adding class reader example

[jposada202020]

Adding an example to show how to read csv files from the disk.
had to hack a little the results as I was having some trouble with the regex.

Thanks :)

[tekktrik]

I think I need to update the CI before running the tests, so if you don't mind I'll do those changes and merge them into your PR on your behalf if that's okay.

[jposada202020]

No problem at all :) . Cheers

[tekktrik]

Looks like you need to specify an encoding argument when using open(). Setting it to utf-8 should resolve the issue.

[jposada202020]

I modified the open,

with open(weather_file,  "r", encoding="utf-8") as csvfile:
    row = csv.reader(csvfile)
    for item in row:
        raw_data.append(item[11])
print(raw_data[0:41])

and I get this. The header and the data does not seem to match.

Adafruit CircuitPython 8.0.0 on 2023-02-06; Adafruit PyPortal Titano with samd51j20
>>> import csr
Setting up SD Card
Reading the csv file contents. This could take some time
['Min Temp (°C)', '","19.6', '","21.2', '","25.6', '","27.7', '","31.5', '","32.6', '","28.9', '","28.0', '","22.5', '","20.6', '","17.6', '","22.0', '","31.3', '","22.1', '","19.7', '","20.7', '","20.0', '","23.4', '","26.9', '","30.4', '","24.2', '","24.5', '","27.2', '","25.6', '","28.9', '","33.9', '","28.9', '","36.9', '","40.6', '","41.3', '","39.7', '","39.0', '","37.1', '","41.3', '","30.8', '","33.0', '","28.9', '","25.0', '","24.6', '","19.4']
Done reading
Now we will display the data

[tekktrik]

Did you have the issue before adding the encoding? I'm not surprised the quotes are messing it up, I guess it's still an issue for the library.

[jposada202020]

Yes same issue, guessing is the regex, but I am not good enough at regex to be 100% sure.

[tekktrik]

Yeah, the regex is easy to anger. It's something I'd love to revisit, the quote character is very finicky. In the meantime, it may be worth finding a simpler example, since I do like the idea of documenting the feature!

[jposada202020]

Simple ... yes.. I think about something.... I did this for Fakerequests, but I would not consider this "simple" LOL
adafruit/Adafruit_CircuitPython_FakeRequests#4

Simplest thing will be to read something that is written.. but Ideas are welcome :)

Things that we have tought
List of colors -
List of values
Stock market - Discarded for Copyright issues
Slide show

Let me know :)