Django REST框架创建一个简单的Api实例讲解

yipeiwu_com5年前Python基础

Create a Simple API Using Django REST Framework in Python

WHAT IS AN API

API stands for application programming interface. API basically helps one web application to communicate with another application.

Let's assume you are developing an android application which has feature to detect the name of a famous person in an image.

Introduce to achieve this you have 2 options:

option 1:

Option 1 is to collect the images of all the famous personalities around the world, build a machine learning/ deep learning or whatever model it is and use it in your application.

option 2:

Just use someone elses model using api to add this feature in your application.

Large companies like Google, they have their own personalities. So if we use their Api, we would not know what logic/code whey have writting inside and how they have trained the model. You will only be given an api(or an url). It works like a black box where you send your request(in our case its the image), and you get the response(which is the name of the person in that image)

Here is an example:

PREREQUISITES

conda install jango
conda install -c conda-forge djangorestframework

Step 1

Create the django project, open the command prompt therre and enter the following command:

django-admin startproject SampleProject

Step 2

Navigate the project folder and create a web app using the command line.

python manage.py startapp MyApp

Step 3

open the setting.py and add the below lines into of code in the INSTALLED_APPS section:

'rest_framework',
'MyApp'

Step 4

Open the views.py file inside MyApp folder and add the below lines of code:

from django.shortcuts import render
from django.http import Http404
from rest_framework.views import APIView
from rest_framework.decorators import api_view
from rest_framework.response import Response
from rest_framework import status
from django.http import JsonResponse
from django.core import serializers
from django.conf import settings
import json
# Create your views here.
@api_view(["POST"])
def IdealWeight(heightdata):
 try:
  height=json.loads(heightdata.body)
  weight=str(height*10)
  return JsonResponse("Ideal weight should be:"+weight+" kg",safe=False)
 except ValueError as e:
  return Response(e.args[0],status.HTTP_400_BAD_REQUEST)

Step 5

Open urls.py file and add the below lines of code:

from django.conf.urls import url
from django.contrib import admin
from MyApp import views
urlpatterns = [
 url(r'^admin/', admin.site.urls),
 url(r'^idealweight/',views.IdealWeight)
]

Step 6

We can start the api with below commands in command prompt:

python manage.py runserver

Finally open the url:

http://127.0.0.1:8000/idealweight/

References:

Create a Simple API Using Django REST Framework in Python

以上就是本次介绍的关于Django REST框架创建一个简单的Api实例讲解内容,感谢大家的学习和对【听图阁-专注于Python设计】的支持。

相关文章

Python常见数据结构详解

本文详细罗列归纳了Python常见数据结构,并附以实例加以说明,相信对读者有一定的参考借鉴价值。 总体而言Python中常见的数据结构可以统称为容器(container)。而序列(如列表...

python 时间戳与格式化时间的转化实现代码

python 里面与时间有关的模块主要是 time 和 datetime 如果想获取系统当前时间戳:time.time() ,是一个float型的数据 获取系统当前的时间信息 : tim...

python实现ipsec开权限实例

本文实例讲述了python实现ipsec开权限的方法。分享给大家供大家参考。具体实现方法如下: windows自带的命令行工具netsh ipsec static add filter不...

Python 类属性与实例属性,类对象与实例对象用法分析

Python 类属性与实例属性,类对象与实例对象用法分析

本文实例讲述了Python 类属性与实例属性,类对象与实例对象用法。分享给大家供大家参考,具体如下: demo.py(类属性,所有实例对象共用类属性): # 定义工具类 继...

如何基于python操作excel并获取内容

这篇文章主要介绍了如何基于python操作excel并获取内容,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下 背景:从excel表中获...