epd | Waveshare e-paper display

I have a data as below

I have installed PySpark 3.1.2 along with OpenJDK-1.8 to connect with a docker instance of Cassandra 4.0.1. I followed the instructions as in https://towardsdatascience.com/installing-pyspark-with-java-8-on-ubuntu-18-04-6a9dea915b5b and successfully installed the required versions.

I'm using anaconda environment, after installation I noticed that my Python version got automatically downgraded to 3.5 which is not supported by Pyspark(even in all environments where I had different python versions earlier, it's now 3.5). I read that Pyspark needs python3.6+. I tried everything possible to upgrade the python version to 3.6+ but it's not happening. When I try conda upgrade python some upgrades and removals happen but python is still 3.5.

conda update python gives:

I need to convert a json file to a dataframe however that json file have columns where there are nested data. I was able to successfully convert columns having one layer of nest using pd.json_normalize(data=df['column'])

I am trying to get these OrderedDicts within "epd:amount" into a pandas Dataframe with 3 columns: '@xmlns:epd'; '@epd:module' ; '#text'. I tried now for some time. Has anyone a good guess?

I currently have an IoT gadget that has different Display subclasses depending on what hardware I am compiling for. There is a base class called Display and have various subclasses like D_oled32 and D_oled64. At compile time I set a build flag via #define so that when I instantiate the the Display object it will pick the specified subclass. The way I have it now does work but VSCode is confused by it and I don't know if there is a more elegant way of doing it. Currently I do this :

my last question was deleted. yet people responded, thank you, and I followed their advices. I took the time to do it because of the holidays and the Covid. I still have one problem that I would like to outline.

with the QRCodeLib.xlam library, I create an impeccable qr-code ... unfortunately, I cannot call it from Access. see access code below :

This is the code of one of the TCP servers (it's also an UDP client but that should not matter) and we call it FS

My application updates an e-paper screen with various "plugin" objects. Each object represents one module with its own worker that creates the image. The image is displayed for a time, then switched to the next in the queue. Each object has its own timer that depends on data that its associated worker produces. This timer can change in response to various external inputs (e.g. user starts music playing, weather alert occurs).

The workers are queued and updated in one go, then the updates are made to the screen when needed.

I currently use sleep(1) at the end of the update/display loop to avoid busy waiting while nothing is happening. Is there a better strategy to improve the resources consumed by this? Experimentally, I've discovered that by increasing the sleep() value the CPU load of this process drops down a bit (as monitored with top).

Question: Is there a more resource efficient way to set up the display loop (see below)?

I've read up on threading and using join, but those don't seem appropriate here because the wait period is known and the code isn't waiting for some external resource to become available. It's simply waiting for a timer to expire.

Here's a sample of the display loop:

My code tries to get only the article text from each URLs, however it fails to get every p in the article for every URL. What makes it fails to crawl them?