import json


def print_keys(d, prefix=""):
    if isinstance(d, dict):
        for k, v in d.items():
            print(prefix + k)
            print_keys(v, prefix + k + ".")
    elif isinstance(d, list):
        if len(d) > 0:
            print_keys(d[0], prefix + "[0].")

with open("1QmZBRns8OY4RjfkNiH2YT_analysis.json") as f:
    data = json.load(f)

print_keys(data)