3 Steps Line Notify API Inform Group Member by Token

Estimated reading time: 6 minutes

 

 

 

Download Guideline

• Prepare Python environment for Windows by clicking Python Downloads, or search a Python setup pack for Linux.
• The pack of Windows version also contains pip install for you to obtain more Python libraries in the future.

 DOWNLOAD SOURCE

 

 

Login Line Notify

When you login the Line Notify website, you will be a friend of Line Notify. You should have a email linking to your phone number in Line app. If forgot, check Line settings in your mobile phone.

There is a verification to be taken. Once done, Line Notify is your new friend.

 

Invite Line Notify to The Group

Remember to invite your new friend to the group you have joined. And then people in the group can receive real-time notifications from Line Notify.

 

 

Generate Access Token

Through the friend Line Notify, when you would like to fire a message to group members, you should have an access token associated with the group. Click the generate token button in “my page” and search for your group which has the friend Line Notify.

Alternatively, you can choose the default 1-on-1 chat group. Then notifications can be sent to only yourself.

When you submit and see the token, copy it to a secure place because of the notice “If you leave this page, you will not be able to view your newly generated token again. Please copy the token before leaving this page.”

 

Line Notify Token Complete

When generating token successfully, the Line Notify friend gives you some notices to welcome your participation.

You can apply more than one token, or remove tokens. To remove tokens, click disconnect button on the website.

 

 

Crawling Websites

We use the library Python requests to scrape the Yahoo stock website. Once getting data, BeautifulSoup parses them to find the price of Tesla, Inc. You can get more practices about BeautifulSoup in our previous article.

 # Python Scraping using BeautifulSoup
import requests
from bs4 import BeautifulSoup
def get_span(id) :
    return info.find("span", attrs={"data-reactid": id}).string
the_url = "https://finance.yahoo.com/quote/TSLA/"
r = requests.get(the_url)
if r.status_code != 200:
    print('Download Err: '+r.url)
    exit()
soup = BeautifulSoup(r.text, "html.parser")
info = soup.find("div", attrs={"id": "quote-header-info"})
items = list()
items.append(info.find("h1").string)
items.append(get_span("9"))
items.append("{} {}".format(get_span("32"), get_span("33")))
items.append(get_span("35"))
notification = "\n".join(items)
print(notification)

The crawled result are as below.

$ python notify.py

Tesla, Inc. (TSLA)

NasdaqGS - NasdaqGS Real Time Price. Currency in USD

872.79 +32.98 (+3.93%)

At close:  4:00PM EST

{'status': 200, 'message': 'OK'}

 

Manual Notifications

With the secure token, request Line Notify API to send messages if conditions are satisfied in our Python codes. For example, if Telsa stock price is larger than 850, the crawled stuff are sent out. Each token determines a target group.

token = "HUkpcDV6KJ2KMVmypDp3iVhcojmuuPbQn7bZbcJl9S1"
stock_price = float(get_span("32"))
if stock_price > 850:
    headers = {
        "Authorization": "Bearer " + token,
        "Content-Type": "application/x-www-form-urlencoded"
    }
    params = { "message": notification }
    r = requests.post("https://notify-api.line.me/api/notify", headers=headers, params=params)
    print(r.json())

The possible failed results are shown.

{'status': 401, 'message': 'Invalid access token'}

Check your mobile phone to find notifications.

 

Auto Notifications

In Linux, you can schedule the command line, python notify.py daily at the time of 10 minutes after stock market closed. Thus auto system is running to report specified stock prices.

 # m h  dom mon dow   command

 # Hourly check deamons

 10 16 * * *  python notify.py

 

Removing Token

The alternative Line Notify API revoke can remove your token if no longer necessary. It is simply shown below.

 # Line Notify Revoke
import requests
token = "HUkpcDV6KJ2KMVmypDp3iVhcojmuuPbQn7bZbcJl9S1"
headers = {
    "Authorization": "Bearer " + token,
    "Content-Type": "application/x-www-form-urlencoded"
}
params = { "message": "" }
r = requests.post("https://notify-api.line.me/api/revoke", headers=headers, params=params)
print(r.json())

Issue the command line to disconnect or remove the token.

$ python revoke.py

{'status': 200, 'message': 'OK'}

 

Line Notify in PHP

Alternatively, the PHP codes for Line Notify are as below. There is just a dummy message to send.

<?php
line_notify('This is a dummy test');
function line_notify($msg) {
    $curl = curl_init();
    $token = "HUkpcDV6KJ2KMVmypDp3iVhcojmuuPbQn7bZbcJl9S1";
    curl_setopt_array($curl, array(
      CURLOPT_URL => 'https://notify-api.line.me/api/notify',
      CURLOPT_RETURNTRANSFER => true,
      CURLOPT_ENCODING => '',
      CURLOPT_MAXREDIRS => 10,
      CURLOPT_TIMEOUT => 30,
      CURLOPT_FOLLOWLOCATION => true,
      CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
      CURLOPT_CUSTOMREQUEST => 'POST',
      CURLOPT_POSTFIELDS => [ "message"=>$msg ],
      CURLOPT_HTTPHEADER => array(
        "Authorization: Bearer $token",
        "Content-Type: multipart/form-data"
      ),
    ));
    $str = curl_exec($curl);
    echo $str;
}
?>

$ php notify.php

{'status': 200, 'message': 'OK'}

 

 

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