🌐 Mailman 3 November 2022 - Tutor - python.org

AuckPUG's last (virtual) Coding Evening for 2022
by dn Nov. 30, 2022

Nov. 30, 2022

Wednesday 7 December, 1800 for 1830 NZDT/0530 UTC We will continue the "Crafting Software" series, gradually developing Monty's Python Supermarket. The evening's aim is to move the product-prices from their hard-coded dict[ionary] into a flat-file (introducing Python I/O), and then to do same with the Accountant's favorite tool - a Workbook or Spreadsheet (Python's library to interact with LibreOffice-Calc and MS-Excel). You can treat it as a code-along-at-home exercise or just watch the fun. The Web-conference URL and a QuickStart Guide (for those who didn't attend last time) will be provided upon RSVP. All welcome! https://www.meetup.com/nzpug-auckland/events/hgxmwsydcqbkb/ The Smart Iterators Challenge has finished (after five Challenge-weeks). Congratulations to all who participated (and if you didn't have time to complete, you're welcome to continue at your own pace). Particular pride for those who hung-in-there right to the end, making astute discoveries and learning ideas which have already been adopted into professional-practice. Well done! A "Retrospective, Review, and Reflection Wrap-up" document is available to participants/upon request. Advice and assistance will continue to be available - please email off-list. -- Regards, =dn

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PYTHON installation problem
by Edgar Byaruhanga Nov. 28, 2022

Nov. 28, 2022

Dear all, I am new to python and programming in general – so please kindly do not assume I know what you know and proceed to use acronyms, technical terms or slang terms which are common place in your field of expertise, as if I will know what they mean and or how to action them! (No offence intended) I have attached screenshots of messages which I keep getting when I try to download python on my laptop – (windows 10, intel 5, 64-bit cpu, chrome browser) Please advise what the problem is and how I can fix it – in order to download the program and start learning. I did previously install python 3.9 a long time ago – but didn’t have time to fully start using it. When I click the desktop icon for python 3.9 I get a message saying; * ‘’the item ‘pythonw.exe’ that this short cut refers to has been changed or moved, so this shortcut will no longer work properly’’ – Do you want to delete this shortcut? I tried to find python 3.9 in my system but couldn’t – not sure why or what happened to it, since I don’t remember uninstalling it! Please advise what the likely problem is and how I can fix it. 1. Also as a separate but slightly related issue – can I technically download python onto a usb stick/drive, then then install it onto a laptop which isn’t connected to the internet? I want a wall/vacuum between what I program and the internet! 2. I am not if this is relevant or within your remit but – I was looking into what I believe are called ‘’text editors’’, to help arrange and help me structure my programming in a way which is helpful to understand, remember and read – are there any specific text editors which you recommend to use with python? – AND DO THEY ACTUALLY HELP WHEN PROGRAMMING? I saw programs like, sublime, Atom, Visual studio, Vin, etc. (see link below) 3. https://www.techradar.com/best/best-text-editors Please advise Edgar Get Outlook for Android<https://aka.ms/AAb9ysg>

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Wed 16 Nov, Virtual PUG meeting
by dn Nov. 13, 2022

Nov. 13, 2022

Wed 16 November, 1800 for 1830 NZDT (0500 for 0530 UTC) 1 The When of Python Looking at a range of Python features with the aim of determining when or when not to use them in your Python code. Grant and Ben will be following up on their eponymous Kiwi Pycon talk - guidance on when to use Python's various features (and when not to). See https://www.youtube.com/watch?v=JnY5MEiqG44&ab_channel=KiwiPyCon) 2 SOLID's Open-Closed Principle Continuing our Software Craftsmanship series. Do you understand the Open-Closed Principle? Did you know that the OCP strongly influences software architecture and how we should design our programs? Something for Tutors and Python Apprentices. All welcome! For BigBlueButton web-conference URL, please RSVP at https://www.meetup.com/nzpug-auckland/events/njdjssydcpbvb/ (other enquiries to the under-signed, off-list please) -- Regards, =dn

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How to change the values in python code?
by samira khoda Nov. 10, 2022

Nov. 10, 2022

Hi Could you please help me to understand why the code below does not work? I am trying to read a txt.file line by line that has integer timestamp values, the last number should be compared to the previous number. And then split it where the value of the last is less than previous. But when I run the code prints 0 for previous in each line which technically says should not be split anywhere. I did a manual check up and I know there are various spots that the split should happen. How can I make the value of the previous update to the value of the previous timestamp and not stay zero for every line? Thanks in advance Sam Import pandas as pd previous=0 i=0 data=open('time-.txt', mode="r") for line in data: x=line.split(", ") last=int(x[7]) if last < previous : print("split here"+i) previous=last i=i+1 #end the loop

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help with program
by Enid Villalobos Nov. 7, 2022

