🌐 Mailman 3 June 2019 - Python-list - python.org

python
by kayanjaismail070＠gmail.com June 30, 2019

June 30, 2019

Use a while loop and write a python program to display the first n, numbers divisible by both 3 and 5 . the amount of numbers to be displayed should be dictated by the user input (Hint: if the users 10, then the numbers divisible by both 4 and 5 to be displayed should be 10)

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Re: I have anaconda, but Pycharm can't find it
by mmuratkutlu＠gmail.com June 30, 2019

June 30, 2019

Hi everyone, I know this problem's solution because I solve in my computer. First of all, you can delete the project files. After that download python on official website and last version. after this step restart pycharm and create new project... Good luck

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Re: Handle foreign character web input
by Richard Damon June 30, 2019

June 30, 2019

On 6/30/19 4:00 AM, moi wrote: > Le samedi 29 juin 2019 19:25:40 UTC+2, Richard Damon a écrit : >> >> Now (as I understand it), all Python (3) 'Strings' are internally >> Unicode, if you need something with a different encoding it needs to be >> in Bytes. >> >> -- > > Unfortunately not. > > The only thing Python succeeds to propose is a mechanism > which does the opposite of UTF-8 when it comes to handle > memory *and* - at the same time - which also does the opposite > of UTF-32 regarding performance. > > For some other reasons, this mechanism leads to buggy > code. > My understanding was that the Python 3 'String' class always used a Unicode encoding (never a code-page encoding). If you indexed into a string you would get at each location the full code point value of that character. Now Unicode isn't just UTF-8 or UTF-32/UCS-4 or the like, those are just different ways to encode into memory/a stream Unicode code points. It may be that Python makes some awkward choices of how it wants to store the characters in memory, but to the programmer, it is just Unicode code points. If you specifically want something list a UTF-8 encoding, that is one of the usages of Bytes was.

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Re: Make sure the window title is visible in tkinter
by Cousin Stanley June 30, 2019

June 30, 2019

Cousin Stanley wrote .... >> You might try setting a given window geometry >> to accomodate the long title .... >> >> win_w = 400 >> win_h = 300 >> >> ofs_h = 40 >> ofs_v = 30 >> >> window.geometry( "%dx%d+%d+%d" % ( win_w , win_h , ofs_h , ofs_v ) ) >> >> >> Maybe add a bit of extra space for users >> with different default font sizes .... >> >> Not a general solution >> but perhaps workable .... moi wrote .... > No, huge mistake. It isn't clear to me how specifying a particular geometry for one's own self-coded tkinter gui prgrams with windows that are resize-able would be a mistake .... > Take for example the Windows installer. > > The window is so small, you can not even read the path > where Python will be installed. > > Bonus: the windows is not resizable and part of items > are not even visible. > > It would be to bad to not mimic this behavior. > > Just tested it 2 min ago on my Windows 7.1 with py3.7.3. I didn't suggest modifying 3rd party programs, but the suggestion I offered was meant to be applied to one's own code .... I have used a given geometry for dozens of my own tkinter gui programs such that a modest window size which assures that all widgets are viewable when first presented to the user .... -- Stanley C. Kitching Human Being Phoenix, Arizona

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EuroPython 2019: Introducing MongoDB
by M.-A. Lemburg June 30, 2019

