How to gather specific second-level items from a list

[chatguy]

Hi All,

I'm trying to create a combined list of itemNames under "run", within each of the headers, if anyone can help please.

Example List (from a JSON file I've read in):

{

"Header1":{
"skip":[
],
"run":[
"itemName1"
"itemName2"
]
},

"HdrNumber2":{
"skip":[
],
"run":[
"itemName3"
"itemName4"
"itemName5"
"itemName6"
]
}

}

...so that the result should be this list:

{'itemName1', 'itemName2', 'itemName3', 'itemName4', 'itemName5', 'itemName6'}

Thank you in advance! (I feel like this should be simple, but have been banging my head much of today trying to figure out how create that list!)
CG

[nealc]

I added commas after the itemnamex and saved in a file ex.json.

from json import load

if __name__ == '__main__':
    with open("ex.json") as f: data = load(f)

    sum([d['run'] for d in data.values()], [])

[chatguy]

I added commas after the itemnamex and saved in a file ex.json.

from json import load

if __name__ == '__main__':
    with open("ex.json") as f: data = load(f)

    sum([d['run'] for d in data.values()], [])

You are awesome--Thank you so much, Neal!! This worked perfectly...and very elegantly done with the magic on one line too!

Thanks again!
CG