In which language is the Django framework developed?

Django is a web application framework developed in Python language, and its programming language is Python. The core idea of ​​this framework is DRY (Don't Repeat Yourself), which means avoiding repeated code. Django applies many excellent software engineering practices, such as model template separation, ORM (Object Relational Mapping) and routing configuration.

The following is a simple Django project example to show its Python code:

# 导入必要的库和模块
from django.shortcuts import render
from django.http import HttpResponse

# 定义视图函数
def index(request):
    # 定义一个模板上下文变量
    context = {}
    # 使用render函数渲染一个模板，并返回给客户端
    return render(request, 'index.html', context)

# 定义一个简单的接口
def api(request):
    # 定义一个字典，用于返回json数据
    data = {'message': 'Hello, World!'}
    # 将字典转换为json格式，并返回给客户端
    return HttpResponse(json.dumps(data), content_type='application/json')

In the above code example, two view functions index and api, where the index function returns a rendered template, and the api function returns a json format data. We can use Django's routing configuration to route these two functions, for example:

# 导入必要的库和模块
from django.urls import path
from . import views

# 定义路由
urlpatterns = [
    path('', views.index, name='index'),
    path('api/', views.api, name='api'),
]

The above routing configuration defines two routes corresponding to the index and api functions respectively. Used to handle client requests. When the client requests http://localhost/, Django will automatically call the index function and return its result; when the client requests http://localhost/api /, the api function will be automatically called and its result will be returned.

In short, Django is a framework developed in Python language that can easily provide a complete solution for rapid development and deployment of web applications.

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