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实现根据日期获取当天凌晨时间戳的方法示例

本文实例讲述了Python实现根据日期获取当天凌晨时间戳的方法。分享给大家供大家参考,具体如下: # -*- coding:utf-8 -*- #! python2 ''' Crea...

python使用selenium登录QQ邮箱(附带滑动解锁)

python使用selenium登录QQ邮箱(附带滑动解锁)

前言 最近因为工作需要 用selenium做了一个QQ邮箱的爬虫(登录时部分帐号要滑动解锁),先简单记录一下。 这个问题先可以分为两个部分:1.登录帐号和2.滑动解锁。python版本3...

Python使用Pickle模块进行数据保存和读取的讲解

pickle 是一个 python 中, 压缩/保存/提取 文件的模块,字典和列表都是能被保存的. 但必须注意的是python2以ASCII形式保存,而在python3中pickle是使...

python利用dir函数查看类中所有成员函数示例代码

python利用dir函数查看类中所有成员函数示例代码

前言 如果一个类是别人编写的,又没有帮助文档,怎么样来查看所有成员函数呢?本文详细给大家介绍了关于python用dir函数查看类中所有成员函数的相关内容,下面话不多说了,来一起看看详细的...

Python2.7基于笛卡尔积算法实现N个数组的排列组合运算示例

Python2.7基于笛卡尔积算法实现N个数组的排列组合运算示例

本文实例讲述了Python2.7基于笛卡尔积算法实现N个数组的排列组合运算。分享给大家供大家参考,具体如下: 说明:本人前段时间遇到的求n个数组的所有排列组合的问题,发现笛卡尔积算法可以...