June 30, 2019

We are very pleased to have MongoDB as Keystone Sponsor for EuroPython 2019. You can visit them at the most central booth in our exhibit area on the second floor in the Congress Center Basel (CCB), and take the opportunity to chat with their staff and learn more about the MongoDB eco-system. Please find below a hosted blog post from MongoDB. Enjoy, – EuroPython 2019 Team https://ep2019.europython.eu/ https://www.europython-society.org/ MongoDB ❤ Python ---------------- MongoDB is the leading modern, general-purpose database platform, designed to unleash the power of software and data for developers and the applications they build. We have architected our database to cater to the needs of modern-day applications from the ground-up with built-in support for high availability through sophisticated replication with self-healing recovery and horizontal scalability through native sharding. MongoDB Atlas is our fully-automated database-as-a-service offering, engineered and run by the same team that builds the database. At MongoDB, it is our mission to make data ridiculously easy to work with and we love, love, LOVE Python because it helps us do exactly that. To bring the power of MongoDB to the Python ecosystem, we’ve developed PyMongo - the Python driver for MongoDB. With over 3 million downloads per month, PyMongo is one of our most popular drivers. Our Driver team also maintains Motor - an asynchronous Python driver for MongoDB and PyMODM - our object-document mapper. While Python is an important and popular tool for our users, it is also an integral part of developer workflows across our engineering teams. Our Documentation team, for instance, maintains the Giza library which is used to render the entire official MongoDB documentation. Our Education team builds MongoDB University with Django and uses PyMODM and MongoDB Atlas to store application data. The University site has over 1 million registered users and over 100,000 active users per month–all powered by MongoDB. Python is also an integral part of our CI/CD process used to test our core database and all drivers. Join us at our workshop where we will teach you how to harness the power of MongoDB Atlas to build a highly-available CRUD application using Flask and PyMongo. You will learn more about MongoDB’s document data model, how we ensure high-availability and best practices for building applications using MongoDB. We will also showcase how to build the same application in MongoDB Stitch - our serverless platform. Bring your laptops! MongoDB is proud to support the Python community. In the past, we have sponsored conferences such as PyCon and PyGotham, and also hosted meetups such as PyLadies. Drop by our booth (#10) to say ‘hi’ to our awesome team and to learn more about Python at MongoDB! You can also join the conversation with other MongoDB and Python community members in our Community Slack Workspace. Register at http://launchpass.com/mongo-d or login at http://mongo-db.slack.com.

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EuroPython 2019: More Attendee Updates
by M.-A. Lemburg June 30, 2019

June 30, 2019

We have had a whole set of updates in the last two days. In order not to spam you too much with all the blog post texts, we're sending out a summary. EuroPython 2019 Keynotes ------------------------ We are proud to announce our keynote lineup for EuroPython 2019: - AI in Contemporary Art by Luba Elliott - Are women underrepresented in the High Performance Computing (HPC) community? by Athina Frantzana - Getting Your Data Joie De Vivre Back! by Lynn Cherny - Python Performance: Past, Present and Future by Victor Stinner - Why You Should Pursue Public Speaking and How to Get There by Yenny Cheung Full text: https://blog.europython.eu/post/185904088457/europython-2019-keynotes EuroPython 2019: Call for On-site Volunteers -------------------------------------------- Ever wanted to help out during Europython ? Do you want to *really* take part in EuroPython, meet new people and help them at the same time ? We have just the right thing for you: apply as EuroPython Volunteer and be part of the great team that is making EuroPython 2019 a reality this year. Full text and how to sign up: https://blog.europython.eu/post/185904252962/europython-2019-call-for-on-si… EuroPython 2019: Social event tickets available ----------------------------------------------- After the keynotes and talks on Thursday, July 11th, we’ve organized a social event at the workshop venue, the FHNW Muttenz. Starting at 19:00 CEST, you can join us for an evening party with finger food, drinks and music. Full text: https://blog.europython.eu/post/185929674552/europython-2019-social-event-t… EuroPython 2019: SIM cards for attendees ---------------------------------------- Switzerland is often not included in European cell provider’s roaming packages and also not covered by the EU roaming regulation, so you can potentially incur significant charges when going online with your mobile or notebook. In order to make things easier for you, we have purchased 300 SIM cards from a local Swiss cell provider, which we will make available in our ticket shop. After purchase, you can then pick up the cards at the registration desk (please bring your receipt). Full text and how to buy: https://blog.europython.eu/post/185929675562/europython-2019-sim-cards-for-… Dates and Venues ---------------- EuroPython will be held from July 8-14 2019 in Basel, Switzerland, at the Congress Center Basel (CCB) for the main conference days (Wed-Fri) and the FHNW Muttenz for the workshops/trainings/sprints days (Mon-Tue, Sat-Sun). The schedule is available at: https://ep2019.europython.eu/events/schedule/ Tickets can be purchased on our registration page: https://ep2019.europython.eu/registration/buy-tickets/ For more details, please have a look at our website and the FAQ: https://ep2019.europython.eu/faq Help spread the word -------------------- Please help us spread this message by sharing it on your social networks as widely as possible. Thank you ! Link to the blog posts: https://blog.europython.eu/ Tweets: https://twitter.com/europython/ Enjoy, -- EuroPython 2019 Team https://ep2019.europython.eu/ https://www.europython-society.org/

