return vs raise

[m25...@gmail.com]

Dear friends:

I hope everyone on this group is fine and in a good health, following is a snippet from a code of training REST project i am working on:

def POST(self):

task = json.loads(web.data())

if not task or not task['title']:

raise web.HTTPError('400 Bad Resource!', data=json.dumps({

'error': 'Bad Resource!'

}))

else:

new_task = {

'title': task['title'],

'description': task.get('description', ''),

'done': False

}

db.insert('tasks', **new_task)

#web.created()

raise web.Created(data=json.dumps({

'task': new_task

}))

the question is regarding the behavior web types (HTTPError, Created) when using return vs raise.

when i use raise for example as in the red line i get the required result :

201 Created

Headers

Cache-Control: no-cache 

Content-Type: application/json 

Transfer-Encoding: chunked 

Date: Thu, 10 Dec 2020 12:43:09 GMT

Server: localhost

{ "task": { "title": "Learn Webpy", "description": "", "done": false } }  

but when i use return i get:

201 Created

Headers

Cache-Control: no-cache 

Content-Type: application/json 

Transfer-Encoding: chunked 

Date: Thu, 10 Dec 2020 12:43:09 GMT

Server: localhost

201 created   

i did not understand this behavior , same thing regarding the debate previously discussed on the group regarding return web.seeother vs raise web.seeother.

is this issue concerning webpy or else is it problem with my code, for give am just an amateur and for give me if my language is not clear.

Thank you very much