OpenAtlas

If multiple files are uploaded, they will have the same name with a number behind them.
What format is better for readability and working? Possibilities:

filename_0.jpg
filename_1.jpg
filename_2.jpg

or

filename_01.jpg
filename_02.jpg
filename_03.jpg

or

filename.jpg
filename_01.jpg
filename_02.jpg

or

filename.jpg
filename_02.jpg
filename_03.jpg
(This is my preference)

Please state your opinion or the last option will be implemented.

I like 01, 02, 03 ... more but be aware that it would be possible to upload more than 99. Not to say that we are writing 001, just be aware of that when writing the function.

Oh hell yes! In the code I was aware, but here I didn't though of it.

The numbers should be without trailing zeros, because of the reasons you wrote. So the options are:

filename_0.jpg
filename_1.jpg
filename_2.jpg

or

filename_1.jpg
filename_2.jpg
filename_3.jpg

or

filename.jpg
filename_1.jpg
filename_2.jpg

or

filename.jpg
filename_2.jpg
filename_3.jpg

I would say when it's only one than just the filename. Otherwise I still prefer filename_01, filename_02, ... you can do this with just adding a leading number in case its only one digit.

One way to do it would be using zfill() like we do in OpenAtlas in models/date.py (https://github.com/craws/OpenAtlas/blob/main/openatlas/models/date.py)
Here is also a link with an explanation and examples: https://www.askpython.com/python/string/python-string-zfill

Great! Merge it to develop. We can look at the manual together if you like.
You can close the ticket (once in develop) even with missing manual because that's more part of the release workflow than the ticket itself.