Parse json file using python-CodePudding

I have a .json file , the first few lines are :

{
    "global_id": "HICO_train2015_00000001",
    "hois": [
        {
            "connections": [
                [
                    0,
                    0
                ]
            ],
            "human_bboxes": [
                [
                    207,
                    32,
                    426,
                    299
                ]
            ],
            "id": "153",
            "invis": 0,
            "object_bboxes": [
                [
                    58,
                    97,
                    571,
                    404
                ]
            ]
        },

I want to print out human_bboxes. id and object_bboxes.

I tried this code:

    import json
     
    # Opening JSON file
    f = open('anno_list.json',)
     
    # returns JSON object as
    # a dictionary
    data = json.load(f)
     
    # Iterating through the json
    # list
    s=data[0]
    for i in s:
     print(i[1])
     
    # Closing file
    f.close()

But, it gave me this output:

l

o

m

m

CodePudding user response：

Do this:

import json
# Opening JSON file
f = open('anno_list.json',)

# returns JSON object as
# a dictionary
data = json.load(f)
     
# Iterating through the json
# list
s=data[0]

# Do This:
hois_data = s["hois"][0]
print("human_bboxes",hois_data["human_bboxes"])
print("id",hois_data["id"])
print("object_bboxes",hois_data["object_bboxes"])
   
# Closing file
f.close()

CodePudding user response：

The answer by Behdad Abdollahi Moghadam would print the answer correctly, but only for one set of bboxes and id. The below answer additionally has a for loop which parses the entire file and prints all the human and object bboxes and id into a file.

import json
 
# Opening JSON file
f = open('anno_list.json',)
 
# returns JSON object as
# a dictionary
data = json.load(f)
 
f1 = open("file1.txt", "w")
for annotation in data:
    f1.write("==============\n")
    f1.write(annotation["global_id"])
    for hois in annotation["hois"]:
        f1.write("\n")
        f1.write("---")
        f1.write("\n")
        f1.write(hois["id"])
        f1.write("\n")
        f1.write(str(hois["human_bboxes"]))
        f1.write("\n")
        f1.write(str(hois["object_bboxes"]))
        f1.write("\n")
 
# Closing file
f.close()
f1.close()