Nov. 7, 2022

I need to create a reverse program using the reverseArray function my program works and runs as it should but they want me to define the reverseArray function I am copying my program below #The original array original_array = [9, 8, 7, 6, 5] print("original contents of array:",original_array) original_array.reverse() #reversing using reverse() print("Reversed contents of array:",original_array) when i run this program my output is this: original contents of array [9,8,7,6,5] reverse contents of array [5,6,7,8,9] But they want me to use the array function please help

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Challenge-week 4: Groups of solutions, starts today!
by dn Nov. 3, 2022

Nov. 3, 2022

A virtual event run by the Auckland Branch of the New Zealand Python Users' Group. Details from the Meetup site: https://www.meetup.com/nzpug-auckland/events/289531194/ where you may also sign-up. It's Week 4 of the Smart Iterator Challenge! We've looked at taking our early results and generalising them to suit various solutions. The next view is how a range of similar solutions might be grouped - and re-shaped to enable us to re-use and share code. We commence with a review of Challenge-week 3 and sample-code to download and compare with your own efforts. This time there is no tutorial-content. Even the provided testing/proofs are rather sparse - and really only there to make sure you're on-the-right-track. In many ways, the challenge is not so much writing code, as it is designing code-solutions. Putting code-modules together, and then pulling them apart to satisfy groups of solutions. Ooh mysterious! This Challenge will interest Python-Journeymen, and Python-Apprentices ready to move-on from ‘the basics’. As usual, there are "Extra Credit" challenges which will 'push' Python-Masters and advanced Journeymen. It's not a requirement that you have completed the previous challenges - but they will help. Challenge-week 4 starts with either your own or a provided template-script. So, you don't have to have completed Challenge-weeks 1, 2, and 3 (but it would help - there's nothing to stop you from 'catching up' and gaining full benefit from the exercise). There's some 'template code' which will enable starting from this week. Challenge Schedule: Groups of solutions Starting: Sat 5 Nov Office Hours: 1830*, Wed 9 Nov Concluding: midnight after Sun 13 Nov * all times NZDT (UTC+13) Are you up for a challenge? Regards =dn (for Pete and DJ)

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syntax parsing and ast
by Nathan Smith Nov. 3, 2022

Nov. 3, 2022

Hi guys, I'm hoping someone can give me direction here (this is not to do with my main project which I mentioned a little while ago and turned out to be unrelated to what I suspected) typical. This time I want to parse code of another language into python. It's not a mainstream language and is relatively simple in that in that it has only a couple of rules: 1. Everything can be a considered a function. 2. There is a small number of builtins (about 50 in total). 3. It uses spaces to separate arguments, unless a space is needed in which case the argument is inclosed in brackets like so: {arg with spaces} {arg 2 with spaces} I want to pass this into some objects that would allow a tree like so: main main.func1 main.func2 main2: main.if main.func4 I was thinking ast maybe be the way to go about this, and perhaps rejex for syntax matching, but beyond that I may need some pointers. thanks in advance for anything you can offer in the way of help. -- Best Wishes, Nathan Smith, BSC My Website: https://nathantech.net

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Tkinter isn't working on Beagle Bone Black
by Matt Lyon Nov. 2, 2022

Nov. 2, 2022

Hello, I'm having trouble running tkinter on my beagle bone black. I'm using the BBB through debian. I'm using python3 and pip3 for commands. ssh debian(a)beaglebone.local. I downloaded Tkinter with this command pip3 install tk Here's the list of libraries on my beaglebone. *debian@beaglebone*:*~*$ pip3 list Package Version -------------------------------- ------- Adafruit-BBIO 1.2.0 Adafruit-Blinka 8.5.0 adafruit-circuitpython-busdevice 5.2.3 adafruit-circuitpython-requests 1.12.8 adafruit-circuitpython-typing 1.8.2 Adafruit-PlatformDetect 3.31.0 Adafruit-PureIO 1.1.9 Click 7.0 colorama 0.3.7 cycler 0.11.0 decorator 4.3.0 distro 1.3.0 Flask 1.0.2 fonttools 4.38.0 itsdangerous 0.24 Jinja2 2.10 kiwisolver 1.4.4 MarkupSafe 1.1.0 matplotlib 3.5.3 numpy 1.21.6 packaging 21.3 pandas 1.3.5 Pillow 9.3.0 pip 18.1 pyctrl 0.4.3 pyftdi 0.54.0 pyparsing 3.0.9 pyserial 3.5 python-dateutil 2.8.2 pytz 2022.5 pyusb 1.2.1 rcpy 0.5.1 scipy 1.1.0 setuptools 40.8.0 six 1.16.0 tk 0.1.0 typing-extensions 4.4.0 Werkzeug 0.14.1 wheel 0.32.3 I'm not sure if I need to download another package or if I need to set up some link between my BBB and PC.Whenever I try to run a program with tkinter I get: ModuleNotFoundError: No module named 'tkinter' I appreciate any help you can give me. Thanks Matt Lyon lyonmatt13(a)gmail.com

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