🌐 Mailman 3 November 2018 - Python-list - python.org

Basic pynomo instructions not working
by Adam Funk Nov. 22, 2018

Nov. 22, 2018

Hi, I'm trying to use the basic stuff in pynomo <https://github.com/dbaynard/pynomo> which I've installed with pip3, but I run into this problem trying to the basic stuff in the documentation: #v+ $ python3 Python 3.6.7 (default, Oct 22 2018, 11:32:17) [GCC 8.2.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> from pynomo.nomographer import * Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/adam/.local/lib/python3.6/site-packages/pynomo/nomographer.py", line 16, in <module> from nomo_wrapper import * ModuleNotFoundError: No module named 'nomo_wrapper' >>> import pynomo >>> import pynomo.nomographer Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/adam/.local/lib/python3.6/site-packages/pynomo/nomographer.py", line 16, in <module> from nomo_wrapper import * ModuleNotFoundError: No module named 'nomo_wrapper' >>> #v- Any ideas? Thanks.

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Need help for python on my pc.
by Sourav Banik Nov. 22, 2018

Nov. 22, 2018

Hello Python team, I'm using python 3.7(32 bit) for several months on my same laptop (x64 processor). I worked on some django project very swiftly without any problem. But for a few days I am facing a serious problem. My python files are not showing properly by the file manager. It is just showing 'python source file' without any logo. When I open my cmd to work on django, it is not also working though virtualenv is working properly I think. I'm sending some screenshots of cmd and files for your reference. I've tried reinstalling (64 bit) and repairing of python but nothing is working. I want your help to sort out this issue. From Sourav Banik, Dhaka,Bangladesh.

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Need help for python on my pc.
by Sourav Banik Nov. 22, 2018

Nov. 22, 2018

Hello Python team, I'm using python 3.7(32 bit) for several months on my same laptop (x64 processor). I worked on some django project very swiftly without any problem. But for a few days I am facing a serious problem. My python files are not showing properly by the file manager. It is just showing 'python source file' without any logo. When I open my cmd to work on django, it is not also working though virtualenv is working properly I think. I'm sending some screenshots of cmd and files for your reference. I've tried reinstalling (64 bit) and repairing of python but nothing is working. I want your help to sort out this issue. From Sourav Banik, Dhaka,Bangladesh.

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Asyncio tasks getting cancelled
by ike＠koeln.ccc.de Nov. 22, 2018

Nov. 22, 2018

Hi all, I'm having trouble with asyncio. Apparently tasks (asyncio.create_task) are not kept referenced by asyncio itself, causing the task to be cancelled when the creating function finishes (and noone is awaiting the corresponding futue). Am I doing something wrong or is this expected behavior? The code sample I tried: > import asyncio > > async def foobar(): > print(1) > await asyncio.sleep(1) > print(2) > > async def main(): > asyncio.create_task(foobar()) > #await asyncio.sleep(2) > > loop = asyncio.get_event_loop() > asyncio.run(main()) > loop.run_forever() The sample does print "2" only when uncommenting the asyncio.sleep(2) line. Greetings.

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Re: question on the 'calendar' function
by marco.nawijn＠colosso.nl Nov. 22, 2018

