803.419a4dd9.jep200404@columbus.rr.com>
Message-ID: <CAJzarMMEp7KhP6=JSrk9WPXk4ZHw7xM7RBFbWWoabOY1QV9AUA@mail.gmail.com>

RSVP Here:
http://www.meetup.com/Central-Ohio-Python-Users-Group/events/229513700/



On Fri, Mar 11, 2016 at 11:08 AM, <jep200404 at columbus.rr.com> wrote:

> Pi Day Lunch at Yats
>
> March 14, 2016, 11:30 a.m.
>
> Yats
> 1386 Grandview Ave
> Columbus, OH 43212
>
> This year's Pi Day lunch will be held at a place where
> Pi Day is understood by the folks running the place.
> We'll be meeting for good food and good company.
> Join us to talk Pi, Python, programming, or anything else!
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
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From jep200404 at columbus.rr.com  Sun Mar 13 23:22:16 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Sun, 13 Mar 2016 23:22:16 -0400
Subject: [CentralOH] =?utf-8?q?2016-03-11_=E9=81=93=E5=A0=B4_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz8gUGkgRGF5IEFwcGxlIEZCSSBkZCBqYXZhIHNxbCBz?=
 =?utf-8?q?erver_raspex_caesar_uefi_T4300_larpers_opencpn_canada_3200x1800?=
Message-ID: <20160313232216.0b08cc5b.jep200404@columbus.rr.com>

Monday: Pi Day Python Lunch
http://www.meetup.com/Central-Ohio-Python-Users-Group/events/229513700/

Snowden: FBI Claim That Only Apple Can Unlock Phone Is ...
https://theintercept.com/2016/03/08/snowden-fbi-claim-that-only-apple-can-unlock-phone-is-bullshit/

12 Linux dd, ddrescue and dcfldd command examples
http://www.linuxnix.com/what-you-should-know-about-linux-dd-command/

The following reminds me of how fortunate Pythonistas are.
Java evangelist leaves Oracle to save Java
http://www.theregister.co.uk/2016/03/09/java_evangelist_leaves_oracle_to_save_java/

Microsoft announces SQL Server for Linux
http://www.infoworld.com/article/3041997/linux/microsoft-announces-sql-server-for-linux.html

RaspEX Linux Is Ready for Raspberry Pi 3, Based on Debian 8.3 and Ubuntu 15.10
http://news.softpedia.com/news/raspex-live-cd-is-ready-for-raspberry-pi-3-based-on-debian-8-3-and-ubuntu-15-10-501557.shtml

Julius Caesar
http://programeveryday.com/post/implementing-a-basic-caesar-cipher-in-python/
http://www.zyra.tv/lbreath.htm
https://www.fanfiction.net/s/3375281/1/The-Tragedy-Of-Julius-Caesar-by-Monty-Shakespeare

wp: prefix means Wikipedia
To get good answers, consider following the advice in the links below.
http://catb.org/~esr/faqs/smart-questions.html
http://web.archive.org/web/20090627155454/www.greenend.org.uk/rjk/2000/06/14/quoting.html

wp:Pleonasm
wp:People's Democracy

EFI and Linux: the future is here, and it's awful
http://www.youtube.com/watch?v=V2aq5M3Q76U

dual-booting and UEFI

Pentium T4300 does not have hardware support for virtualization
http://ark.intel.com/products/37253

Slings and arrows of outrageous fortune
http://arstechnica.com/tech-policy/2016/03/patent-battle-over-larpers-foam-arrows-heats-up/

RaspEX for Raspberry Pi 3 and Pi 2
http://raspex.exton.se/

wp:OpenCPN

Performance Bicycle on Sawmill

Who owns most of the land of Canada?

There was a small light Dell laptop running Ubuntu
with a 3200x1800 pixel display. Wow!

From jep200404 at columbus.rr.com  Mon Mar 14 19:35:22 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Mon, 14 Mar 2016 19:35:22 -0400
Subject: [CentralOH] 2016-03-14 Napkin Scribbles from Yats: Go RPi3 Gumbo
 Bikes Education
Message-ID: <20160314193522.270031ac.jep200404@columbus.rr.com>

Go Champion Wins 1st Victory Over Computer
http://english.chosun.com/site/data/html_dir/2016/03/14/2016031401038.html
wp:Go (programming language)

wp: prefix means Wikipedia
To get good answers, consider following the advice in the links below.
http://catb.org/~esr/faqs/smart-questions.html
http://web.archive.org/web/20090627155454/www.greenend.org.uk/rjk/2000/06/14/quoting.html

Two of the diners were about to be declared whatever the euphemism of the day
was for stupid when they were wee students.
One of them would be ten pages ahead
when asked to read aloud back where the everyone else was.

    http://www.ted.com/talks/ken_robinson_says_schools_kill_creativity

First four of us got gumbo and peanut butter pie.
Gumbo was too salty.
Peanut butter pie was very rich.

One third of us rode a bike to lunch.

Another Raspberry Pi 3 was at lunch.

From jep200404 at columbus.rr.com  Thu Mar 17 10:49:01 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Thu, 17 Mar 2016 10:49:01 -0400
Subject: [CentralOH] 2016-03-09 Napkin Scribbles from Aladdin's: Raspberry
 Pi 3 B; BCM43438, chip antenna, novel, rosin flux
Message-ID: <20160317104901.2ca44844.jep200404@columbus.rr.com>

A Raspberry Pi 3 was at lunch.
Python is the main language promoted on Raspberry Pis.

U19 looks like bare die
has tiny markings that were too small for my eyes to see
Viewed at the right angle With the right light at the right angle,
sharp lettering is revealed.

    BROADCOM <R>
    BCM43438KUBG
    HE1601 P11
    SG0253-24 3E
    27-74

It is the the RF chip that does Wifi and Bluetooth.
Maybe it has FM receiver support, but that is not used.
Looking at the top side of the board with the display connector to the left,
the antenna is above the display connector.
I am impressed with how well the tiny antenna works.

Maybe the RF chip uses SDIO (secure digital input output).

U8 on top side near HDMI connector seems to be bare die.

Noticed residue on bottom by through hole-parts.
Is the residue from rosin flux?

Make a visual novel with Python
http://www.linuxuser.co.uk/tutorials/make-a-visual-novel-with-python

From jep200404 at columbus.rr.com  Thu Mar 17 18:05:55 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Thu, 17 Mar 2016 18:05:55 -0400
Subject: [CentralOH] 2016-03-23 Wednesday Lunch at Nazareth Restaurant & Deli
Message-ID: <20160317180555.72115548.jep200404@columbus.rr.com>

Python Lunch at Nazareth Restaurant & Deli                                    
                                                                                
March 23, 2016, 11:30 a.m.                                                   
                                                                                
Nazareth Restaurant & Deli                                                   
5239 North Hamilton Road                                                     
Columbus, OH 43230                                                           
(between Morse Road and old SR-161)                                          
                                                                                
We'll be meeting for good food and good company.
Join us to talk Python, programming, or anything else!

