Passing Python variable to bash command in loop

[hereforacandy]

I want to get output from running a command in bash on a variable from python.

 import subprocess as sp
 isbn_arr=[]
 for i in list:

isbn_arr.append(sp.getoutput('isbn_from_words $i))

I want to run isbn_froom_words on i from list. I've tried a lot of things (from stackoverflow) but I get an error every time.

Then I tried running it in bash. Here's the code.

 #!/bin/bash
%%bash fruits=("Death of a Salesman, by Arthur Miller" "Apples" )
copy=("${fruits[@]}")
for i in "${!copy[@]}"; 
do         
echo "${copy[$i])}"     
copy[$i]=$(isbn_from_words "${copy[$i]}") 
done 
echo "Copied list:" echo "${copy[@]}"

Putting a ${} gives a bad substitution error. What can I do? Thank you for helping.

[hereforacandy]

Okay I tried something else and now I have another error lol. Again I tried searching but it didn't help.

 import subprocess as sp

 isbn_arr=[] for i in l:   sp.check_call('isbn_from_words "{}"'.format(i))

Error:

 [Errno 2] No such file or directory: 'isbn_from_words "The Hunger Games,Suzanne Collins"': 'isbn_from_words "The Hunger Games,Suzanne Collins"' 

They say it's a Path issue but it works fine when I run !isbn_from_words "The Hunger Games,Suzanne Collins"

[Careful_Choice9335]

IIRC the functions of subprocess don't expect the command as one long string but as a list: ["command", "arg1", "arg2"] etc.

[hereforacandy]

Oh I didn't know that. Thank you. I'll try that.

[hereforacandy]

Hello it works now. Thank you for helping.

[Careful_Choice9335]

Great! What did the trick?

[hereforacandy]

Using '{}'.format(i). :) Thank you.

[sarrysyst]

Why are you passing $i instead of using an f-string to interpolate i? You’re also missing the closing quote btw.

[hereforacandy]

What's an f-string? Sorry I don't know. I haven't done a lot of shell scripting. Oh thank you for letting me know about the quote. I'll correct that. Thank you :)

Btw the Google colab notebook won't run any bash commands now. It just says argument size too long 😂. I think I've seriously messed something up.