Nov. 22, 2018

On Tuesday, November 20, 2018 at 7:53:06 PM UTC+1, o1bigtenor wrote: > On Tue, Nov 20, 2018 at 11:50 AM Schachner, Joseph > <Joseph.Schachner(a)teledyne.com> wrote: > > > > It's possible I don't understand the question. The calendar functions are NOT limited to this year or any limited range. > > > > Example: > > import calendar > > print( calendar.monthcalendar(2022, 12) ) > > > > Prints lists of dates in each week of December 2022. It prints: > > [[0, 0, 0, 1, 2, 3, 4], [5, 6, 7, 8, 9, 10, 11], [12, 13, 14, 15, 16, 17, 18], [19, 20, 21, 22, 23, 24, 25], [26, 27, 28, 29, 30, 31, 0]] > > > > So, Dec 1 is a Wednesday; Dec 31 is a Saturday. > > > > That's 49 months ahead of this month. Change the year and month to any (valid) number, and it will do what it does. > > The only caveat is that if the moon's orbit slows down as it gets farther away from the earth and the earth's rotation speed changes, then the calculations done by calendar for leap years may not be correct about the distant future. > > > > Greetings > > If my syntax or commands are wrong - - - - I've just started so > something is likely to NOT be correct - - - grin - - - I'sa noob! > > # calendar 2019 > > that is to show the year 2019 > > How could I show June 2018 to Dec 2019, inclusive? > Or June 2018 to Dec 2021, inclusive? > Or June 2018 to Dec 2023 by week (June wk 1,2,3,4 2018; July wk > 1,2,3,4,5 2018; . . . Dec wk 1,2,3,4,5 2023 or maybe even by dates), > inclusive? > > Note that the time frame is ALWAYS more than 1 year. > AIUI there isn't a way to do that, at least not that I can see, and I > would like to be able to do that. > A friend suggested using a script wrapped around the command. I > thought maybe there might we a way of doing what I need to do without > using 2 levels of programming. > > Regards >From what you post it seems like you are on a Linux kind of system and you are running the `calendar` command in the bash terminal. If that is correct, try the following: In the bash terminal type (without the literal #): # python This will put you in the Python prompt (marked with >>>). Check that the first line starts with Python 3. If not, I highly recommend you install Python 3. If it is Python two, the following will work, but you have to drop the outer parentheses for print (thus print calendar.calendar()) Then type the following: >>> import calendar >>> print(calendar.calendar(2020)) This will show: 2020 January February March Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su 1 2 3 4 5 1 2 1 6 7 8 9 10 11 12 3 4 5 6 7 8 9 2 3 4 5 6 7 8 13 14 15 16 17 18 19 10 11 12 13 14 15 16 9 10 11 12 13 14 15 20 21 22 23 24 25 26 17 18 19 20 21 22 23 16 17 18 19 20 21 22 27 28 29 30 31 24 25 26 27 28 29 23 24 25 26 27 28 29 30 31 April May June Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su 1 2 3 4 5 1 2 3 1 2 3 4 5 6 7 6 7 8 9 10 11 12 4 5 6 7 8 9 10 8 9 10 11 12 13 14 13 14 15 16 17 18 19 11 12 13 14 15 16 17 15 16 17 18 19 20 21 20 21 22 23 24 25 26 18 19 20 21 22 23 24 22 23 24 25 26 27 28 27 28 29 30 25 26 27 28 29 30 31 29 30 July August September Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su 1 2 3 4 5 1 2 1 2 3 4 5 6 6 7 8 9 10 11 12 3 4 5 6 7 8 9 7 8 9 10 11 12 13 13 14 15 16 17 18 19 10 11 12 13 14 15 16 14 15 16 17 18 19 20 20 21 22 23 24 25 26 17 18 19 20 21 22 23 21 22 23 24 25 26 27 27 28 29 30 31 24 25 26 27 28 29 30 28 29 30 31 October November December Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su 1 2 3 4 1 1 2 3 4 5 6 5 6 7 8 9 10 11 2 3 4 5 6 7 8 7 8 9 10 11 12 13 12 13 14 15 16 17 18 9 10 11 12 13 14 15 14 15 16 17 18 19 20 19 20 21 22 23 24 25 16 17 18 19 20 21 22 21 22 23 24 25 26 27 26 27 28 29 30 31 23 24 25 26 27 28 29 28 29 30 31 30 Now look at the documentation of the calendar module to find out about other options. Marco

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Re: question on the 'calendar' function
by mm0fmf Nov. 22, 2018

Nov. 22, 2018

On 21/11/2018 12:27, o1bigtenor wrote: [Stuff clipped] > > What I need is to be able to have more than one calendar year options and this > function seems to be limited to work with a maximum of only one year at a time. > > If I not reading the documentation correctly - - - please advise. > (Thanking you for your generous assistance in the foregoing!) > > Regards > You need to write a program (in Python) to do that using the methods in the calendar module. HINT: print out the calendar for each month you are interested in and use a loop of some kind to generate the year/month data to feed to calendar methods from a starting and stopping date. There will be many other ways of doing this but a solution that works, even if ugly, is better than no solution.

