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
– Barmar, Commented Oct 1, 2020 at 15:00

Paul Hodges · Accepted Answer · 2020-10-01 14:59:36Z

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 1, 2020 at 14:59

Paul Hodges

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3 Comments

The important thing is that you've quoted the command substitution.

Which retains all the whitespace &c, but should not be confused by similar quotes embedded in the data.

Or --config "$(jq -c . test.json)"