From eric at intellovations.com  Thu Mar 17 22:22:13 2016
From: eric at intellovations.com (Eric Floehr)
Date: Thu, 17 Mar 2016 22:22:13 -0400
Subject: [CentralOH] 2016-03-23 Wednesday Lunch at Nazareth Restaurant &
 Deli
In-Reply-To: <20160317180555.72115548.jep200404@columbus.rr.com>
References: <20160317180555.72115548.jep200404@columbus.rr.com>
Message-ID: <CAJzarMP8HfOgcLGbCSYi88RjBb9ewhAwnuwBzbqF61+npb8YBw@mail.gmail.com>

RSVP Here:
http://www.meetup.com/Central-Ohio-Python-Users-Group/events/229682600/



On Thu, Mar 17, 2016 at 6:05 PM, <jep200404 at columbus.rr.com> wrote:

> Python Lunch at Nazareth Restaurant & Deli
>
> March 23, 2016, 11:30 a.m.
>
> Nazareth Restaurant & Deli
> 5239 North Hamilton Road
> Columbus, OH 43230
> (between Morse Road and old SR-161)
>
> We'll be meeting for good food and good company.
> Join us to talk Python, programming, or anything else!
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
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From eric at intellovations.com  Sat Mar 19 16:23:56 2016
From: eric at intellovations.com (Eric Floehr)
Date: Sat, 19 Mar 2016 16:23:56 -0400
Subject: [CentralOH] COhPy Leap Day Challenge
Message-ID: <CAJzarMP+PdA-e+knxTMbSgBafj_MSOECaVVhf_vgVSTU2By7Lw@mail.gmail.com>

All,

Our last Central Ohio Python Users Group meeting occurred on Monday,
February 29, Leap Day. It's the first time COhPy met on such a special day.

At the meeting a challenge was posed:

*Write a Python program to determine when COhPy will next meet on Leap Day?*

So far we've had six entrants, and every solution is different. Thanks much
to Shareef, Bennett, Sean, Bim, Joe, and Jan so far for answering!

There is still time to submit your solution, there are no wrong answers!
Reply back to me directly (not the list) with your code. It's a fun way to
code some Python.

Also, if you don't want to answer, perhaps you have an idea for another
challenge. If so, I'd love to hear that too!

Cheers,
Eric
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From jep200404 at columbus.rr.com  Sat Mar 19 16:27:27 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Sat, 19 Mar 2016 16:27:27 -0400
Subject: [CentralOH] =?utf-8?q?2016-03-18_=E9=81=93=E5=A0=B4_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz8gZXVsZXIgIzEsIHNldCB1bmlvbiwgdHJpYW5ndWxh?=
 =?utf-8?q?r_numbers=2C_xrange_v_range=2C_grails=2C_piping=2C_make_me_a_sa?=
 =?utf-8?q?ndwich=2C_little_bobby_tables=2C_z80_1802=2C_introspection_virt?=
 =?utf-8?q?ualenv_pip_anaconda_miniconda_conda_orm_sqlalchemy_djangoorm_go?=
 =?utf-8?q?od_videos_zen_zmm?=
Message-ID: <20160319162727.2d8d9c69.jep200404@columbus.rr.com>

Someone started on Project Euler, starting with problem #1,
so that was played with much, reinventing the wheel:

    http://nbviewer.jupyter.org/url/colug.net/python/dojo/20160318/euler-001-multiples-of-3-and-5-20160318.ipynb
    http://colug.net/python/dojo/20160318/euler-001-multiples-of-3-and-5-20160318.ipynb

wp:Project Euler
Eventually, the old stuff was discovered:

    http://nbviewer.ipython.org/url/colug.net/python/all-ipython-notebooks/euler-001-multiples-of-3-and-5-20150220.ipynb
    http://colug.net/python/all-ipython-notebooks/euler-001-multiples-of-3-and-5-20150220.ipynb

    wp:Triangular number

wp: prefix means Wikipedia
To get good answers, consider following the advice in the links below.
http://catb.org/~esr/faqs/smart-questions.html
http://web.archive.org/web/20090627155454/www.greenend.org.uk/rjk/2000/06/14/quoting.html

range() versus xrange()

    http://nbviewer.ipython.org/url/colug.net/python/dojo/20160318/dojo-20160318-range-versus-xrange-on-try.jupyter.org.ipynb
    http://colug.net/python/dojo/20160318/dojo-20160318-range-versus-xrange-on-try.jupyter.org.ipynb

wp:dirndl
wp:Eli_Whitney#Interchangeable_parts
wp:Interchangeable_parts#Brunel.27s_sailing_blocks

wp:Scrum (software development)

wp:ISO metric screw thread

US government pushed tech firms to hand over source code
http://www.zdnet.com/article/us-government-pushed-tech-firms-to-hand-over-source-code/

How Microsoft copied malware techniques to make Get Windows 10 the world's PC pest
http://www.theregister.co.uk/2016/03/17/microsoft_windows_10_upgrade_gwx_vs_humanity/

https://docs.python.org/2/library/doctest.html
groovy is dying? lost its sponsor?
    https://blog.pivotal.io/pivotal/news/groovy-2-4-and-grails-3-0-to-be-last-major-releases-under-pivotal-sponsorship

piping in Python sucks
try sh
https://pypi.python.org/pypi/sh
Catherine's cmd/cmd2?
https://pythonhosted.org/cmd2/

https://xkcd.com/149/
reply to kids with HTTP status codes
wp:List of HTTP status codes

https://xkcd.com/327/
wp:CORDIC

wp:Zilog Z80
ugh!:
wp:RCA 1802

reflection is introspection in Python?

replace pyvideo.org

Dell bought EMC which owns VMware?
VMware got rid of many employees?

virtualenv is pretty much mandatory
It allows different python projects to use different versions of the same
python package, without conflicts.

pip is the preferred program for installing Python packages.

Anaconda and miniconda have conda which is also good.

Great intro to IPython Notebook (which has been renamed to Jupyter)
http://pyvideo.org/video/1605/science-and-python-retrospective-of-a-mostly-s

Two big ORMs for Python: SQLAlchemy and DjangoORM

some good videos

http://pyvideo.org/video/1032/what-makes-python-so-awesome
http://pyvideo.org/video/1780/transforming-code-into-beautiful-idiomatic-pytho
http://pyvideo.org/video/542/pyohio-2011-names-objects-and-plummeting-from
http://pyvideo.org/video/524/pyohio-2011-squinting-at-python-objects
http://pyvideo.org/video/2840/the-clean-architecture-in-python
http://pyvideo.org/video/1599/a-python-sthetic-beauty-and-why-i-python
http://pyvideo.org/video/1369/python-design-patterns-1

PEP 0008 -- Style Guide for Python Code
https://www.python.org/dev/peps/pep-0008/
PEP 20 -- The Zen of Python
https://www.python.org/dev/peps/pep-0020/
import this
wp:Zen and the Art of Motorcycle Maintenance

From eric at intellovations.com  Sat Mar 19 16:37:05 2016
From: eric at intellovations.com (Eric Floehr)
Date: Sat, 19 Mar 2016 16:37:05 -0400
Subject: [CentralOH] 
	=?utf-8?q?2016-03-18_=E9=81=93=E5=A0=B4_Scribbles_?=
	=?utf-8?b?76SY5pu4L+aDoeaWhz8gZXVsZXIgIzEsIHNldCB1bmlvbiwgdHJpYW5n?=
	=?utf-8?q?ular_numbers=2C_xrange_v_range=2C_grails=2C_piping=2C_ma?=
	=?utf-8?q?ke_me_a_sandwich=2C_little_bobby_tables=2C_z80_1802=2C_i?=
	=?utf-8?q?ntrospection_virtualenv_pip_anaconda_miniconda_conda_orm?=
	=?utf-8?q?_sqlalchemy_djangoorm_good_videos_zen_zmm?=
In-Reply-To: <20160319162727.2d8d9c69.jep200404@columbus.rr.com>
References: <20160319162727.2d8d9c69.jep200404@columbus.rr.com>
Message-ID: <CAJzarMPLpt+4C-xOm_sUDZNUrE8zx2WjoJ4mT9=6BOh7Rru=+w@mail.gmail.com>

I noticed that [14], [16], and [24] don't return the correct answer
(233168) which might be a reason they are unexpectedly faster. Or am I
interpreting something incorrectly?


