如何从JSON - Python获取值

import json

json_str = '{"name": "John", "age": 30, "city": "New York"}'
data = json.loads(json_str)

name = data["name"]
age = data["age"]
city = data["city"]

print(name)  # 输出：John
print(age)   # 输出：30
print(city)  # 输出：New York

import json

with open('data.json') as json_file:
    data = json.load(json_file)

name = data["name"]
age = data["age"]
city = data["city"]

print(name)  # 输出：John
print(age)   # 输出：30
print(city)  # 输出：New York

import json

json_str = '{"name": "John", "age": 30, "address": {"city": "New York", "zipcode": "10001"}}'
data = json.loads(json_str)

name = data["name"]
age = data["age"]
city = data["address"]["city"]
zipcode = data["address"]["zipcode"]

print(name)    # 输出：John
print(age)     # 输出：30
print(city)    # 输出：New York
print(zipcode) # 输出：10001