Why does Django need a request when it outputs Hello world?

Why do we use the lamp environment, access to the PHP page need to return to Hello world, directly in the file to write Echo ' Hello World ', and Django needs

from django.http import HttpResponsedef index(request):    return HttpResponse('Hello World')~                                         

How about this?

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Why do we use the lamp environment, access to the PHP page need to return to Hello world, directly in the file to write Echo ' Hello World ', and Django needs

from django.http import HttpResponsedef index(request):    return HttpResponse('Hello World')~                                         

How about this?

Just encapsulation of the HTTP protocol.
PHP also has a similar library, just because PHP is not a strict object-oriented language, of course, it also supports object-oriented programming.
The advantage of this writing is that it has all the benefits of object-oriented. More readable.

Response('hello!world')->withHeader(['Content-type:text/html;charset=utf8;']);//PHP也可以以这样的方式编程.//当然你也可以这样header('Content-type:text/html;charset=utf8;');echo 'hello!world';

So it's just a way of programming, without having to tangle.

