What can parsers do today? Is it possible to parse in real time?

Question

Parsing

I would like to know from knowledgeable people. I am an analyst who would like to do data research. To analyze topics that interest me, in theory, I would need to parse data from sites constantly, since they are updated every second.
Actually, I want to know what modern parsers can do today and is it possible for a beginner in IT to master their programming?
To give a fictitious example, you need to collect online the prices of hotels around the world, which change daily, change depending on the type of room chosen, change depending on the date of booking, new hotels appear daily (new source of prices). That is, in theory, it would be necessary to parse at least bookingcom (not every second of course, but for example, download their entire database once a week). Is it possible for modern parsers to do this?

Answer 1

selenium

Answer 2

I parsed booking.com in a day and a half two years ago. Used scrapy framework