On Sat, Mar 19, 2016 at 4:27 PM, <jep200404 at columbus.rr.com> wrote:

> Someone started on Project Euler, starting with problem #1,
> so that was played with much, reinventing the wheel:
>
>
> http://nbviewer.jupyter.org/url/colug.net/python/dojo/20160318/euler-001-multiples-of-3-and-5-20160318.ipynb
>
> http://colug.net/python/dojo/20160318/euler-001-multiples-of-3-and-5-20160318.ipynb
>
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From jep200404 at columbus.rr.com  Sat Mar 19 18:38:58 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Sat, 19 Mar 2016 18:38:58 -0400
Subject: [CentralOH] Bugs in euler-001-multiples-of-3-and-5-20160318
In-Reply-To: <CAJzarMPLpt+4C-xOm_sUDZNUrE8zx2WjoJ4mT9=6BOh7Rru=+w@mail.gmail.com>
References: <20160319162727.2d8d9c69.jep200404@columbus.rr.com>
 <CAJzarMPLpt+4C-xOm_sUDZNUrE8zx2WjoJ4mT9=6BOh7Rru=+w@mail.gmail.com>
Message-ID: <20160319183858.49cbb3d0.jep200404@columbus.rr.com>

On Sat, 19 Mar 2016 16:37:05 -0400, Eric Floehr <eric at intellovations.com> wrote:

> On Sat, Mar 19, 2016 at 4:27 PM, <jep200404 at columbus.rr.com> wrote:
> 
> > Someone started on Project Euler, starting with problem #1,
> > so that was played with much, reinventing the wheel:
> >
> > http://nbviewer.jupyter.org/url/colug.net/python/dojo/20160318/euler-001-multiples-of-3-and-5-20160318.ipynb
> > http://colug.net/python/dojo/20160318/euler-001-multiples-of-3-and-5-20160318.ipynb

> I noticed that [14], [16], and [24] don't return the correct answer
> (233168) which might be a reason they are unexpectedly faster. 

Thanks for catching that.

Cells 13 through 16 are irredeemably broken.
Cells 23 and 24 have been fixed in cells 25 and 26 below

    http://nbviewer.jupyter.org/url/colug.net/python/dojo/20160318/euler-001-multiples-of-3-and-5-20160319.ipynb
    http://colug.net/python/dojo/20160318/euler-001-multiples-of-3-and-5-20160319.ipynb

From jeffschluep at mac.com  Sat Mar 19 17:08:55 2016
From: jeffschluep at mac.com (Jeff Schluep)
Date: Sat, 19 Mar 2016 17:08:55 -0400
Subject: [CentralOH] 
 =?utf-8?q?2016-03-18_=E9=81=93=E5=A0=B4_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz8gZXVsZXIgIzEsIHNldCB1bmlvbiwgdHJpYW5ndWxh?=
 =?utf-8?q?r_numbers=2C_xrange_v_range=2C_grails=2C_piping=2C_make_me_a_sa?=
 =?utf-8?q?ndwich=2C_little_bobby_tables=2C_z80_1802=2C_introspection_virt?=
 =?utf-8?q?ualenv_pip_anaconda_miniconda_conda_orm_sqlalchemy_djangoorm_go?=
 =?utf-8?q?od_videos_zen_zmm?=
In-Reply-To: <20160319162727.2d8d9c69.jep200404@columbus.rr.com>
References: <20160319162727.2d8d9c69.jep200404@columbus.rr.com>
Message-ID: <BF07386C-3EE8-4B1E-9198-D483447CA3C3@mac.com>

vmware reference:

http://arstechnica.com/information-technology/2016/01/vmware-fusion-workstation-team-culled-in-company-restructure/ <http://arstechnica.com/information-technology/2016/01/vmware-fusion-workstation-team-culled-in-company-restructure/>


> On Mar 19, 2016, at 4:27 PM, jep200404 at columbus.rr.com wrote:
> 
> Someone started on Project Euler, starting with problem #1,
> so that was played with much, reinventing the wheel:
> 
>    http://nbviewer.jupyter.org/url/colug.net/python/dojo/20160318/euler-001-multiples-of-3-and-5-20160318.ipynb
>    http://colug.net/python/dojo/20160318/euler-001-multiples-of-3-and-5-20160318.ipynb
> 
> wp:Project Euler
> Eventually, the old stuff was discovered:
> 
>    http://nbviewer.ipython.org/url/colug.net/python/all-ipython-notebooks/euler-001-multiples-of-3-and-5-20150220.ipynb
>    http://colug.net/python/all-ipython-notebooks/euler-001-multiples-of-3-and-5-20150220.ipynb
> 
>    wp:Triangular number
> 
> wp: prefix means Wikipedia
> To get good answers, consider following the advice in the links below.
> http://catb.org/~esr/faqs/smart-questions.html
> http://web.archive.org/web/20090627155454/www.greenend.org.uk/rjk/2000/06/14/quoting.html
> 
> range() versus xrange()
> 
>    http://nbviewer.ipython.org/url/colug.net/python/dojo/20160318/dojo-20160318-range-versus-xrange-on-try.jupyter.org.ipynb
>    http://colug.net/python/dojo/20160318/dojo-20160318-range-versus-xrange-on-try.jupyter.org.ipynb
> 
> wp:dirndl
> wp:Eli_Whitney#Interchangeable_parts
> wp:Interchangeable_parts#Brunel.27s_sailing_blocks
> 
> wp:Scrum (software development)
> 
> wp:ISO metric screw thread
> 
> US government pushed tech firms to hand over source code
> http://www.zdnet.com/article/us-government-pushed-tech-firms-to-hand-over-source-code/
> 
> How Microsoft copied malware techniques to make Get Windows 10 the world's PC pest
> http://www.theregister.co.uk/2016/03/17/microsoft_windows_10_upgrade_gwx_vs_humanity/
> 
> https://docs.python.org/2/library/doctest.html
> groovy is dying? lost its sponsor?
>    https://blog.pivotal.io/pivotal/news/groovy-2-4-and-grails-3-0-to-be-last-major-releases-under-pivotal-sponsorship
> 
> piping in Python sucks
> try sh
> https://pypi.python.org/pypi/sh
> Catherine's cmd/cmd2?
> https://pythonhosted.org/cmd2/
> 
> https://xkcd.com/149/
> reply to kids with HTTP status codes
> wp:List of HTTP status codes
> 
> https://xkcd.com/327/
> wp:CORDIC
> 
> wp:Zilog Z80
> ugh!:
> wp:RCA 1802
> 
> reflection is introspection in Python?
> 
> replace pyvideo.org
> 
> Dell bought EMC which owns VMware?
> VMware got rid of many employees?
> 
> virtualenv is pretty much mandatory
> It allows different python projects to use different versions of the same
> python package, without conflicts.
> 
> pip is the preferred program for installing Python packages.
> 
> Anaconda and miniconda have conda which is also good.
> 
> Great intro to IPython Notebook (which has been renamed to Jupyter)
> http://pyvideo.org/video/1605/science-and-python-retrospective-of-a-mostly-s
> 
> Two big ORMs for Python: SQLAlchemy and DjangoORM
> 
> some good videos
> 
> http://pyvideo.org/video/1032/what-makes-python-so-awesome
> http://pyvideo.org/video/1780/transforming-code-into-beautiful-idiomatic-pytho
> http://pyvideo.org/video/542/pyohio-2011-names-objects-and-plummeting-from
> http://pyvideo.org/video/524/pyohio-2011-squinting-at-python-objects
> http://pyvideo.org/video/2840/the-clean-architecture-in-python
> http://pyvideo.org/video/1599/a-python-sthetic-beauty-and-why-i-python
> http://pyvideo.org/video/1369/python-design-patterns-1
> 
> PEP 0008 -- Style Guide for Python Code
> https://www.python.org/dev/peps/pep-0008/
> PEP 20 -- The Zen of Python
> https://www.python.org/dev/peps/pep-0020/
> import this
> wp:Zen and the Art of Motorcycle Maintenance
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh

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From jep200404 at columbus.rr.com  Sun Mar 20 11:57:23 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Sun, 20 Mar 2016 11:57:23 -0400
Subject: [CentralOH] =?utf-8?q?2016-02-29_=E9=81=93=E5=A0=B4_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz8gb3V0bGllcnMsIHN3b3QgYmFkZ2VyLCB0ZW5uaXMg?=
 =?utf-8?q?for_two=2C_try=2Ejupyter=2Eorg=2C_edX_easy=5Finstall_v_pip_virt?=
 =?utf-8?q?ualenv_*conda_koans_Euler_K=C3=B6nigsberg_Dami=5Bea=5Dn_oscillo?=
 =?utf-8?q?scope_drones?=
Message-ID: <20160320115723.314891c3.jep200404@columbus.rr.com>

wp:Outliers (book)

An epic worthy of Milton. Nowhere else have I seen the whole story put down
with such elegance and gusto and in such revealing detail and simple language
which carries the reader through wonderful and profound scientific discoveries
and their application.

    wp:The Making of the Atomic Bomb

wp: prefix means Wikipedia
To get good answers, consider following the advice in the links below.
http://catb.org/~esr/faqs/smart-questions.html
http://web.archive.org/web/20090627155454/www.greenend.org.uk/rjk/2000/06/14/quoting.html

wp:SWOT analysis

http://wyolum.com/projects/BADGEr/
http://www.seeedstudio.com/
http://2013.oshwa.org/

wp:Tennis for Two

try.jupyter.org (instead of tmpnb.org)
edx (from MIT)
    wp:edX

easy_install is deprecated
use pip instead of easy_install

virtualenv is pretty much mandatory (unless one is using conda)

miniconda
anaconda
conda

https://github.com/gregmalcolm/python_koans

https://projecteuler.net/
wp:Seven Bridges of K?nigsberg
wp:Kaliningrad
wp:Enclave and exclave

wp:Damian Conway
wp:Father Damien
Damien tends to be from Romance Languages from Greek ????????
Damien tends to be from English from Greek ????????
wp:Oscilloscope

drones
FAA
air traffic control

From eric at intellovations.com  Wed Mar 23 12:23:49 2016
From: eric at intellovations.com (Eric Floehr)
Date: Wed, 23 Mar 2016 12:23:49 -0400
Subject: [CentralOH] March meeting this Monday
Message-ID: <CAJzarMNneJcm_1gVd0KqGoKt6eMLdSMCaExtTDijUGUncF8_jA@mail.gmail.com>

All, just a reminder that our monthly meeting will be this coming Monday,
March 28, at Pillar in the Smith Brothers Building (where we have been
meeting for a while).

This month Ethan Dicks and Jim Prior will be talking about interacting with
the real world using a Raspberry Pi and Python.

Additionally, I'll be continuing my Beginning Python series, and we'll
review the 10 (so far) entries to the Python challenge presented last
month, which was to figure out when the next Leap Day COhPy meeting will be
(there is still time to enter).

RSVP here:
http://www.meetup.com/Central-Ohio-Python-Users-Group/events/228901455/

Hope to see you there!
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From eric at intellovations.com  Sat Mar 26 10:31:14 2016
From: eric at intellovations.com (Eric Floehr)
Date: Sat, 26 Mar 2016 10:31:14 -0400
Subject: [CentralOH] wradlib - wx radar library
In-Reply-To: <CAMBaWcV2Gz8xfP81Goue6Z5YXH0EM8NYZW1WUziymfv2epzb0g@mail.gmail.com>
References: <CAMBaWcV2Gz8xfP81Goue6Z5YXH0EM8NYZW1WUziymfv2epzb0g@mail.gmail.com>
Message-ID: <CAJzarMPaC=A7SR6HxiR-R4XHDH_XWVVKUUmo8L0uQtHn=whDjA@mail.gmail.com>

Austin,

This is really cool, just now getting to it! :-) Thanks for sharing!

It looks like the original link is now dead, but this link works:

http://wradlib.org/wradlib-docs/latest/tutorial_get_rainfall.html

Cheers,
Eric


On Mon, Dec 7, 2015 at 6:03 PM, Austin Godber <godber at gmail.com> wrote:

> I just came across this nifty library for working with weather radar data
> that can do cool things like this, Converting reflectivity to rainfall:
>
> http://wradlib.bitbucket.org/tutorial_get_rainfall.html
>
> I thought you all might find it interesting.
>
> Austin
>
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
>
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From jep200404 at columbus.rr.com  Mon Mar 28 12:08:27 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Mon, 28 Mar 2016 12:08:27 -0400
Subject: [CentralOH] 2016-03-30 11:30 Python Lunch at Yin-Yue Restaurant
Message-ID: <20160328120827.616003d3.jep200404@columbus.rr.com>

Python Lunch at Yin-Yue Restaurant

March 30, 2016, 11:30 a.m.

Yin-Yue Restaurant[1]
1236 East Hudson St[2]
Columbus, OH 43211

We'll be meeting for good food and good company.
Join us to talk Python, programming, or anything else!
The Big Bass Brothers[3] recently gave the Yin-Yue four bellies[4]. 

