🌐 Mailman 3 May 2020 - Python-list - python.org

Re: Floating point problem
by ast June 23, 2020

June 23, 2020

Le 17/04/2020 à 13:40, Aakash Jana a écrit : > I am running python 3.8 only but my issue is I need more zeroes after my > result. > I want 2/5 = 0.400000 > But I am only getting 0.4 f"{2/5:.6f}" '0.400000'

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Re: How to test?
by Manfred Lotz June 20, 2020

June 20, 2020

On Mon, 27 Apr 2020 18:21:39 +1200 DL Neil <PythonList(a)DancesWithMice.info> wrote: ... > > Given your replies, 'now' might be a good time to take a look at > Pytest, and see how you could use it to help build better code - by > building tested units/functions which are assembled into ever-larger > tested-units... (there is a range of choice/other testing aids if > Pytest doesn't take your fancy) I have to admit I chose unittest. Simply because it is in the standard lbrary. As so many people seem to prefer pytest I should take a look at it. -- Manfred

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How to test?
by Manfred Lotz June 19, 2020

June 19, 2020

I have a command like application which checks a directory tree for certain things. If there are errors then messages will be written to stdout. How to test this in the best way? One idea was for the error situations to write messages to files and then later when running the tests to compare the error messages output to the previously saved output. Is there anything better? -- Thanks, Manfred

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Is there some reason that recent Windows 3.6 releases don't included executable nor msi installers?
by Adam Preble June 7, 2020

June 7, 2020

I wanted to update from 3.6.8 on Windows without necessarily moving on to 3.7+ (yet), so I thought I'd try 3.6.9 or 3.6.10. All I see for both are source archives: https://www.python.org/downloads/release/python-369/ https://www.python.org/downloads/release/python-3610/ So, uh, I theoretically did build a 3.6.10 .exe installer, but I don't really trust I did everything right. Is there an officially sourced installation?

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Python with text editor
by Preetha M June 4, 2020

June 4, 2020

Hello. Thank you for responding to my previous mail. Can someone tell me how to connect python to sublime text 3. Whenever I select python and type the code, it does not work when I press ctrl+B. Please tell.

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Re: Binary Sort on Python List __xor__
by Evan Schalton June 1, 2020

June 1, 2020

I think you're arguing both sides of the argument -- numpy arrays do have a lot of similar, related operations (because numpy uses them internally -- since they're more efficient) which means they're not fringe. I'm advocating that the built-in list class add the efficient, convenience methods -- especially since it wouldn't be overriding other methods, it would be leveraging standard methods that are currently unimplemented

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Spotify Playlist
by giovanni.braschi2＠gmail.com June 1, 2020

June 1, 2020

Hi everyone, first of all I must say I'm NOT a Python expert. In reality, I've never even used Python, but I know that it is a super powerful tool, useful in many contexts, also in Spotify. 2nd disclaimer: English is not my first language so I'll try to explain what I want to ask in the best way possible. So, this is my problem: I am a playlist curator on Spotify, with more than 50.000 followers over all through out all my playlist. Lately, people started falsely reporting playlists on Spotify to gain a better rank in Spotify search algorithm. (if you search on the web, you will find that is becoming more and more common) Each time a playlist is reported, the title, description and image disappear BEFORE the Spotify team check if the report is actually true or not. You will understand that this leads to a MASSIVE abuse of this tool, you just need to fill a form with name, telephone number and email and you can make this report. Obviously, people are filling this form with fake mails and identities. This means that a fraudulent user can report your playlist 10000000 times a day, and there is nothing you can do against it, because if Spotify bans his fake "mail" he will fill the form with another fake email. This also means that if the reporter flag my playlist 10.000 times, I have to rewrite title, caption and upload user 10.000 times, and it is absolutely absurd. I sent hundreds of mail to the spotify team, they told me they are working to fix it, but currently there is no way to stop this (THIS IS CRAZY!) So my question is: is there a way to create a code with Python, that auto rewrite the title of a playlist each time Python sees the title has disappeared? For example: The reporter reports my playlist --> Title, Description and Image are gone (until I don't rewrite them again) Python notices that the title is gone and automatically rewrite the title and caption Do you think this is possible? I am willing to pay for someone making this code for me, because these fake reports are becoming more and more frequent, and as a music blogger, Spotify Playlists are a part of my income. I can't stay 24/7 at home rewriting the titles of my falsely reported playlist (with no reason) Hope this was clear enough, thank you!

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why no camelCase in PEP 8?
by Lance E Sloan June 1, 2020

June 1, 2020

I've been using Python for about 18 years. Several things have changed in the language in those years. I don't disagree with most of it, but one of the things that annoys me is the disapproval of using camelCase to name symbols such as variables, functions, etc. I think PEP 8, the "Style Guide for Python Code" (https://www.python.org/dev/peps/pep-0008/), came out shortly after I began using Python. I think the old habits of the people I worked with and the relative lack of tools like Flake8 and Pylint led to the standard being ignored. However, now I see many developers really want to adhere to the standard. My preference for using camelCase (in PEP 8, AKA mixedCase) is putting me at odds with my colleagues, who point to PEP 8 as "the rules". I have reasons for my preferring camelCase. I suspect the reasons the PEP 8 authors have for not using it are probably as strong as my reasons. So our reasons probably nullify each other and what's left is simple preference. So, I'd like to know what was the reason behind favoring snake_case (AKA lower_case_with_underscores) in PEP 8 instead of camelCase. Does anyone in this group know?

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Re: Binary Sort on Python List __xor__
by Evan Schalton June 1, 2020

June 1, 2020

Peter, This isn't a ram consideration as much it's a logical consideration. There are a lot of ways to handle this, I REALLY don't want to use a package here. Bit masking is incredibly useful for permutations/combinatoric algorithms. I can create my own class wrapper or functions, and optimize, but think that the __and__ operator would be a really useful syntactic tool. It would streamline these types of operations and *hopefully* help people write more efficient code. I'm less strictly interested in the & operator explicitly working with a bit int, but think it'd be great if the was a built-in filter something like: [1,2,3,4] & [0,0,1,1] => [3,4] OR [1,2,3,4] & [False, False, True, True] = [3,4]

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Re: I cannot download python files from external source.
by MRAB May 31, 2020

May 31, 2020

On 2020-05-31 15:36, Michio Suginoo wrote: > Thanks MRAB, > > I try to download the external file in .ipynb. > And I get the message attached herewith. > > And this is not the first time, it has been like this. And I have > never been able to download any python file. > I just wonder if it has anything to do with the setting of my computer. > As I've already said, that's just the installer. It isn't used to download files. Where is the file? Is it on a website? If yes, download it using a browser. Here's an example: https://www.usna.edu/Users/math/uhan/sa421/2014f/ipynb-download.html

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