News website using Flask and news API - working with API : Part 4

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Hello guys,
Today we will learn about working with API using python.

What is API?

An application programming interface is a computing interface which defines interactions between multiple software intermediaries. It defines the kinds of calls or requests that can be made, how to make them, the data formats that should be used, the conventions to follow, etc.

what is NewsAPI ?

News API is a simple HTTP REST API for searching and retrieving live articles from all over the web. It can help you answer questions like:
  • What top stories is TechCrunch running right now?
  • What new articles were published about the next iPhone today?
  • Has my company or product been mentioned or reviewed by any blogs recently?
Get Started:
First Step is to get API key 
For that, just login to NewsAPI and get the unique key.

Using API with Python:

We need request module or package.
If you have learned java before you can term this as a package with number of functions and classes.

Requests:
Requests allows you to send HTTP/1.1 requests extremely easily. There’s no need to manually add query strings to your URLs, or to form-encode your PUT & POST data — but nowadays, just use the json method!

To install package 

pip install requests


app.py

from flask import Flask
import requests as rq

# intialise data of lists.


app = Flask(__name__)


@app.route('/')
def index():

    api_key = "Your API key"
    url = "http://newsapi.org/v2/top-headlines?country=in&apiKey=" + api_key
    data = rq.get(url)
    print(data)  #check if request getting response or not
    data = data.json()
    print(data)
    articles = data["articles"]

    return "Hello World"


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


Most of the code is the same as the previous hello world.

  • api_key - Key that you get from NewsAPI (This key is completely unique)
  • url - Simple URL with parameters
    • apiKey. Every big organization wants to track data like how many requests are generated by a specific user for that purpose they give a unique key to their API.
    • Country - You can assign any country if you want ( Country Code ) - 54 countries are supported
  • get() - This method request for specified URL and get a response 
  • data.json() - This will return data in JSON format
  • data["articles"] - Return list of articles from data

Output:
(env) E:\flask\newsapp>py app.py
 * Serving Flask app "app" (lazy loading)
 * Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: on
 * Restarting with stat
 * Debugger is active!
 * Debugger PIN: 100-183-505
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
<Response [200]>
{
127.0.0.1 - - [28/May/2020 17:46:23] "?[37mGET / HTTP/1.1?[0m" 200 -


That's it for today.
Next Working with templates

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