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

Error 0x80070570 while installing Python.
by Ajisekola Adeyemi May 3, 2020

May 3, 2020

Good day sir. I tried several times to install the latest version of Python which I downloaded from python.org but I keep getting error 0x80070570. I have done Window Update. And I also downloaded lower version but the same error keep popping up. I am using Compaq mini laptop with Window 7(32bit). I will appreciate if you can assist me in solving this problem. Thanks. On Sun, May 3, 2020, 12:09 AM Ajisekola Adeyemi <dycrulah2006(a)gmail.com> wrote: > Good day sir. I tried several times to install the latest version of > Python which I downloaded from python.org but I keep getting > error 0x80070570. I have done Window Update. And I also downloaded lower > version but the same error keep popping up. I am using Compaq mini laptop > with Window 7(32bit). > I will appreciate if you can assist me in solving this problem. Thanks. >

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OT-Comic: Tabs vs Spaces
by DL Neil May 2, 2020

May 2, 2020

Is this the way to write Python Enhancement Proposals (PEPs)? eg https://www.python.org/dev/peps/pep-0008/#indentation TabError: inconsistent use of tabs and spaces in indentation https://www.geeksaresexy.net/2020/05/01/the-tab-club-comic/ -- Regards, =dn

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Docs - beyond tabs, spaces, PEPs...
by DL Neil May 2, 2020

May 2, 2020

To make-up to those people who frowned at the earlier OT-Comic post... There are changes in-the-wind, in the way Python should/could be documented. Currently, there is a difficulty in 'scaling' the documentation to cope with the growing range of language user-types, as well as keeping-up with new developments in the language, and providing documentation for different purposes. Possibilities for wider community involvement? https://pyfound.blogspot.com/2020/04/cpython-documentation-next-5-years.html -- Regards, =dn

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error in CSV resetting with seek(0)
by Rahul Gupta May 2, 2020

May 2, 2020

consider the following code import csv import numpy as np with open("D:\PHD\obranking\\demo.csv", mode='r') as csv_file1, open("D:\PHD\obranking\\demo.csv", mode='r') as csv_file2: csv_reader1 = csv.DictReader(csv_file1) csv_reader2 = csv.DictReader(csv_file2) filename = "cell_split_demo.csv" with open("D:\PHD\obranking\\cell_split_demo.csv", 'w') as csvfilew1: fields = (range(0, 300)) csvwriter1 = csv.DictWriter(csvfilew1, fieldnames=fields) csvwriter1.writeheader() for i, row in enumerate(csv_reader1): print(f"value_i({i}) label({row['label']})") for j, line in enumerate(csv_reader2): if j <= i: matrixrows[j] = [] if row['label'] != line['label']: print(f"value_j({j})Unequal label({line['label']})") else: print(f"value_j({j}) equal label({line['label']})") pass else: break csv_file2.seek(0) Here is some of the out_put samples value_i(0) label(BW) value_j(0) equal label(BW) value_i(1) label(BW) value_j(0) Unequal label(label) value_j(1) equal label(BW) value_i(2) label(BW) value_j(0) Unequal label(label) value_j(1) equal label(BW) value_j(2) equal label(BW) You can see for j=0 while i goes from 1 to n it is not able to acess line['label'] value. Kindly help what is wrong with this?

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Re: Function to avoid a global variable
by ast May 2, 2020

May 2, 2020

Le 28/04/2020 à 09:13, Chris Angelico a écrit : > On Tue, Apr 28, 2020 at 4:56 PM ast <ast@invalid> wrote: >> >> Le 27/04/2020 à 04:46, Bob van der Poel a écrit : > > "Best"? Not sure about that. Functions are first-class objects in > Python, so a function *is* a callable object. You don't have to create > a custom class with a call method just to be able to attach attributes > to your function. > > ChrisA > Using a mutable object as a function default parameter value and changing it inside the function looks like a "trick" according to me.

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Re: Techniques to extend code without modifying it? (besides modules and decorators)
by Christian Seberino May 1, 2020

May 1, 2020

Paul Thanks! I'm glad there is theory about my concern. I knew I wasn't the only one with that question. cs > > https://en.wikipedia.org/wiki/Open%E2%80%93closed_principle > > Also: > > https://en.wikipedia.org/wiki/Expression_problem

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SSL Certificate Verify Failed (_ssl.c:600) using Windows Server 2019
by separated May 1, 2020

May 1, 2020

hello python-list and the subsribers, I just bought a rdp from someone and try to install python in order to running youtube-dl but when I just run a simple youtube-dl command like 'youtube-dl [youtube video url]' it got me this message : ERROR: Unable to download webpage: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:600)> (caused by URLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:600)'),)) Im operating system is windows server 2019, I have tried running youtube-dl from windows server 2016 but it works fine without any settings necessary. I hope I can get the answer here because my billing keeps running out of time. best regards, separated

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