[1] http://yinyue-rest.com/
[2] http://www.mapquest.com/us/ohio/chinese-restaurants-columbus/yin-yue-restaurant-5595845
[3] http://bigbassbrothers.com/
[4] http://610wtvn.iheart.com/onair/big-bass-brothers-4244/march-18-review-yin-yue-14509134/

From eric at intellovations.com  Mon Mar 28 14:51:50 2016
From: eric at intellovations.com (Eric Floehr)
Date: Mon, 28 Mar 2016 14:51:50 -0400
Subject: [CentralOH] 2016-03-30 11:30 Python Lunch at Yin-Yue Restaurant
In-Reply-To: <20160328120827.616003d3.jep200404@columbus.rr.com>
References: <20160328120827.616003d3.jep200404@columbus.rr.com>
Message-ID: <CAJzarMN9D6yp1jsuzoCkLehg2k8LJMy6b-38ZZgJyo36nGBRVw@mail.gmail.com>

RSVP here:
http://www.meetup.com/Central-Ohio-Python-Users-Group/events/229940793/



On Mon, Mar 28, 2016 at 12:08 PM, <jep200404 at columbus.rr.com> wrote:

> Python Lunch at Yin-Yue Restaurant
>
> March 30, 2016, 11:30 a.m.
>
> Yin-Yue Restaurant[1]
> 1236 East Hudson St[2]
> Columbus, OH 43211
>
> We'll be meeting for good food and good company.
> Join us to talk Python, programming, or anything else!
> The Big Bass Brothers[3] recently gave the Yin-Yue four bellies[4].
>
> [1] http://yinyue-rest.com/
> [2]
> http://www.mapquest.com/us/ohio/chinese-restaurants-columbus/yin-yue-restaurant-5595845
> [3] http://bigbassbrothers.com/
> [4]
> http://610wtvn.iheart.com/onair/big-bass-brothers-4244/march-18-review-yin-yue-14509134/
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
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From jep200404 at columbus.rr.com  Tue Mar 29 17:41:33 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Tue, 29 Mar 2016 17:41:33 -0400
Subject: [CentralOH] =?utf-8?q?2016-03-28_=E6=9C=83=E8=AD=B0_Scribbles_?=
 =?utf-8?b?76SY5pu4L+aDoeaWhz86IHhyYW5kciwgbGVhcCBkYXkgY2hhbGxlbmdlOyBu?=
 =?utf-8?q?ew_challenge=3B_raspberry_pi_0_sense_hat=3B_C_versus_Python=3B_?=
 =?utf-8?q?Unix_Philosophy_camera=2C_macro_seek_thermal?=
Message-ID: <20160329174133.74897c47.jep200404@columbus.rr.com>

Thanks again to Pillar Technology and Chris for hosting us.
Thanks to Chris for acquiring a VGA to HDMI adapter. We will need it.
Thanks to Don and Mike for helping with the early video setup.

Pillar has completely redone how one connects to the displays.
The old way was terribly confusing.
The new way is much easier. It is mostly better.

New way:

Three HDMI input jacks. One each near a display.
HDMI input jack on concrete column seems dead
    (or do I just not know how to select it?)
Control panel in middle of north wall has:
    source buttons on left
    destination buttons on right
        (audio is a destination, speakers are somewhere far right)

    FIRST: push a source button
    SECOND: push a destination button

    HDMI audio worked.

I suspect that the display resolution reported is not of any actual
display, but of the control system between one's computer and the
actual displays. Resolution mismatches resolution reported to computers
and actual displays caused edges of video to not be displayed ala
overscanning.

pi at raspberrypi:~ $ cat xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1280 x 720, current 1280 x 720, maximum 1280 x 720
default connected 1280x720+0+0 0mm x 0mm
   1280x720       0.00*
pi at raspberrypi:~ $ cat xrandr-verbose
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1280 x 720, current 1280 x 720, maximum 1280 x 720
default connected 1280x720+0+0 (0x1d1) normal (normal) 0mm x 0mm
        Identifier: 0x1d0
        Timestamp:  6466
        Subpixel:   unknown
        Clones:
        CRTC:       0
        CRTCs:      0
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter:
  1280x720 (0x1d1)  0.000MHz *current
        h: width  1280 start    0 end    0 total 1280 skew    0 clock   0.00KHz
        v: height  720 start    0 end    0 total  720           clock   0.00Hz
pi at raspberrypi:~ $

###############################################################################

Eric Floehr presented the entries for last month's challenge to write
Python code to figure out when the next COhPy meeting will be on a leap day.

    https://github.com/efloehr/cohpy_leapday_challenge

    There are many little good details to learn from the entries.
        calendar.MONDAY is much much better than magic number 0!!!
    There was also some spectacularly ugly code that works.

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

Eric's challenge for the next month:

    1. find the date of every past COhPy meeting that met in a given month

        --  COhPy started September 2009
        --  COhPy meets the last Monday of the month, except:
            -- No COhPy's in November
            -- December COhPy is first Monday
            -- next to last Monday in May (to avoid Memorial Day)
        --  For example, passing in March, it would return the dates of COhPy
            for 2010-2015.
        --  For example, passing in July, it would return the dates of COhPy
            for 2010-2014.

    2. Collect and present high temperatures for those dates.

    3. BONUS: Predict the high temperature for the next COhPy in
       that month. For exaple, passing in May would predict the
       high for May 2016 COhPy meeting.

    meetings are last monday, except
        no meeting in November
        first Monday in December
        next to last monday in May

    submit code by next meeting

    weatherunderground.com/weather/api/
    weatherunderground.com/weather/api/d/docs
    weatherunderground.com/weather/api/d/docs?d=data/almanac
    weatherunderground.com/weather/api/d/docs?d=data/history

###############################################################################

Ethan Dicks presented about Raspberry Pi Sense Hat,
which has example Python programs where small programs do much.

    https://www.raspberrypi.org/products/sense-hat/
    http://pythonhosted.org/sense-hat/
    https://github.com/RPi-Distro/python-sense-hat
    https://www.raspberrypi.org/documentation/hardware/sense-hat/README.md
    https://www.raspberrypi.org/documentation/hardware/sense-hat/images/Sense-HAT-V1_0.pdf

    All of the I/O devices use I?C.
    Most of them use the main I?C bus.
    Only the EEPROM uses the other I?C bus,
    which is only for board identification and configuration.
    The microcontroller for the LEDs, also uses SPI interface.
    Is that SPI used during normal use, or just for in-circuit programming?
        Does it have to be programmed after each cold boot?

###############################################################################

Jim Prior presented about C versus Python for a practical real-world use of a
Raspberry Pi. Got a Sense Hat for its Python examples of using I?C[4] bus. The
MLX90620[1] needed to use I?C in way that required ioctl[2] calls. He was not
having good experience with Python libraries for I?C, so he changed to C. Later
partially converted back to Python and compared the two. Getting data from chip
one program. Number crunching was done by a separate program. Communication
between the two programs was plain text, ala the Unix Philosophy. This eases
development, testing, and debugging.

    This is the Unix philosophy: Write programs that do one thing and do it
    well. Write programs to work together. Write programs to handle text
    streams, because that is a universal interface.[3]

Whole presentation was done from the Raspberry Pi 3, not a laptop.
It drove HDMI for big displays. Its Wifi worked fine with Pillar's Wifi.
Raspberry Pi camera worked well for showing board on big displays for everyone
to see. Held eye loupe over camera for macro shots. Crude, but worked.

Seek thermal camera for smartphone is very cool.
http://www.thermal.com/
http://www.thermal.com/products/compactxr

Because of resolution mismatch between HDMI output and actual displays,
enabled "overscan" in Raspberry Pi Configuration, which actually underscans.
That worked.

