bash convert json to string and pass as argument to python script

Question

Hello how can I read a json from filesystem with bash and pass the string as an argument to a python script? I tried this. But it does not work

config=`cat test.json | tr '\n' ' '`
python3 script.py\
    --config $config  \

Just quote the variable, which you should always do unless you have a good reason not to. — Barmar, Oct 01 '20 at 15:00
See https://stackoverflow.com/questions/29378566/i-just-assigned-a-variable-but-echo-variable-shows-something-else — Barmar, Oct 01 '20 at 15:04

score 2 · Accepted Answer · answered Oct 01 '20 at 14:59

2

Why eliminate the newlines?

python3 script.py --config "$(<test.json)"

Or if you really need them gone,

python3 script.py --config "$( tr "\n" ' ' < test.json)"

answered Oct 01 '20 at 14:59

Paul Hodges

1

The important thing is that you've quoted the command substitution. – Barmar Oct 01 '20 at 15:01
Which retains all the whitespace &c, but should not be confused by similar quotes embedded in the data. – Paul Hodges Oct 01 '20 at 15:02
2

Or `--config "$(jq -c . test.json)"` – Benjamin W. Oct 01 '20 at 15:30

1 Answers1