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

Re: Online training June 11, 12: Docker packaging best practices for Python in production
by DL Neil May 22, 2020

May 22, 2020

On 23/05/20 3:40 AM, Itamar Turner-Trauring wrote: > You’re about to ship your Python application into production using Docker: your images are going to be critical infrastructure. ... > *The class will take place on two mornings (US East Coast) on June 11th and 12th. You can **learn more about the class on the event page* <https://www.eventbrite.com/e/production-ready-docker-packaging-for-python-d…>* (*https://bit.ly/36kBhhN). Requested/suggested improvements to this 'advert': 1 internationalisation/localisation Please include the exact times because for many of us, "morning" begins a lot sooner than is typical elsewhere, and "EST" is a local-definition. (preferably use/add international standards for expressing times/dates) 2 community/commercial Please mention any costs. This list is populated by volunteers. - if you are volunteering your time, I have almost-insulted you by asking (apologies) - if you are charging for attendance, I shouldn't have to 'click here' to ascertain such a basic fact/significant-factor for many. The topic is a good one; both pertinent and current for Pythonista. Wishing it goes well... -- Regards =dn

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Re: creating a csv from information I have printed to screen
by Ciarán Hudson May 22, 2020

May 22, 2020

This has helped a lot; cleaner output, keeping tbl format and creating a csv but the csv is not being populated. Any idea what I am doing wrong? import requests import csv, sys from bs4 import BeautifulSoup cookies = { 'ApplicationGatewayAffinity': '1d2ad8ab214d1293a4e31bcd161589fa82a54a39bb7b3be80b503996092d4296', 'ApplicationGatewayAffinityCORS': '1d2ad8ab214d1293a4e31bcd161589fa82a54a39bb7b3be80b503996092d4296', } headers = { 'Connection': 'keep-alive', 'Cache-Control': 'max-age=0', 'Upgrade-Insecure-Requests': '1', 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36', 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9', 'Sec-Fetch-Site': 'cross-site', 'Sec-Fetch-Mode': 'navigate', 'Sec-Fetch-User': '?1', 'Sec-Fetch-Dest': 'document', 'Referer': 'https://www.google.com/', 'Accept-Language': 'en-GB,en;q=0.9,en-US;q=0.8,fr;q=0.7,nl;q=0.6', } response = requests.get('https://www.corkairport.com/arrivals-departures', headers=headers, cookies=cookies) #print(response.content) soup = BeautifulSoup(response.content, 'html.parser') #print(soup.prettify()) ## commented out as it did not print as expected # headers = soup.find_all('th') # for header in headers: # for content in header.contents: # value = str(header).strip().replace('\n', '') # if len(value) == 0: # print('"0"', end=',') # elif value[0].lower() in 'abcdefghijklmnopqrstuvwxyz<': # print('\n' + value, end=',') # else: # print('"' + value + '"', end=',') #print('Arriving From', 'Airline', 'Scheduled to arrive','Latest Update','Status') writer = csv.writer(sys.stdout) writer.writerow([ 'Arriving From' 'Airline', 'Scheduled to arrive', 'Latest Update', 'Status' ]) #cells = soup.find_all('td') #print(cells) [table] = soup.find_all("table") for row in table.find_all("tr"): writer.writerow( [td.string.strip() for td in row.find_all("td")] ) # for cell in cells: # for content in cell.contents: # value = str(content).strip().replace('\n', '') # if len(value) == 0: # print('"0"', end=',') # elif value[0].lower() in 'abcdefghijklmnopqrstuvwxyz<': # print('\n' + value, end=',') # else: # print('"' + value + '"', end=',') with open('flight.csv','w') as f: writer = csv.writer(f)

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creating a csv from information I have printed to screen
by Ciarán Hudson May 22, 2020

May 22, 2020

How do I edit the code below to create a csv file which includes the information I have printed at the bottom? I'm pulling arrival data from an airport website and printing out only the flight info. I want to save that flight info to a CSV file. import requests from bs4 import BeautifulSoup cookies = { 'ApplicationGatewayAffinity': '1d2ad8ab214d1293a4e31bcd161589fa82a54a39bb7b3be80b503996092d4296', 'ApplicationGatewayAffinityCORS': '1d2ad8ab214d1293a4e31bcd161589fa82a54a39bb7b3be80b503996092d4296', } headers = { 'Connection': 'keep-alive', 'Cache-Control': 'max-age=0', 'Upgrade-Insecure-Requests': '1', 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36', 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9', 'Sec-Fetch-Site': 'cross-site', 'Sec-Fetch-Mode': 'navigate', 'Sec-Fetch-User': '?1', 'Sec-Fetch-Dest': 'document', 'Referer': 'https://www.google.com/', 'Accept-Language': 'en-GB,en;q=0.9,en-US;q=0.8,fr;q=0.7,nl;q=0.6', } response = requests.get('https://www.corkairport.com/arrivals-departures', headers=headers, cookies=cookies) #print(response.content) soup = BeautifulSoup(response.content, 'html.parser') #print(soup.prettify()) ## commented out as it did not print as expected # headers = soup.find_all('th') # for header in headers: # for content in header.contents: # value = str(header).strip().replace('\n', '') # if len(value) == 0: # print('"0"', end=',') # elif value[0].lower() in 'abcdefghijklmnopqrstuvwxyz<': # print('\n' + value, end=',') # else: # print('"' + value + '"', end=',') print('Arriving From', 'Airline', 'Scheduled to arrive','Latest Update','Status') cells = soup.find_all('td') #print(cells) for cell in cells: for content in cell.contents: value = str(content).strip().replace('\n', '') if len(value) == 0: print('"0"', end=',') elif value[0].lower() in 'abcdefghijklmnopqrstuvwxyz<': print('\n' + value, end=',') else: print('"' + value + '"', end=',')

