As a discussion we had in Hackathon today, we concluded there is a need for guideline for our codes (something like WP:MoS for codes)

there is already this but it's not for us and we can use it though

Some things I suggest to add to the guideline in the future:
1- Don't use commented out codes
2- use "bot" instead of "robot" in naming and documentation  
3- Don't use \t (tab character) in codes

What do you think about this? if you agree I'll start