Python flask-restful框架讲解

Flask-RESTful 是一个 Flask 扩展，它添加了快速构建 REST APIs 的支持。它当然也是一个能够跟你现有的ORM/库协同工作的轻量级的扩展。Flask-RESTful 鼓励以最小设置的最佳实践。如果你熟悉 Flask 的话，Flask-RESTful 应该很容易上手。
关于flask的使用，参考我的之前的博客：https://blog.csdn.net/shifengboy/article/details/114274271

flask-restful官方文档：https://flask-restful.readthedocs.io/en/lates
中文文档：http://www.pythondoc.com/Flask-RESTful/

flask-restful 安装

 pip install flask-restful

flask-restful使用

简单上手

 from flask import Flask
from flask_restful import Resource, Api
 
app = Flask(__name__)
api = Api(app)
 
class HelloWorld(Resource):
    def get(self):
        return {'hello': 'world'}
 
api.add_resource(HelloWorld, '/')
 
if __name__ == '__main__':
    app.run(debug=True)

运行结果：

 $ curl http://127.0.0.1:5000/
{"hello": "world"}

Resourceful 路由

Flask-RESTful 提供的主要构建块是资源。资源构建在 Flask 可插入视图之上，只需在资源上定义方法，就可以轻松访问多个 HTTP 方法。一个 todo 应用程序的基本 CRUD 资源是这样的:

 from flask import Flask, request
from flask_restful import Resource, Api
 
app = Flask(__name__)
api = Api(app)
 
todos = {}
 
class TodoSimple(Resource):
    def get(self, todo_id):
        return {todo_id: todos[todo_id]}
 
    def put(self, todo_id):
        todos[todo_id] = request.form['data']
        return {todo_id: todos[todo_id]}
 
api.add_resource(TodoSimple, '/<string:todo_id>')
 
if __name__ == '__main__':
    app.run(debug=True)

运行结果：

 chenshifengdeMacBook-Pro:~ chenshifeng$ curl http://localhost:5000/todo1 -d "data=Remember the milk" -X PUT
{
    "todo1": "Remember the milk"
}
chenshifengdeMacBook-Pro:~ chenshifeng$ curl http://localhost:5000/todo1
{
    "todo1": "Remember the milk"
}
chenshifengdeMacBook-Pro:~ chenshifeng$ curl http://localhost:5000/todo2 -d "data=Change my brakepads" -X PUT
{
    "todo2": "Change my brakepads"
}
chenshifengdeMacBook-Pro:~ chenshifeng$ curl http://localhost:5000/todo2
{
    "todo2": "Change my brakepads"
}
chenshifengdeMacBook-Pro:~ chenshifeng$

Restful 能够从 view 方法中理解多种返回值。类似于 Flask，你可以返回任何可迭代的并且它将被转换成一个响应，包括原始 Flask 响应对象。还支持使用多个返回值设置响应代码和响应头，如下所示:

 #!/usr/bin/python
# -*- coding: UTF-8 -*-
"""
@author:chenshifeng
@file:flask_restful_demo.py
@time:2021/03/05
"""
from flask import Flask, request
from flask_restful import Resource, Api
 
app = Flask(__name__)
api = Api(app)
 
class Todo1(Resource):
    def get(self):
        # Default to 200 OK
        return {'task': 'Hello world'}
 
class Todo2(Resource):
    def get(self):
        # Set the response code to 201
        return {'task': 'Hello world'}, 201
 
class Todo3(Resource):
    def get(self):
        # Set the response code to 201 and return custom headers
        return {'task': 'Hello world'}, 201, {'Etag': 'some-opaque-string'}
 
api.add_resource(Todo1,'/todo1')
api.add_resource(Todo2,'/todo2')
api.add_resource(Todo3,'/todo3')
 
if __name__ == '__main__':
    app.run(debug=True)

运行结果：

 chenshifengdeMacBook-Pro:~ chenshifeng$ curl -i  http://127.0.0.1:5000/todo1 
HTTP/1.0 200 OK
Content-Type: application/json
Content-Length: 30
Server: Werkzeug/1.0.1 Python/3.9.2
Date: Fri, 05 Mar 2021 16:08:28 GMT
 
