app.py

#!-*- coding: utf-8 -*-
import os
import json
import re
from flask import Flask
from flask import request

app = Flask(__name__)

@app.route('/',methods=['GET', 'POST'])
def hello():
    if request.method == 'GET':
        return 'lingr:hi Bot(DiceBot)'
    elif request.method =='POST':
        req = json.loads(request.body)
        for e in req['events']:
            if e['message']:
                m = e['message']['text']
                u = e['message']['text']
                if re.search('^hi',m):
                    return 'hi'+u

if __name__ == '__main__':
    # Bind to PORT if defined, otherwise default to 5000.
    port = int(os.environ.get('PORT', 5000))
    app.run(host='0.0.0.0', port=port)