python如何解析json字符串

import json
# 字典类型转换为json字符串
data = {"id": 1, 'name': 'sy', 'passwrd': '123123'}

print(type(data))
json_str = json.dumps(data)
print(type(json_str))
print(json_str)

print("*" * 20)

# json字符串转换为字典类型
json_str2 = '{"programers":[ {"firstName":"Breet","lastName":"MMM","email":"XXX"},'\
            '{"firstName":"Breet","lastName":"MMM","email":"XXX"}], ' \
            '"author": [{"firstName": "su", "lastName": "yang", "email": "XXX"},'\
            '{"firstName": "Breet", "lastName": "MMM", "email": "XXX"}]}'

print(type(json_str2))

data2 = json.loads(json_str2)

print(type(data2))
print(json_str2)
print(data2)

print('*' * 20)

# 将json数据写入文件，用文件传送

with open('aaa.json', 'w') as f:
    json.dump(data, f)

with open('aaa.json', 'r') as f:
    data3 = json.load(f)
    print(type(data3))
    print(data3)