The delete method helps remove a specific record, which is defined by a username. We will pass username as the JSON object that needs to be deleted from the database.

The following code snippet will create a new route in app.py for the DELETE method for users:

    @app.route('/api/v1/users', methods=['DELETE']) 
    def delete_user(): 
     if not request.json or not 'username' in request.json: 
        abort(400) 
     user=request.json['username'] 
      return jsonify({'status': del_user(user)}), 200 

In the next code snippet, we will call del_user, which deletes the user record specified by username after validating whether it exists or not:

    def del_user(del_user): 
      conn = sqlite3.connect('mydb.db') 
      print ("Opened database successfully"); 
      cursor=conn.cursor() 
      cursor.execute("SELECT * from users where username=? ",
      (del_user,)) 
      data = cursor.fetchall() 
      print ("Data" ,data) 
      if len(data) == 0: 
        abort(404) 
      else: 
       cursor.execute("delete from users where username==?",
       (del_user,)) 
       conn.commit() 
         return "Success" 

Great! We have added the route /handler for the DELETE method for the user resource; let's test it using the following test API call:

    curl -i -H "Content-Type: application/json" -X delete -d '{ 
"username":"manish123" }' http://localhost:5000/api/v1/users

Then, hit the user list API (curl http://localhost:5000/api/v1/users) to see if the changes have been made:

Awesome! User deletion is successful.