Colorized text with ANSI escape sequences to roughly indicate temperature range.
Crude, but looks better than plain text. Well received.

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

python versus c

    structs of binary data
        c: rocks
        python: sucks

    printing
        python rocks
        c is tedious

    array number crunching
        python's numpy rocks
        c is tedious

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

structs of binary data

    python:

        struct library works, but sucks
        cryptic format string:

            '<64B64b64B20B...BhhhHBB2Bh13B2BB8B'

            format string hard to read
            no names
            hard to debug
            easy to make mistakes
            hard to maintain

        will probably write a new struct library
            read C struct to figure out format and element names
                already did first part
            attributes of object? (like I already did)
            dictionary?
            named tuple?
                no, because that would not understand arrays
        https://docs.python.org/3/library/struct.html

    c:

        struct eeprom_struct {
            /* The order of columns and rows is made to match the chip datasheet.
            *  This is contrary to typical C convention. */

            // This structure requires little endian byte order.
            // It is prudent to check this with eeprom_struct_is_ok().
            // Python struct magic: little-endian standard-size no-alignment
            byte delta_ai[N_COLUMNS][N_ROWS]; /* IR pixels individual offset
                                              *  coefficients */
            s_byte bi[N_COLUMNS][N_ROWS]; /* individual Ta dependence (slope)
                                          *  of IR pixels offset */
            byte delta_alpha[N_COLUMNS][N_ROWS]; // individual sensitivity coefficients
            byte reserved_1[0x14];
            ...
            byte bi_scale;
            s_word vth0; // of absolute sensor
            s_word kt1; // of absolute sensor
            s_word kt2; // of absolute sensor
            word alpha_0;
            byte alpha_0_scale_exponent;
            byte delta_alpha_scale_exponent;
            byte emissivity[2];
            s_word ksta;
            byte melexis_reserved_3[13];
            byte configuration_bytes[sizeof(word)]; /* bad alignment!!! */
            byte oscillator_trim;
            byte chip_id[8];
        };

    c:

        struct eeprom_struct eeprom;
        ...
        read_whole_eeprom(I2C_BUS_PATH, (byte *)&eeprom);
        ...
        eeprom.delta_ai[column][row]
        eeprom.ks4

    python:

        struct.unpack(fmt, raw_eeprom)
        returns outrageous terrible monster tuple with unnamed elements:

        (0, 13, 7, 15, 3, 10, 18, 8, 22, 13, 17, 17, 16, 25, 20, 26, 15, 25, 19, 29, 29, 22, 35, 34, 16, 25, 25, 25, 21, 23, 19, 29, 31, 36, 35, 32, 27, 39, 33, 37, 28, 23, 25, 38, 19, 33, 31, 39, 31, 22, 41, 46, 36, 29, 41, 46, 16, 24, 34, 53, 11, 20, 25, 35, -64, -55, -60, -64, -64, -55, -60, -81, -60, -60, -60, -60, -60, -55, -55, -55, -47, -51, -43, -55, -47, -51, -47, -51, -60, -55, -51, -55, -55, -51, -51, -55, -55, -43, -47, -51, -55, -47, -43, -43, -60, -47, -51, -43, -51, -47, -38, -43, -55, -47, -47, -34, -51, -51, -43, -38, -60, -55, -47, -43, -68, -60, -55, -47, 94, 96, 66, 0, 127, 129, 101, 45, 159, 170, 142, 78, 179, 200, 175, 114, 203, 223, 205, 142, 209, 230, 223, 163, 211, 242, 235, 185, 201, 246, 238, 200, 199, 246, 250, 204, 188, 230, 251, 214, 171, 226, 242, 215, 157, 207, 221, 207, 129, 181, 214, 203, 104, 157, 181, 168, 73, 125, 155, 150, 33, 87, 116, 116, 0, 0, 0, 0, 0, 0, 0, 0, [truncated for email]

        # Ugly frail solution:
        def eeprom_from_hex_bytes(fmt, hex_bytes):
            # print('efhb0')
            raw_eeprom = bytes(int(i, 0x10) for i in hex_bytes)
            # print('efhb1 raw_eeprom %r', raw_eeprom)
            # print('struct %r', struct.unpack(fmt, raw_eeprom))
            i = iter(struct.unpack(fmt, raw_eeprom))

            eeprom = Namespace()
            eeprom.delta_ai = np.array(
                [[next(i) for row in range(N_ROWS)]
                for column in range(N_COLUMNS)])
            # print(eeprom.delta_ai)
            eeprom.bi = np.array(
                [[next(i) for row in range(N_ROWS)]
                for column in range(N_COLUMNS)])
            # print(eeprom.bi)
            eeprom.delta_alpha = np.array(
                [[next(i) for row in range(N_ROWS)]
                for column in range(N_COLUMNS)])
            # print(eeprom.delta_alpha)
            eeprom.reserved_1 = [next(i) for _ in range(0x14)]
            ...
            eeprom.bi_scale = next(i)
            eeprom.vth0 = next(i)
            eeprom.kt1 = next(i)
            eeprom.kt2 = next(i)
            eeprom.alpha_0 = next(i)
            eeprom.alpha_0_scale_exponent = next(i)
            eeprom.delta_alpha_scale_exponent = next(i)
            lsb = next(i)
            msb = next(i)
            eeprom.emissivity = (msb << 8) | (lsb << 0)
            eeprom.ksta = next(i)
            eeprom.melexis_reserved_3 = [next(i) for _ in range(13)]
            lsb = next(i)
            msb = next(i)
            eeprom.configuration = (msb << 8) | (lsb << 0)
            eeprom.oscillator_trim = next(i)
            eeprom.chip_id = [next(i) for _ in range(8)]
            # print('eeprom.chip_id %r' % eeprom.chip_id)
            try:
                next(i)
            except StopIteration:
                pass
            else:
                assert False, 'too much data'
            return eeprom

        eeprom = eeprom_from_hex_bytes(eeprom_struct_format, tokens[3:])

################################################################################

    printing

        c not bad, but tedious

            Debug && printf("kt2 %.14g\n", kt2);
            printing arrays requires loops

        python easy:

            %s and %r do what I want most of the time
            They worked better than I expected.

