[Super easy] Let's make a LINE BOT with Python.
1.First of all
This article is written with the following two prerequisites.
--Easy to understand even for beginners ――Be lean and concise
2. Overview
Personally, the official SDK of LINE Messaging API is difficult to use. https://github.com/line/line-bot-sdk-python
Therefore, I created a wrapper called pylinebot so that even beginners of programming can easily handle LINE BOT.
https://github.com/nanato12/pylinebot
3. Advance preparation (necessary items)
3.1 Creating and setting up a LINE account for BOT
I wrote it in this article, so please refer to it.
3.2 Package installation
This article uses Flask.
You can use Django.
$ pip install flask
$ pip install pylinebot
3.3 ngrok setup
Download from the link below and set it so that you can use ngrok.
https://ngrok.com/
$ ngrok version
ngrok version 2.3.35
4. Let's make an Echolalia bot
Basic form of bot making! For the time being, I feel like making Echolalia.
The directory structure is as follows.
linebot ┠ app.py ┗ op.py
Only this! Sounds easy, doesn't it?
4.1 Write the code
With channel_access_token
Enter the channel_secret of your bot.
app.py
from flask import Flask, request
from pylinebot import LINE, Tracer
from op import receive_message
DEBUG = True
app = Flask(__name__)
bot = LINE(
channel_access_token='XXXXXXXXXXXXXXXXXXX',
channel_secret='XXXXXXXXX'
)
tracer = Tracer(bot, debug=DEBUG)
tracer.add_event('message', receive_message)
#For webhooks
@app.route("/", methods=['POST'])
def hello():
signature = request.headers['X-Line-Signature']
body = request.get_data(as_text=True)
tracer.trace(body, signature)
return 'OK'
#For connection test
@app.route("/test", methods=['GET'])
def test():
return 'OK'
if __name__ == '__main__':
app.run(host='0.0.0.0', port=3000, debug=DEBUG)
op.py
def receive_message(bot, event):
message = event.message
message_type = message.type
if message_type == 'text':
message_text = message.text
bot.reply_text_message(message_text)
### 4.2 Run & Publish & Test
Let's run app.py.
$ python3 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
# * Running on http://0.0.0.0:3000/ (Press CTRL+C to quit)
# * Restarting with stat
# * Debugger is active!
# * Debugger PIN: 984-300-804
Did it start like this?
Let's publish using ngrok in another tab.
$ ngrok http 3000
#ngrok by @inconshreveable (Ctrl+C to quit)
# Session Status online
# Session Expires 7 hours, 58 minutes
# Version 2.3.35
# Region United States (us)
# Web Interface http://127.0.0.1:4040
# Forwarding http://70fc9cf8b47c.ngrok.io -> http:/
# Forwarding https://70fc9cf8b47c.ngrok.io -> http:
# Connections ttl opn rt1 rt5 p50
# 0 0 0.00 0.00 0.00
Use the https URL.
Since / test is used for connection test, in my browser
Let's connect to https://70fc9cf8b47c.ngrok.io/test.
The word ** OK ** is displayed in the browser, It is OK if it is displayed like this on each console.
python3_app.py
127.0.0.1 - - [25/Jun/2020 08:19:04] "GET /test HTTP/1.1" 200 -
ngrok_http_3000
HTTP Requests
-------------
GET /test 200 OK
4.3 Webhook settings
Go here and select a channel for the LINE Messaging API. https://developers.line.biz/console/
From ** Messaging API **> ** Webhook Setting ** Type in the Webhook URL.
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Click ** Verify ** and if ** Success ** appears, it's OK.
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4.4 Operation check
I will actually send it.
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Perfect ✨
5. Conclusion
In addition to text reply, you can easily send videos, send images, quick replies, etc., so I will explain them next time.
There is also a sample source on pylinebot's github, so you may want to take a look. https://github.com/nanato12/pylinebot/tree/master/sample
Nanato when Twitter: @nanato12_dev Email: [email protected] Blog: https://blog.nanato12.info GitHub: https://github.com/nanato12
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