Gonna try and put this into words.

I am pretty familiar with bash and python. used both quite a bit and feel more or less comfortable with them.

My issue is I often do a thing where if I want to accomplish a task that is maybe a bit complex, I feel like I have to wind up making a script, let's call it hello_word.sh but then I also make a script called .hello_world.py

and basically what I do is almost the first line of the bash script, I call the python script like ./hello_world.py $@ and take advtange of the argparse library in python to determine what the user wants to do amongst other tasks that are easier to do in python like for loops and etc.

I try to do the meat of the logic in the python scripts before I write to an .env file from it and then in the bash script, I will do

set -o allexport
source "${DIR}"/"${ENV_FILE}"
set +o allexport

and then use the variable from that env file to do the rest of the logic in bash.

why do I do anything in bash?

cause I very much prefer being able to see a terminal command being executed in real-time and see what it does and be able to Ctrl+c if I see the command go awry.

in python, you can run a command with subprocess or other similar system libraries but you can't get the output in real-time or terminate a command preemptively and I really hate that. you have to wait for the command to end to see what happened.

But I feel like there is something obvious I am missing (like maybe bash has an argparse library I don't know about and there is some way to inject the concept of types into it) or if there is another language entirely that fits my needs?

In the everlasting quest to customize my laptop and make my life easier, I'm looking for any ideas for startup scripts to run on user login.
Personally, I don't know how to write bash scripts yet and unfortunately I won't have time to pick it up on the side in the near future seeing as how I'm swamped between my studies and work—nevertheless, it's always nice to see how others might have under the hood for future tinkering :)
I'm currently running i3-gaps on Arch Linux. I have a few programs that I like to run inside i3's config file (Polybar, firefox, file manager, Thunderbird) every time I start i3.
The problem that I seem to have is that I lack imagination. I don't know the potential of what else I could be doing with startup scripts, so I'm turning to Tildes to see what you guys might have.

Disclaimer: Don't run scripts offered to you by randos unless you trust them or review it yourself

I use this constantly, it just plays music by file name, specifically matching *NAME* with case-insensitivity. Requires bash 4.something.

# play -ln SONGS ...
# -l don't shuffle
# -n dry run
mpv_args="--no-audio-display --no-resume-playback \
          --msg-level=all=status --term-osd-bar"
shopt -s globstar nullglob nocaseglob

shuffle=true
dry=false
while [[ "$1" == -* ]]; do
    if [[ "$1" == "-l" ]]; then 
        shuffle=false
    elif [[ "$1" == "-n" ]]; then
        dry=true
    fi

    shift 1
done

if [[ "$shuffle" == true ]]; then
    mpv_args="--shuffle $mpv_args"
fi

songs=()
while [[ "$#" != 0 ]]; do
    songs+=( ~/music/**/**/*"$1"*.* ) # change this to match your music directory layout
    shift 1                                               # could probably use find instead
done

if [[ "$dry" == true ]]; then
    if [[ "$shuffle" == true ]]; then
        printf "Shuffle mode is on\n"
    fi

    for song in "${songs[@]}"; do
        printf "$song\n"
    done
  
    exit
fi

if [[ ${#songs[@]} != 0 ]]; then
    mpv $mpv_args "${songs[@]}"
fi

I make no claims to the quality of this but it works!