            Debug and print('kt2 %s' % kt2)
            Debug and print('t0 %s' % t0)  # prints whole array nicely

                t0 [[ 21.433938    21.45769127  22.12212847  22.06982896]
                 [ 21.71642774  21.47742728  21.81028965  22.36326052]
                 [ 21.46166744  21.46738832  21.75716622  21.80972404]
                 [ 21.78738954  21.55695391  21.63291729  22.0962512 ]
                 [ 21.5838179   21.67025737  21.60192474  22.00316293]
                 [ 21.43384675  21.33803613  21.26758049  21.73715358]
                 [ 21.45780122  21.54859802  21.28838303  21.18152489]
                 [ 21.14258288  21.29744953  21.41436173  21.23811497]
                 [ 21.33403794  21.39038393  21.05018548  21.38457984]
                 [ 21.21516439  21.23793759  21.34195015  21.48188631]
                 [ 21.01884282  21.29754758  21.54742971  21.28679332]
                 [ 20.9576762   20.89032065  21.34561205  21.09876444]
                 [ 20.3055047   21.13309269  21.38052634  21.36885682]
                 [ 20.57731035  21.07738869  21.35537015  20.8579475 ]
                 [ 20.01025302  20.76977517  21.2911712   20.61779808]
                 [ 20.35203675  20.88424896  21.44563054  21.44234485]]

################################################################################

    array number crunching

        python rocks:

            t0 = (
                vir_compensated / alpha + (ta + Zero_Celsius_in_Kelvin) ** 4
            ) ** 0.25 - Zero_Celsius_in_Kelvin

        c not bad, but tedious:

            tak = ta + Zero_Celsius_in_Kelvin;
            tak_squared = tak * tak;
            tak_to_the_4th = tak_squared * tak_squared;

            for (column=0;column<N_COLUMNS;column++) {
                for (row=0;row<N_ROWS;row++) {
                    t0[column][row] = sqrt(sqrt(
                    vir_compensated[column][row] / (alpha_comp[column][row]
                    + tak_to_the_4th)
                    ))
                    - Zero_Celsius_in_Kelvin;
                }
            }

The CPU of a heavily loaded Raspberry Pi 3 can get very hot.

    watch 'cat /sys/class/thermal/thermal_zone0/temp;echo "scale=2;`cat /sys/class/thermal/thermal_zone0/temp` * 9 / 5000 + 32" | bc'

wp: prefix means Wikipedia
To get good answers, consider following the advice in the links below.
http://catb.org/~esr/faqs/smart-questions.html
http://web.archive.org/web/20090627155454/www.greenend.org.uk/rjk/2000/06/14/quoting.html

wp:Mathematica
(by a heavy stone)
wolfram.com/raspi
Free! (For non-commercial use)

    Wolfram Language & Mathematica for Raspberry Pi is free for hobbyist use.
    View license agreement ?
    Interested in deploying commercial devices with the Raspberry Pi?
    Please contact us.

Ethan recommended checking out pygame for colorizing GUI. Thanks Ethan.

[1] MLX90620 http://www1.futureelectronics.com/doc/MELEXIS/MLX90620ESF-BAB-000-TU.pdf
[2] man 2 ioctl
[3] wp:Unix_philosophy#Doug_McIlroy_on_Unix_programming
[4] wp:I?C

hack by wp:deadmau5

From eric at intellovations.com  Tue Mar 29 18:37:23 2016
From: eric at intellovations.com (Eric Floehr)
Date: Tue, 29 Mar 2016 18:37:23 -0400
Subject: [CentralOH] COhPy Challenge!
Message-ID: <CAJzarMNJ4hWu_D5ZEb94uoO67Qg_A0HMEMjEY7UK9ZXFbzdEsg@mail.gmail.com>

All,

I've posted the answers for the February Leap Day challenge here:

https://github.com/cohpy/challenge-201602-leapday

Note that this is different than the one I posted last night. I've moved
the repository from my personal github account (efloehr) to the cohpy
organizational account.

I've also created the repo for the March 2016 challenge, which is described
in the README:

https://github.com/cohpy/challenge-201603-temps

If you have any questions or improvements to the docs, submit an issue or
pull request!

Good luck!
Eric
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From jep200404 at columbus.rr.com  Wed Mar 30 14:56:22 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Wed, 30 Mar 2016 14:56:22 -0400
Subject: [CentralOH] =?utf-8?q?2016-03-30_=E6=9C=88=E7=87=95_Placemat_Scri?=
 =?utf-8?b?YmJsZXMg76SY5pu4L+aDoeaWhz86IGZlYXRoZXIgciBweXRob24gY3N2IGRi?=
 =?utf-8?q?f_json_yaml_trading_shim_tex_latex_publican_jupyter_intro_drago?=
 =?utf-8?q?n_book_aho_awk_coding_music_zmm_riders_pine_64_2GB_loaded_pi_vi?=
 =?utf-8?q?ce_tv_durian_39CDAN_gas?=
Message-ID: <20160330145622.78dda487.jep200404@columbus.rr.com>

only one signed up person showed up
eleven others just showed up

placemats were turned over and written and drawn on
macro with magnifying glasses

feather R Python collaboration apache
interchange formats csv dbf json yaml

http://trading-shim.org/
beautifully formatted mathematical formulas
TeX being replaced by docbook
rhat publican
tour of Ipython Notebook (now Jupyter)
http://pyvideo.org/video/1605/science-and-python-retrospective-of-a-mostly-s

the dragon book
wp:Compilers: Principles, Techniques, and Tools
wp:Alfred Aho
wp:AWK

wp: prefix means Wikipedia
To get good answers, consider following the advice in the links below.
http://catb.org/~esr/faqs/smart-questions.html
http://web.archive.org/web/20090627155454/www.greenend.org.uk/rjk/2000/06/14/quoting.html

music to code Python by:

    wp:Tierney Sutton
        Desire
        My Heart Belongs to Daddy

    most deadmau5
    babble
        ether
        the stone
    wp:Pop Pop

    wp:Ray Bradbury
    451
    wp:The Veldt (short story)
    https://www.youtube.com/watch?v=xvtNS6hbVy4
        one diner: Cool!
        one diner: creepy

seen north of campus
    How to Keep Your Volkswagen Alive
    Zen and the Art of Motorcycle Maintenance
    Four Riders of the Apocalypse

big bass brothers

Michelangelo Antonioni Blowup
Wizard of Oz suicide
Richard Brautigan Trout Fishing in America

    Pine 64 2GB
    RPi 2
        touchscreen display
        Iomega GKM681R wireless keyboard & pointer
        camera
            one dead
            one working

Commodore PET

Vice TV travelogs
    pakistan gun town
    india entertainers
    north korea

durian

1939 Chevrolet sedan in parking lot with flames
gas leak next door, fire trucks and Columbus Gas trucks, fortunately no flames

From jep200404 at columbus.rr.com  Wed Mar 30 20:31:25 2016
From: jep200404 at columbus.rr.com (jep200404 at columbus.rr.com)
Date: Wed, 30 Mar 2016 20:31:25 -0400
Subject: [CentralOH] Where to Eat for Square Root Day Python Lunch
Message-ID: <20160330203125.315f0305.jep200404@columbus.rr.com>

Where would you like to eat on Square Root Day?

Some connection with squares or square roots would be good.
Some places have a square shape.
    square buildings
    square fields (near baseball diamond)
Some places have square in their name like Worthington Square.

From eric at intellovations.com  Thu Mar 31 10:59:09 2016
From: eric at intellovations.com (Eric Floehr)
Date: Thu, 31 Mar 2016 10:59:09 -0400
Subject: [CentralOH] Where to Eat for Square Root Day Python Lunch
In-Reply-To: <20160330203125.315f0305.jep200404@columbus.rr.com>
References: <20160330203125.315f0305.jep200404@columbus.rr.com>
Message-ID: <CAJzarMNKoRxN2x_ayVJzrrQEBJgL+oDB3hfomDyQ0BckKYOm=g@mail.gmail.com>

I suggest Taj Palace in Hilliard. Why?

