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[Python Rest API] Python example for building an API #linux #python #json #api
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#!/bin/bash | |
cd /opt | |
mkdir sqlite3-databases ; cd sqlite3-databases | |
wget http://www.sqlitetutorial.net/wp-content/uploads/2018/03/chinook.zip | |
unzip chinook.zip ; rm chinook.zip | |
virtualenv venv | |
source venv/bin/activate | |
pip install flask flask-jsonpify flask-sqlalchemy flask-restful | |
pip freeze |
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from flask import Flask, request | |
from flask_restful import Resource, Api | |
from sqlalchemy import create_engine | |
from json import dumps | |
from flask import jsonify | |
db_connect = create_engine('sqlite:////opt/sqlite3-databases/chinook.db') | |
app = Flask(__name__) | |
api = Api(app) | |
class Employees(Resource): | |
def get(self): | |
conn = db_connect.connect() # connect to database | |
query = conn.execute("select * from employees") # This line performs query and returns json result | |
return {'employees': [i[0] for i in query.cursor.fetchall()]} # Fetches first column that is Employee ID | |
class Tracks(Resource): | |
def get(self): | |
conn = db_connect.connect() | |
query = conn.execute("select trackid, name, composer, unitprice from tracks;") | |
result = {'data': [dict(zip(tuple(query.keys()), i)) for i in query.cursor]} | |
return jsonify(result) | |
class Employees_Name(Resource): | |
def get(self, employee_id): | |
conn = db_connect.connect() | |
query = conn.execute("select * from employees where EmployeeId =%d " % int(employee_id)) | |
result = {'data': [dict(zip(tuple(query.keys()), i)) for i in query.cursor]} | |
return jsonify(result) | |
api.add_resource(Employees, '/employees') # Route_1 | |
api.add_resource(Tracks, '/tracks') # Route_2 | |
api.add_resource(Employees_Name, '/employees/<employee_id>') # Route_3 | |
if __name__ == '__main__': | |
app.run(port='5002') |
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