[SOLVED] how can I parse json with a single line python command?

how can I parse json with a single line python command?

I would like to use python to parse JSON in batch scripts, for example:

HOSTNAME=$(curl -s "$HOST" | python ?)

Where the JSON output from curl looks like:

'{"hostname":"test","domainname":"example.com"}'

How can I do this with a single line python command?

Solution

Based on the JSON below being returned from the curl command ...

'{"hostname":"test","domainname":"example.com"}'

You can then use python to extract the hostname using the python json module:

HOSTNAME=$(curl -s "$HOST" |
  python -c \
    'import json,sys;print(json.load(sys.stdin)["hostname"])')

Note that I have split the line using a \ to make it more readable on stackoverflow. I've also simplified the command based on chepner's comment.