1. It's a buffet, and the buffet is approximately 4 feet tall, 4 feet deep,
and 16 feet long.

2. Taj Palace is named after Taj Mahal, which is a square mausoleum.

3. The Taj Mahal's 4 sides are identical.

4. The restaurant is on Mill Run Boulevard. Mills make lots of square and
rectangular lumber.

5. Taj Palace is located in Hilliard, and I am a square who has roots in
Hilliard.

I suggest we meet there at 12:04pm on Monday, which is 16:04 UTC.

Cheers!
Eric


On Wed, Mar 30, 2016 at 8:31 PM, <jep200404 at columbus.rr.com> wrote:

> Where would you like to eat on Square Root Day?
>
> Some connection with squares or square roots would be good.
> Some places have a square shape.
>     square buildings
>     square fields (near baseball diamond)
> Some places have square in their name like Worthington Square.
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
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From herrold at owlriver.com  Thu Mar 31 11:06:47 2016
From: herrold at owlriver.com (R P Herrold)
Date: Thu, 31 Mar 2016 11:06:47 -0400 (EDT)
Subject: [CentralOH] Where to Eat for Square Root Day Python Lunch
In-Reply-To: <CAJzarMNKoRxN2x_ayVJzrrQEBJgL+oDB3hfomDyQ0BckKYOm=g@mail.gmail.com>
References: <20160330203125.315f0305.jep200404@columbus.rr.com>
 <CAJzarMNKoRxN2x_ayVJzrrQEBJgL+oDB3hfomDyQ0BckKYOm=g@mail.gmail.com>
Message-ID: <alpine.LRH.2.03.1603311105060.30202@bjyevire.pbz>

On Thu, 31 Mar 2016, Eric Floehr wrote:

> I suggest we meet there at 12:04pm on Monday, which is 16:04 UTC.

not to distract, but in planning one's diging schedule, also 
next Tuesday evening, at 7 is the monthly 'keg-tapping' night 
at the Hoffbrau Haus on Goodale, near 315

-- Russ herrold

From miller.eric.t at gmail.com  Thu Mar 31 11:30:49 2016
From: miller.eric.t at gmail.com (Eric Miller)
Date: Thu, 31 Mar 2016 11:30:49 -0400
Subject: [CentralOH] Where to Eat for Square Root Day Python Lunch
In-Reply-To: <CAJzarMNKoRxN2x_ayVJzrrQEBJgL+oDB3hfomDyQ0BckKYOm=g@mail.gmail.com>
References: <20160330203125.315f0305.jep200404@columbus.rr.com>
 <CAJzarMNKoRxN2x_ayVJzrrQEBJgL+oDB3hfomDyQ0BckKYOm=g@mail.gmail.com>
Message-ID: <CAN67YM7pzAM-QX68unURaJLvyrVHNT7ew2p3Hn+VcEN0ymWEnw@mail.gmail.com>

>12:04pm on Monday, which is 16:04 UTC.
lol.  'it's five o'clock somewhere....'

On Thu, Mar 31, 2016 at 10:59 AM, Eric Floehr <eric at intellovations.com>
wrote:

> I suggest Taj Palace in Hilliard. Why?
>
> 1. It's a buffet, and the buffet is approximately 4 feet tall, 4 feet
> deep, and 16 feet long.
>
> 2. Taj Palace is named after Taj Mahal, which is a square mausoleum.
>
> 3. The Taj Mahal's 4 sides are identical.
>
> 4. The restaurant is on Mill Run Boulevard. Mills make lots of square and
> rectangular lumber.
>
> 5. Taj Palace is located in Hilliard, and I am a square who has roots in
> Hilliard.
>
> I suggest we meet there at 12:04pm on Monday, which is 16:04 UTC.
>
> Cheers!
> Eric
>
>
> On Wed, Mar 30, 2016 at 8:31 PM, <jep200404 at columbus.rr.com> wrote:
>
>> Where would you like to eat on Square Root Day?
>>
>> Some connection with squares or square roots would be good.
>> Some places have a square shape.
>>     square buildings
>>     square fields (near baseball diamond)
>> Some places have square in their name like Worthington Square.
>> _______________________________________________
>> CentralOH mailing list
>> CentralOH at python.org
>> https://mail.python.org/mailman/listinfo/centraloh
>>
>
>
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
>
>
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From eric at intellovations.com  Thu Mar 31 14:09:41 2016
From: eric at intellovations.com (Eric Floehr)
Date: Thu, 31 Mar 2016 14:09:41 -0400
Subject: [CentralOH] Square Root Day Python Lunch
Message-ID: <CAJzarMMT+1LuHa6AEpJ6d6AQ3viYspRP0DsvArK9nWGe5k_ZCA@mail.gmail.com>

Monday, April 4, 2016 is Square Root Day. A day where the month and day are
the square root of the two-digit year (4/4/16).  The next Square Root Day
will not occur for 9 years (5/5/25).

Join us for lunch Monday to talk Python, programming, or anything else and
to celebrate this uniquely special day!

Where:
Taj Palace
3794 Fishinger Blvd.
Hilliard, Ohio 43026

When:
12:04 EDT / 16:04 UTC

RSVP Here:
http://www.meetup.com/Central-Ohio-Python-Users-Group/events/230023044/
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From bim at digitalbim.com  Thu Mar 31 23:53:13 2016
From: bim at digitalbim.com (Bim Walker)
Date: Thu, 31 Mar 2016 23:53:13 -0400
Subject: [CentralOH] Where to Eat for Square Root Day Python Lunch
In-Reply-To: <CAJzarMNKoRxN2x_ayVJzrrQEBJgL+oDB3hfomDyQ0BckKYOm=g@mail.gmail.com>
References: <20160330203125.315f0305.jep200404@columbus.rr.com>
 <CAJzarMNKoRxN2x_ayVJzrrQEBJgL+oDB3hfomDyQ0BckKYOm=g@mail.gmail.com>
Message-ID: <088D54AC-2B7B-4CB5-9434-ECFBEC4A8757@digitalbim.com>


6. Taj Mahal is a great Blues artist.  Almost all of his songs are in 4/4 time.



On Mar 31, 2016, at 10:59 AM, Eric Floehr <eric at intellovations.com> wrote:

> I suggest Taj Palace in Hilliard. Why?
> 
> 1. It's a buffet, and the buffet is approximately 4 feet tall, 4 feet deep, and 16 feet long.
> 
> 2. Taj Palace is named after Taj Mahal, which is a square mausoleum.
> 
> 3. The Taj Mahal's 4 sides are identical.
> 
> 4. The restaurant is on Mill Run Boulevard. Mills make lots of square and rectangular lumber.
> 
> 5. Taj Palace is located in Hilliard, and I am a square who has roots in Hilliard.
> 
> I suggest we meet there at 12:04pm on Monday, which is 16:04 UTC.
> 
> Cheers!
> Eric
> 
> 
> On Wed, Mar 30, 2016 at 8:31 PM, <jep200404 at columbus.rr.com> wrote:
> Where would you like to eat on Square Root Day?
> 
> Some connection with squares or square roots would be good.
> Some places have a square shape.
>     square buildings
>     square fields (near baseball diamond)
> Some places have square in their name like Worthington Square.
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh
> 
> _______________________________________________
> CentralOH mailing list
> CentralOH at python.org
> https://mail.python.org/mailman/listinfo/centraloh

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