python - Removing JSON property in array of objects

Question

I have a JSON array that I'm cleaning up in Python. I want to remove the imageData property:

data.json

[{"title": "foo", "imageData": "xyz123"},
{"title": "bar", "imageData": "abc123"},
{"title": "baz", "imageData": "def456"}]

I am setting up a list comprehension to remove the property, but I'm not sure how to create the variable that focuses on imageData:

import json

with open('data.json') as json_data:
    data = json.load(json_data)
    clean_data = [ item for item in data if not item['imageData'] ]
    # Write `clean_data` to new json file

When I print the list comprehension, it returns an empty array. What do I have to correct to get this working properly?

Answer 1

An easy solution to your problem is deleting the unwanted key in place, with del:

import json

with open('data.json') as json_data:
    data = json.load(json_data)
    for element in data: 
        del element['imageData'] 

You should add some safety checks, but you get the idea.