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How do you insert an item into a dictionary (in python 3.7.2)?
by CrazyVideoGamez June 29, 2019

June 29, 2019

How do you insert an item into a dictionary? For example, I make a dictionary called "dictionary". dictionary = {1: 'value1', 2: 'value3'} What if I wanted to add a value2 in the middle of value1 and value3?

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Re: Use global, or not
by Cecil Westerhof June 29, 2019

June 29, 2019

DL Neil <PythonList(a)DancesWithMice.info> writes: > On 29/06/19 1:44 AM, Cecil Westerhof wrote: >> I have written a GUI program where I have quit a few global variables. >> I did not like this, so I now use one global dict. Something like: >> global global_dict > ... > >> Is that an acceptable way to do this? > > > If it works, isn't that the largest part of "acceptable"? Depends on your way of thinking. ;-) I think it is always best when you write in a language to do it in that languages way. In this case Python. I also think this is a program that could be interesting to share. Then it becomes even more important to do it the Python way. And my experience is that when asking this type of question you often get a tip that helps you make your program better. > In each case, (previously discussed and/or below) you are taking > advantage of "namespaces" to keep one 'lot' of values separated and > distinct from others - as well as finding a means of 'passing them > around'. The other half of the considerations is how the values are > being retrieved/utilised within the mainline code. > > An alternative might be to use a class. Then accessing a single value > becomes instance.attribute, but when you have need for several > attribute's values or to compute a value from several attributes, an > instance.method() may simplify things. That was the other possibility I was thinking about. And that would be maybe better. Because I now do things like: global_dict['messages']['created'].format(len(filepathArr)) much better would be: instance.created(len(filepathArr)) -- Cecil Westerhof Senior Software Engineer LinkedIn: http://www.linkedin.com/in/cecilwesterhof

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Plumbing behind super()
by adam.preble＠gmail.com June 29, 2019

June 29, 2019

I'm trying to mimick Python 3.6 as a .NET science project and have started to get into subclassing. The super() not-a-keyword-honestly-guys has tripped me up. I have to admit that I've professionally been doing a ton Python 2.7, so I'm not good on my Python 3.6 trivia yet. I think I have the general gist of this, but want some affirmation. If you use super() in a method, all it does is load super as a global on to the interpreter stack and call it without any arguments. So I'm left to wonder how it's able to figure anything out when it's being literally given nothing... except that it's not being given literally nothing: static PyObject * super_getattro(PyObject *self, PyObject *name) I was thinking maybe self has become more special in Python 3.6, but I don't think that's true since I've ported code to Python3 before that had inner classes where I'd use "inner_self" to disambiguate with the outer self. And though I thought it was so at first, it just turned out I screwed up my little code snippet to expose it. If self was special then I presume I could find it in my lookups and inject it. So how do I go from CALL_FUNCTION on a super() global without anything else on the stack to somehow having all the information I need? Is there something tracking that I'm in an object scope when calling stuff?

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change spacing to two instead of four with pep8 or flake8?
by Dennis June 29, 2019

June 29, 2019

Hi, In Pylint you can change the spacing multiplier from 4 spaces to two in its pylintrc, but for the life of me I cannot find a way to do this with the flake8 / pep8 utilities. I want to avoid ignoring E111 altogether if at all possible, because it may catch other spacing problems that are not as obvious. hacky/non-hacky solutions welcome of course. If this is too specific and I should go to the pep8/flake8 MLs that is welcome advice too. Thanks, Dennis

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