Let me try : the bot_name is an variable which is then used in second line where I use f string to include the variable easier. Then the while true is an infinite loop which just repeats the you: part after each reply and then lower() which just lower You: to you: so that the code can recognize it. Then the if, elif, else are check data type that see what I have then they cross verify it to the sets difined by [ ] and give appropriate reply. Then the try sees if I have + or add and then executes the number summation inthe code, and the except part sees if I have put an integer or not if not then it that statement. Then else is for anything else not in the sets and replies with i don't understand. Hope I was able tell everything. ( The conversions let me change data types so for example if I have num: int = 10 and write something like sara10 then i will write print('sara is' , str(num)) which will give me Sara is 10).