{
    "task": "Hello world"
}
chenshifengdeMacBook-Pro:~ chenshifeng$ curl -i  http://127.0.0.1:5000/todo2
HTTP/1.0 201 CREATED
Content-Type: application/json
Content-Length: 30
Server: Werkzeug/1.0.1 Python/3.9.2
Date: Fri, 05 Mar 2021 16:08:32 GMT
 
{
    "task": "Hello world"
}
chenshifengdeMacBook-Pro:~ chenshifeng$ curl -i  http://127.0.0.1:5000/todo3
HTTP/1.0 201 CREATED
Content-Type: application/json
Content-Length: 30
Etag: some-opaque-string
Server: Werkzeug/1.0.1 Python/3.9.2
Date: Fri, 05 Mar 2021 16:08:34 GMT
 
{
    "task": "Hello world"
}
chenshifengdeMacBook-Pro:~ chenshifeng$

Endpoints 端点

很多时候，在一个 API 中，你的资源会有多个 url。可以将多个 url 传递给 Api 对象上的 add _ resource ()方法。每一个都将被路由到Resource

 api.add_resource(HelloWorld,
    '/',
    '/hello')

您还可以将路径的某些部分作为变量匹配到Resource。

 api.add_resource(Todo,
    '/todo/<int:todo_id>', endpoint='todo_ep')

演示代码：

 from flask import Flask
from flask_restful import Resource, Api
 
app = Flask(__name__)
api = Api(app)
 
 
class HelloWorld(Resource):
    def get(self):
        return {'hello': 'world'}
 
 
class Todo(Resource):
    def get(self, todo_id):
        # Default to 200 OK
        return {'task': 'Hello world'}
 
 
api.add_resource(HelloWorld, '/', '/hello')
api.add_resource(Todo, '/todo/<int:todo_id>', endpoint='todo_ep')
 
if __name__ == '__main__':
    app.run(debug=True)

演示结果：

 chenshifengdeMacBook-Pro:~ chenshifeng$ curl  http://127.0.0.1:5000/
{
    "hello": "world"
}
chenshifengdeMacBook-Pro:~ chenshifeng$ curl  http://127.0.0.1:5000/hello
{
    "hello": "world"
}
chenshifengdeMacBook-Pro:~ chenshifeng$ curl  http://127.0.0.1:5000/todo/1
{
    "task": "Hello world"
}
chenshifengdeMacBook-Pro:~ chenshifeng$ curl  http://127.0.0.1:5000/todo/2
{
    "task": "Hello world"
}

参数解析

虽然 Flask 可以方便地访问请求数据(即 querystring 或 POST 表单编码的数据) ，但验证表单数据仍然是一件痛苦的事情。使用类似于 argparse 的库对请求数据验证提供内置支持。

 from flask import Flask
from flask_restful import reqparse, Api, Resource
 
app = Flask(__name__)
api = Api(app)
 
parser = reqparse.RequestParser()
parser.add_argument('rate', type=int, help='Rate to charge for this resource')
 
class Todo(Resource):
    def post(self):
        args = parser.parse_args()
        print(args)
        # Default to 200 OK
        return {'task': 'Hello world'}
 
 
api.add_resource(Todo,'/todos' )
 
if __name__ == '__main__':
    app.run(debug=True)

 chenshifengdeMacBook-Pro:~ chenshifeng$ curl -d 'rate=100' http://127.0.0.1:5000/todos
{
    "task": "Hello world"
}
chenshifengdeMacBook-Pro:~ chenshifeng$ curl -d 'rate=foo' http://127.0.0.1:5000/todos
{
    "message": {
        "rate": "Rate to charge for this resource"
    }
}

与 argparse 模块不同，reqparse. RequestParser.parse _ args ()返回 Python 字典，而不是自定义数据结构。

输入模块提供了许多常用的转换函数，例如 inputs.date ()和 inputs.url ()。
使用 strict = True 调用 parse _ args 可以确保在请求包含您的解析器没有定义的参数时抛出错误。

 args = parser.parse_args(strict=True)

 $ curl -d 'rate2=foo' http://127.0.0.1:5000/todos
{
    "message": "Unknown arguments: rate2"
}

