Configs instead of crutches. Pytestconfig and why we need it

We, the testers, like to automate. But sometimes changing the test environments turns into pain and hell, which can be avoided if you thoroughly study your framing. 

I want to talk about setting up pytest and about how you can split the launch of tests for different environments by adding 10 lines of code. 

The talk will be useful to those who recently started using pytest and doesn't want TO READ DOCUMENTS IN ENGLISH.