hi, bro! i just learn python for over 1 month and ...
i am learning python on codecademy, when i studying the lesson about dictionaries and list, "shopping at the market"
i have an idea !
i wanna write a software which will update the number of products remain in the store, update price of the product, update number of days to expiry date
*) i will have a interface for user key in the number of products, the price when they want to change manually
*) the software will update number of days to expiry date by reading the date on computer of that day and subtract to the date in dictionaries for expiry date
*) i will update the number of product in store when some product be sold. this dictionaries will update when ? because when one product to be sold, the RFID device will reads the price on that product, i want each time the RFID device reads the price, we can recognize what is that product, and immediately update to the dictionaries of number of product in software
but i dont know HOW TO KNOW When RFID reads price of product so that i can update the number of product in software ?
and HOW TO KNOW WHAT product has been selling ? (I MEAN HOW TO GET INFORMATION FROM RFID device )
please tell me or give me some advice ?