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Installation Error
by Charles Seagraves May 22, 2020

May 22, 2020

Hi, I have been learning and using Python to create a program to play Mah Jongg and it was going well until my windows 10 computer started receiving an update. My computer restarted and Python was gone. I have attempted to reinstall with a message that the install was successful. When I started to use it I got the following message. pythonw.exe - System Error The code execution cannot proceed because python38.dll was not found. Reinstalling the program may fix this problem. I have reinstalled python several times. Repaired it several times but continue to get the same error. I uninstalled the bad Windows update but still had the same problem trying to get python running. Please help, Charlie Seagraves

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Display, EasyProcess
by Larry Martell May 21, 2020

May 21, 2020

I have some code that uses the pyvirtualdisplay package and it works fine. pyvirtualdisplay,Display calls EasyProcess like this: @classmethod def check_installed(cls): EasyProcess([PROGRAM, '-help'], url=URL, ubuntu_package=PACKAGE).check_installed() I made a branch and made some changes. In the branch, when I instantiate Display and it gets to this point it fails with: TypeError: __init__() got an unexpected keyword argument 'url' There are no changes in my branch related to using Display. What's very odd is that the __init__() function for EasyProcess has this signature, and the call to it from Display is the same in my master branch and it works: def __init__( self, cmd, cwd=None, use_temp_files=True, env=None, ): So that url param must be getting passed to something else. I did some googling and found a post on SO where someone was having the same issue, and the answer was that they overrode the EasyProcess __init__ with their own init. If I am doing that I have no clue how that could be. I did inspect EasyProcess just before the call and it was the correct code. Here is the end of the stack trace: -> display = Display(visible=0, size=(800, 600)) > /usr/local/lib/python3.7/site-packages/pyvirtualdisplay/display.py(33)__init__() -> self._obj = self.display_class( /usr/local/lib/python3.7/site-packages/pyvirtualdisplay/display.py(51)display_class() -> cls.check_installed() /usr/local/lib/python3.7/site-packages/pyvirtualdisplay/xvfb.py(38)check_installed() -> ubuntu_package=PACKAGE).check_installed() Anyone have any thoughts on what could be causing this or how I can debug it further?

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Getting value of a variable without changing the expression in Python
by ansari.aafaq1994＠gmail.com May 21, 2020

May 21, 2020

Lets say i have a expression: flowrate=(veloctiy*area) i can find the flowrate with this expression but if i dont wanna change the expression and want to find the velocity by giving it value of area and flowrate ,how do i do this in python? is there any library or package or module for this?

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pip UX studies: Test pip's new resolver and help us document dependency conflicts
by Bernard Tyers - Sane UX Design May 21, 2020

May 21, 2020

Hi there, It's Bernard and Nicole from the pip Team. The team is working on the improving the way that pip resolves package dependency conflicts. We're asking for your help to test pip's new resolver. We're especially interested in hearing from people who have projects with complex dependencies. By complex dependencies we mean projects that look like this: - have at least 10 package dependencies - some package are pinned to specific versions - that you always have a dependency issue when installing it - you have to put in hacks, workarounds, or fixes Currently, we’re trying to discover all the ways in which pip‘s dependency resolver fails, so that we can work out what error messages and/or debugging information we should display. You can find out what we'd like you to do on this blog post: http://www.ei8fdb.org/thoughts/2020/05/test-pips-alpha-resolver-and-help-us… If you're into social media, we'd appreciate if you'd boost these messages too: https://twitter.com/nlhkabu/status/1263132447971172352 https://social.ei8fdb.org/@bernard/104205537250874117 You can sign-up for other UX Studies also: http://www.ei8fdb.org/thoughts/2020/03/pip-ux-study-recruitment/ If you've got any questions, reply here off or on-list. Thanks, Bernard & Nicole pip Team UX -- Bernard Tyers, User research & Interaction Design Sane UX Design Twitter: @bernardtyers PGP Key: keybase.io/ei8fdb I am currently working with the Python Software Foundation, and Open Technology Fund

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Python not running
by Supriyo Roy May 20, 2020

May 20, 2020

I have installed the latest version of python which is 3.8.3. However, when I try to run a sample program, a small python icon appears on my taskbar for a split second and then disappears. Nothing else happens. Please advise me on how to get python up and running. Thank you in advance. Regards. -- Supriyo Roy

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Re: Can't run program
by DL Neil May 20, 2020

May 20, 2020

On 21/05/20 7:16 AM, Dennis Lee Bieber wrote: > On Tue, 19 May 2020 20:31:28 -0400, Ryan Harrington > <ryan.harrington(a)whitesourcesoftware.com> declaimed the following: > >> Hi - I'm not the least bit technical. Trying to learn through YouTube. I've >> gotten exit code 1, 2, 106. Tried setting up the project interpreter and >> can't figure it out. Tried uninstalling and reinstalling everything and >> still having problems. Any feedback appreciated. >> > > Information... We want... Information > > What OS? > > What installer package (and where did you obtain it)? Assuming MS-Windows: Please advise if the following reference is accurate, and works for you: https://docs.python.org/3/using/windows.html -- Regards =dn

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Fwd: Python not uninstalling
by Tushar Upadhyay May 20, 2020

May 20, 2020

---------- Forwarded message --------- From: Tushar Upadhyay <vinodupadhyay900(a)gmail.com> Date: Wed, 20 May 2020 at 22:57 Subject: Python not uninstalling To: <python-list(a)python.org> Sir I had uninstalled my python from control pannel but it shows again and again.I tried multiple times but it does not uninstalling Please help me asap.

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