数据格式化

默认情况下，在你的返回迭代中所有字段将会原样呈现。尽管当你刚刚处理 Python 数据结构的时候，觉得这是一个伟大的工作，但是当实际处理它们的时候，会觉得十分沮丧和枯燥。为了解决这个问题，Flask-RESTful 提供了 fields 模块和 marshal_with() 装饰器。类似 Django ORM 和 WTForm，你可以使用 fields 模块来在你的响应中格式化结构。

 from flask import Flask
from flask_restful import fields, marshal_with, Resource, Api
 
app = Flask(__name__)
api = Api(app)
 
resource_fields = {
    'task':   fields.String,
    'uri':    fields.Url('todo')
}
 
class TodoDao(object):
    def __init__(self, todo_id, task):
        self.todo_id = todo_id
        self.task = task
 
        # This field will not be sent in the response
        self.status = 'active'
 
class Todo(Resource):
    @marshal_with(resource_fields)
    def get(self, **kwargs):
        return TodoDao(todo_id='my_todo', task='Remember the milk')
 
api.add_resource(Todo,'/todo')
 
if __name__ == '__main__':
    app.run(debug=True)

上面的例子接受一个 python 对象并准备将其序列化。marshal_with() 装饰器将会应用到由 resource_fields 描述的转换。从对象中提取的唯一字段是 task。fields.Url 域是一个特殊的域，它接受端点（endpoint）名称作为参数并且在响应中为该端点生成一个 URL。许多你需要的字段类型都已经包含在内。请参阅 fields 指南获取一个完整的列表。

 $ curl  http://127.0.0.1:5000/todo
{
    "task": "Remember the milk",
    "uri": "/todo"
}

完整例子

 from flask import Flask
from flask_restful import reqparse, abort, Api, Resource
 
app = Flask(__name__)
api = Api(app)
 
TODOS = {
    'todo1': {'task': 'build an API'},
    'todo2': {'task': '?????'},
    'todo3': {'task': 'profit!'},
}
 
 
def abort_if_todo_doesnt_exist(todo_id):
    if todo_id not in TODOS:
        abort(404, message="Todo {} doesn't exist".format(todo_id))
 
parser = reqparse.RequestParser()
parser.add_argument('task')
 
 
# Todo
# shows a single todo item and lets you delete a todo item
class Todo(Resource):
    def get(self, todo_id):
        abort_if_todo_doesnt_exist(todo_id)
        return TODOS[todo_id]
 
    def delete(self, todo_id):
        abort_if_todo_doesnt_exist(todo_id)
        del TODOS[todo_id]
        return '', 204
 
    def put(self, todo_id):
        args = parser.parse_args()
        task = {'task': args['task']}
        TODOS[todo_id] = task
        return task, 201
 
 
# TodoList
# shows a list of all todos, and lets you POST to add new tasks
class TodoList(Resource):
    def get(self):
        return TODOS
 
    def post(self):
        args = parser.parse_args()
        todo_id = int(max(TODOS.keys()).lstrip('todo')) + 1
        todo_id = 'todo%i' % todo_id
        TODOS[todo_id] = {'task': args['task']}
        return TODOS[todo_id], 201
 
##
## Actually setup the Api resource routing here
##
api.add_resource(TodoList, '/todos')
api.add_resource(Todo, '/todos/<todo_id>')
 
 
if __name__ == '__main__':
    app.run(debug=True)

获取列表

 $ curl http://localhost:5000/todos
{
    "todo1": {
        "task": "build an API"
    },
    "todo2": {
        "task": "?????"
    },
    "todo3": {
        "task": "profit!"
    }
}

获取一个单独的任务

 $ curl http://localhost:5000/todos/todo3
{
    "task": "profit!"
}

删除一个任务

 $ curl http://localhost:5000/todos/todo2 -X DELETE -v
*   Trying ::1...
* TCP_NODELAY set
* Connection failed
* connect to ::1 port 5000 failed: Connection refused
*   Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 5000 (#0)
> DELETE /todos/todo2 HTTP/1.1
> Host: localhost:5000
> User-Agent: curl/7.64.1
> Accept: */*
> 
* HTTP 1.0, assume close after body
< HTTP/1.0 204 NO CONTENT
< Content-Type: application/json
< Server: Werkzeug/1.0.1 Python/3.9.2
< Date: Sat, 06 Mar 2021 03:29:33 GMT
< 
* Closing connection 0

