2020-10-16 22:26:50 +02:00

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python3 script for reading corona case numbers for Marburg-Biedenkopf area. Sends data to a telegram channel, if you set a bot_token and chat_id.

dependencies

pip install -r requirements.txt

invocation

$ python mrcovid19bot.py

You can easily convert the output to CSV format:

$ python mrcovid19bot.py`| tr '\t' ','

To only see the latest available numbers:

$ python mrcovid19bot.py`| head -n2

To mit the headers:

$ python mrcovid19bot.py`| tail -n+2

The above can obviously be combined to your liking for thing like graph plotting.

example output

[fix@radon mrcovid19bot]$ python mrcovid19bot.py  | head -n 5
date	infected	stationary	recovered	passed	incidence
16.10.2020	746	6	540	5	59.2
15.10.2020	704	7	522	5	54.0
14.10.2020	658	7	512	5	41.4
13.10.2020	634	9	504	5	43.8

posting to telegram

The bot can post to telegram channels, chats and groups.

HowTo:

create a Telegram bot token at the BotFather
create a new channel or find out your target chat's chat_id
set them as environment variables:

export CHAT_ID='@mrcovid19updates'
export BOT_TOKEN='XXXXXXXXXXX:YYYYYYYYYYYYYYYYYYYYYYYYYYYYYY'

run the script as mentioned in invocation

systemd integration

This script can run via a systemd-timer, especially as (non-root) user-units.

setup

fill in the Environment variables in mrcovid19bot.service with your BOT_TOKEN and CHAT_ID. These values will be passed to the script.
copy the files mrcovid19bot.service and mrcovid19bot.timer to the directory that holds the user units, for Arch Linux this is ${HOME}/.config/systemd/user.
run systemctl --user daemon-reload and enable the timer: systemctl --user start mrcovid19bot.timer. The provided timer file will start the matching service file once a day.
you might want to enable lingering (else the timer/service gets killed if you have no more active systemd-slices, aka you have no active login): loginctl enable-linger ${USER}

You can check the timer status like this:

$ systemctl --user status mrcovid19bot.timer
● mrcovid19bot.timer - mrcovid19bot timer
     Loaded: loaded (/home/user/.config/systemd/user/mrcovid19bot.timer; enabled; vendor preset: enabled)
     Active: active (waiting) since Fri 2020-10-16 22:18:35 CEST; 3s ago
    Trigger: Sat 2020-10-17 22:14:04 CEST; 23h left
   Triggers: ● mrcovid19bot.service

Okt 16 22:18:35 radon systemd[580]: Started mrcovid19bot timer.

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