import coco_types

with open("path/to/json", encoding="utf-8") as data_file:
    dataset = coco_types.Dataset.parse_raw(data_file.read())

import coco_types

with open("path/to/json", encoding="utf-8") as data_file:
    dataset = coco_types.DatasetKP.parse_raw(data_file.read())

import coco_types

with open("path/to/json", encoding="utf-8") as data_file:
    dataset = coco_types.Dataset.parse_raw(data_file.read())

img = dataset.images[0]
print(f"Image's filename {img.file_name}")
print(f"Image's id {img.id}")
print(f"Image's height {img.height}")
print(f"Image's width {img.width}")

img_annotations = [annotation for annotation in dataset.annotations
                   if annotation.image_id == img.id]
ann = img_annotations[0]
print(f"Annotation's id: {ann.id}")
print(f"Annotation's image id: {ann.image_id}")
print(f"Annotation's category id: {ann.category_id}")
print(f"Annotation's iscrowd: {ann.iscrowd}")
print(f"Annotation's bbox: {ann.bbox}")
print(f"Annotation's area {ann.area}")

for cat in dataset.categories:
    if cat.id == ann.category_id:
        break

print(f"Category's name {cat.name}")
print(f"Category's supercategory {cat.supercategory}")