增加一个新的任务

 $ curl http://localhost:5000/todos -d "task=something new" -X POST -v
Note: Unnecessary use of -X or --request, POST is already inferred.
*   Trying ::1...
* TCP_NODELAY set
* Connection failed
* connect to ::1 port 5000 failed: Connection refused
*   Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 5000 (#0)
> POST /todos HTTP/1.1
> Host: localhost:5000
> User-Agent: curl/7.64.1
> Accept: */*
> Content-Length: 18
> Content-Type: application/x-www-form-urlencoded
> 
* upload completely sent off: 18 out of 18 bytes
* HTTP 1.0, assume close after body
< HTTP/1.0 201 CREATED
< Content-Type: application/json
< Content-Length: 32
< Server: Werkzeug/1.0.1 Python/3.9.2
< Date: Sat, 06 Mar 2021 03:31:02 GMT
< 
{
    "task": "something new"
}
* Closing connection 0

更新一个任务

 $  curl http://localhost:5000/todos/todo3 -d "task=something different" -X PUT -v
*   Trying ::1...
* TCP_NODELAY set
* Connection failed
* connect to ::1 port 5000 failed: Connection refused
*   Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 5000 (#0)
> PUT /todos/todo3 HTTP/1.1
> Host: localhost:5000
> User-Agent: curl/7.64.1
> Accept: */*
> Content-Length: 24
> Content-Type: application/x-www-form-urlencoded
> 
* upload completely sent off: 24 out of 24 bytes
* HTTP 1.0, assume close after body
< HTTP/1.0 201 CREATED
< Content-Type: application/json
< Content-Length: 38
< Server: Werkzeug/1.0.1 Python/3.9.2
< Date: Sat, 06 Mar 2021 03:32:44 GMT
< 
{
    "task": "something different"
}
* Closing connection 0

获取最新列表

 $ curl http://localhost:5000/todos
{
    "todo1": {
        "task": "build an API"
    },
    "todo3": {
        "task": "something different"
    },
    "todo4": {
        "task": "something new"
    }
}

posted @ 2021-03-06 11:38 尘世风阅读(10037) 评论(0) 编辑收藏举报

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Python flask-restful框架讲解

flask-restful 安装

flask-restful使用

Resourceful 路由

Endpoints 端点

参数解析

数据格式化

完整例子

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目录导航

	from flask import Flask
	from flask_restful import Resource, Api

	app = Flask(__name__)
	api = Api(app)

	class HelloWorld(Resource):
	def get(self):
	return {'hello': 'world'}

	api.add_resource(HelloWorld, '/')

	if __name__ == '__main__':
	app.run(debug=True)

	from flask import Flask, request
	from flask_restful import Resource, Api

	app = Flask(__name__)
	api = Api(app)

	todos = {}

	class TodoSimple(Resource):
	def get(self, todo_id):
	return {todo_id: todos[todo_id]}

	def put(self, todo_id):
	todos[todo_id] = request.form['data']
	return {todo_id: todos[todo_id]}

	api.add_resource(TodoSimple, '/<string:todo_id>')

	if __name__ == '__main__':
	app.run(debug=True)

	chenshifengdeMacBook-Pro:~ chenshifeng$ curl http://localhost:5000/todo1 -d "data=Remember the milk" -X PUT
	{
	"todo1": "Remember the milk"
	}
	chenshifengdeMacBook-Pro:~ chenshifeng$ curl http://localhost:5000/todo1
	{
	"todo1": "Remember the milk"
	}
	chenshifengdeMacBook-Pro:~ chenshifeng$ curl http://localhost:5000/todo2 -d "data=Change my brakepads" -X PUT
	{
	"todo2": "Change my brakepads"
	}
	chenshifengdeMacBook-Pro:~ chenshifeng$ curl http://localhost:5000/todo2
	{
	"todo2": "Change my brakepads"
	}
	chenshifengdeMacBook-Pro:~ chenshifeng$

