嵌套的if语句、json、django

age = 25
if age < 18:
    print("未成年人")
else:
    if age < 60:
        print("成年人")
    else:
        print("老年人")

import json

data = {
    "name": "Alice",
    "age": 25,
    "city": "New York"
}

# 将Python对象转换为JSON字符串
json_str = json.dumps(data)
print(json_str)

# 将JSON字符串转换为Python对象
parsed_data = json.loads(json_str)
print(parsed.py_data)

# views.py
from django.http import HttpResponse
from django.shortcuts import render

def home(request):
    return HttpResponse("Hello, Django!")

# urls.py
from django.urls import path
from . import views

urlpatterns = [
    path('', views.home, name='home'),
]

import json

json_str = '{"name": "Alice", "age": 25}'

try:
    data = json.loads(json_str)
except json.JSONDecodeError as e:
    print(f"JSON解析错误: {e}")

# views.py
from django.http import HttpResponse

def home(request):
    return HttpResponse("Hello, Django!")

# urls.py
from django.urls import path
from . import views

urlpatterns = [
    path('', views.home, name='home'),
]