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question on the 'calendar' function
by o1bigtenor Nov. 21, 2018

Nov. 21, 2018

Greetings I am in the process of learning my first computer programming language (unless g-code counts and then it is my second - - - grin). It definitely is a big world out there. The calendar function has a lot of versatility and shows care in its development. There is one area where I don't understand if I even could use this function or if I need to look to something(s) else to achieve what I need. For planning I need to be able to easily look backward 6 months and forward at least 12 and better 18 months and would prefer perhaps even a total of 36 (and even 60 might be useful) months of calendar available. It could be useful to see the longer time spans as weeks rather than as days but seeing the larger time frames only as months would enable the planning that I need to do. Do I need to (somehow and I have no idea how) extend the calendar function? Is there some other way of displaying dates/calendars that would allow me to achieve my needed span? TIA

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Re: Reading 'scientific' csv using Pandas?
by Martin Schöön Nov. 21, 2018

Nov. 21, 2018

Den 2018-11-19 skrev Peter Otten <__peter__(a)web.de>: > Martin Schöön wrote: > >> My pandas is up to date. >> > > The engine="python" produces an exception over here: > > """ > ValueError: The 'decimal' option is not supported with the 'python' engine > """ > > Maybe you can try and omit that option? Bingo! No, I don't remember why I added that engine thing. It was two days ago! > If that doesn't work you can specify a converter: > >>>> pd.read_csv("file.csv", sep="\t", converters={0: lambda s: > float(s.replace(",", "."))}) > col1 col2 > 0 1.100000e+00 0 > 1 1.024000e-04 1 > 2 9.492000e-10 2 > > [3 rows x 2 columns] > I save that one for later. One never nows... /Martin

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Re: bottledaemon stop/start doesn't work if killed elsewhere
by Adam Funk Nov. 20, 2018

Nov. 20, 2018

On 2018-11-18, Dan Sommers wrote: > On 11/18/18 1:21 PM, MRAB wrote:> On 2018-11-18 17:50, Adam Funk wrote: > >> Hi, > >> > >> I'm using bottledaemon to run a little REST service on a Pi that takes > >> input from other machines on the LAN and stores stuff in a database. > >> I have a cron job to call 'stop' and 'start' on it daily, just in case > >> of problems. > >> > >> Occasionally the oom-killer runs overnight and kills the process using > >> bottledaemon; when this happens (unlike properly stopping the daemon), > >> the pidfile and its lockfile are left on the filesystem, so the 'stop' > >> does nothing and the 'start' gets refusedq because the old pidfile and > >> lockfile are present. At the moment, I eventually notice something > >> wrong with the output data, ssh into the Pi, and rm the two files then > >> call 'start' on the daemon again. > >> > >> Is there a recommended or good way to handle this situation > >> automatically? > >> > > Could you write a watchdog daemon that checks whether bottledaemon is > > running, and deletes those files if it isn't (or hasn't been for a > while)? > > What if the oom-killer kills the watchdog? > > Whatever runs in response to the start command has to be smarter: if > the pid and lock files exist, then check whether they refer to a > currently running bottledaemon. If so, then all is well, and refuse to > start a redundant daemon. If not, then remove the pid and lock files > and start the daemon. I've reported this as an issue on github. It seems to me that the 'stop' subcommand should delete the pidfile and lockfile if the pid is no longer running. -- It's like a pair of eyes. You're looking at the umlaut, and it's looking at you. ---David St. Hubbins

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Re: Suggestions for plotting slide rule & sector scales?
by Adam Funk Nov. 20, 2018

Nov. 20, 2018

On 2018-11-08, Stefan Ram wrote: > Adam Funk <a24061(a)ducksburg.com> writes: >>and get a line 100 mm long with a log scale on the top and a linear >>scale on the bottom. > > From what I have heard, > > pyqt.sourceforge.net/Docs/PyQt4/qx11info.html#appDpiX > > will give you the dots per inch (link not validated). > > matplotlib.axis.Axis handles drawing of t tick lines, > grid lines, tick and axis label (information not verified). I hadn't thought of using matplotlib to do axes only, without the rest of the graph --- interesting idea. I've also found pynomo, which looks more appropriate, but I'm having problems with that (see other post). -- Physics is like sex. Sure, it may give some practical results, but that's not why we do it. ---Richard Feynman

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