	#!/usr/bin/python
	# -- coding: UTF-8 --
	"""
	@author:chenshifeng
	@file:flask_restful_demo.py
	@time:2021/03/05
	"""
	from flask import Flask, request
	from flask_restful import Resource, Api

	app = Flask(__name__)
	api = Api(app)

	class Todo1(Resource):
	def get(self):
	# Default to 200 OK
	return {'task': 'Hello world'}

	class Todo2(Resource):
	def get(self):
	# Set the response code to 201
	return {'task': 'Hello world'}, 201

	class Todo3(Resource):
	def get(self):
	# Set the response code to 201 and return custom headers
	return {'task': 'Hello world'}, 201, {'Etag': 'some-opaque-string'}

	api.add_resource(Todo1,'/todo1')
	api.add_resource(Todo2,'/todo2')
	api.add_resource(Todo3,'/todo3')

	if __name__ == '__main__':
	app.run(debug=True)

	chenshifengdeMacBook-Pro:~ chenshifeng$ curl -i http://127.0.0.1:5000/todo1
	HTTP/1.0 200 OK
	Content-Type: application/json
	Content-Length: 30
	Server: Werkzeug/1.0.1 Python/3.9.2
	Date: Fri, 05 Mar 2021 16:08:28 GMT

	{
	"task": "Hello world"
	}
	chenshifengdeMacBook-Pro:~ chenshifeng$ curl -i http://127.0.0.1:5000/todo2
	HTTP/1.0 201 CREATED
	Content-Type: application/json
	Content-Length: 30
	Server: Werkzeug/1.0.1 Python/3.9.2
	Date: Fri, 05 Mar 2021 16:08:32 GMT

	{
	"task": "Hello world"
	}
	chenshifengdeMacBook-Pro:~ chenshifeng$ curl -i http://127.0.0.1:5000/todo3
	HTTP/1.0 201 CREATED
	Content-Type: application/json
	Content-Length: 30
	Etag: some-opaque-string
	Server: Werkzeug/1.0.1 Python/3.9.2
	Date: Fri, 05 Mar 2021 16:08:34 GMT

	{
	"task": "Hello world"
	}
	chenshifengdeMacBook-Pro:~ chenshifeng$

	api.add_resource(Todo,
	'/todo/<int:todo_id>', endpoint='todo_ep')

	chenshifengdeMacBook-Pro:~ chenshifeng$ curl http://127.0.0.1:5000/
	{
	"hello": "world"
	}
	chenshifengdeMacBook-Pro:~ chenshifeng$ curl http://127.0.0.1:5000/hello
	{
	"hello": "world"
	}
	chenshifengdeMacBook-Pro:~ chenshifeng$ curl http://127.0.0.1:5000/todo/1
	{
	"task": "Hello world"
	}
	chenshifengdeMacBook-Pro:~ chenshifeng$ curl http://127.0.0.1:5000/todo/2
	{
	"task": "Hello world"
	}

	from flask import Flask
	from flask_restful import reqparse, Api, Resource

	app = Flask(__name__)
	api = Api(app)

	parser = reqparse.RequestParser()
	parser.add_argument('rate', type=int, help='Rate to charge for this resource')

	class Todo(Resource):
	def post(self):
	args = parser.parse_args()
	print(args)
	# Default to 200 OK
	return {'task': 'Hello world'}


	api.add_resource(Todo,'/todos' )

	if __name__ == '__main__':
	app.run(debug=True)

	$ curl -d 'rate2=foo' http://127.0.0.1:5000/todos
	{
	"message": "Unknown arguments: rate2"
	}

	from flask import Flask
	from flask_restful import fields, marshal_with, Resource, Api

	app = Flask(__name__)
	api = Api(app)

	resource_fields = {
	'task': fields.String,
	'uri': fields.Url('todo')
	}

	class TodoDao(object):
	def __init__(self, todo_id, task):
	self.todo_id = todo_id
	self.task = task

	# This field will not be sent in the response
	self.status = 'active'

	class Todo(Resource):
	@marshal_with(resource_fields)
	def get(self, **kwargs):
	return TodoDao(todo_id='my_todo', task='Remember the milk')

	api.add_resource(Todo,'/todo')

	if __name__ == '__main__':
	app.run(debug=True)

	$ curl http://127.0.0.1:5000/todo
	{
	"task": "Remember the milk",
	"uri": "/todo"
	}

	from flask import Flask
	from flask_restful import reqparse, abort, Api, Resource

	app = Flask(__name__)
	api = Api(app)

	TODOS = {
	'todo1': {'task': 'build an API'},
	'todo2': {'task': '?????'},
	'todo3': {'task': 'profit!'},
	}


	def abort_if_todo_doesnt_exist(todo_id):
	if todo_id not in TODOS:
	abort(404, message="Todo {} doesn't exist".format(todo_id))

	parser = reqparse.RequestParser()
	parser.add_argument('task')


