What you need to know about the GDPR?

Question

Law in IT

Our company works with European users. In connection with the release of the GDPR law, I have the following questions:
1. Can we collect open data from Europeans in our database. Such as first name, last name, social profile, place of work, email?
2. Can we use this data to show them ads, send them our commercial offers?
3. If the answer to the first two points is negative, then do I understand correctly that when working with Europeans, you can only count on the incoming flow of customers? And cold work is outlawed?

Answer 1

Open data - is it somewhere on third-party forums? or on your site? If you are on the site, then I think that
1. you can
2. you can.
Just in both cases you need to get their consent by ticking "I agree to ....."

Answer 2

The author answers all questions in the negative. You may not process personal data of EU citizens in this way.

Answer 3

I help:
i.e. there is inventory['gold'].append(50)an error in the line.
Why?
because

inventory = {
    'gold' : 500,

is a number, and as they say in the doc https://docs.python.org/2/tutorial/datastructures.html append applies to arrays.
The answer to the question "What to do with all this?" - completely Carrollian - "depends on what you want to get"
PS Python I don't know, answered common sense)