	# Todo
	# shows a single todo item and lets you delete a todo item
	class Todo(Resource):
	def get(self, todo_id):
	abort_if_todo_doesnt_exist(todo_id)
	return TODOS[todo_id]

	def delete(self, todo_id):
	abort_if_todo_doesnt_exist(todo_id)
	del TODOS[todo_id]
	return '', 204

	def put(self, todo_id):
	args = parser.parse_args()
	task = {'task': args['task']}
	TODOS[todo_id] = task
	return task, 201


	# TodoList
	# shows a list of all todos, and lets you POST to add new tasks
	class TodoList(Resource):
	def get(self):
	return TODOS

	def post(self):
	args = parser.parse_args()
	todo_id = int(max(TODOS.keys()).lstrip('todo')) + 1
	todo_id = 'todo%i' % todo_id
	TODOS[todo_id] = {'task': args['task']}
	return TODOS[todo_id], 201

	##
	## Actually setup the Api resource routing here
	##
	api.add_resource(TodoList, '/todos')
	api.add_resource(Todo, '/todos/<todo_id>')


	if __name__ == '__main__':
	app.run(debug=True)

	$ curl http://localhost:5000/todos
	{
	"todo1": {
	"task": "build an API"
	},
	"todo2": {
	"task": "?????"
	},
	"todo3": {
	"task": "profit!"
	}
	}

	$ curl http://localhost:5000/todos/todo2 -X DELETE -v
	* Trying ::1...
	* TCP_NODELAY set
	* Connection failed
	* connect to ::1 port 5000 failed: Connection refused
	* Trying 127.0.0.1...
	* TCP_NODELAY set
	* Connected to localhost (127.0.0.1) port 5000 (#0)
	> DELETE /todos/todo2 HTTP/1.1
	> Host: localhost:5000
	> User-Agent: curl/7.64.1
	> Accept: /
	>
	* HTTP 1.0, assume close after body
	< HTTP/1.0 204 NO CONTENT
	< Content-Type: application/json
	< Server: Werkzeug/1.0.1 Python/3.9.2
	< Date: Sat, 06 Mar 2021 03:29:33 GMT
	<
	* Closing connection 0

	$ curl http://localhost:5000/todos -d "task=something new" -X POST -v
	Note: Unnecessary use of -X or --request, POST is already inferred.
	* Trying ::1...
	* TCP_NODELAY set
	* Connection failed
	* connect to ::1 port 5000 failed: Connection refused
	* Trying 127.0.0.1...
	* TCP_NODELAY set
	* Connected to localhost (127.0.0.1) port 5000 (#0)
	> POST /todos HTTP/1.1
	> Host: localhost:5000
	> User-Agent: curl/7.64.1
	> Accept: /
	> Content-Length: 18
	> Content-Type: application/x-www-form-urlencoded
	>
	* upload completely sent off: 18 out of 18 bytes
	* HTTP 1.0, assume close after body
	< HTTP/1.0 201 CREATED
	< Content-Type: application/json
	< Content-Length: 32
	< Server: Werkzeug/1.0.1 Python/3.9.2
	< Date: Sat, 06 Mar 2021 03:31:02 GMT
	<
	{
	"task": "something new"
	}
	* Closing connection 0

	$ curl http://localhost:5000/todos/todo3 -d "task=something different" -X PUT -v
	* Trying ::1...
	* TCP_NODELAY set
	* Connection failed
	* connect to ::1 port 5000 failed: Connection refused
	* Trying 127.0.0.1...
	* TCP_NODELAY set
	* Connected to localhost (127.0.0.1) port 5000 (#0)
	> PUT /todos/todo3 HTTP/1.1
	> Host: localhost:5000
	> User-Agent: curl/7.64.1
	> Accept: /
	> Content-Length: 24
	> Content-Type: application/x-www-form-urlencoded
	>
	* upload completely sent off: 24 out of 24 bytes
	* HTTP 1.0, assume close after body
	< HTTP/1.0 201 CREATED
	< Content-Type: application/json
	< Content-Length: 38
	< Server: Werkzeug/1.0.1 Python/3.9.2
	< Date: Sat, 06 Mar 2021 03:32:44 GMT
	<
	{
	"task": "something different"
	}
	* Closing connection 0