Hello there! 
This is my version of four in a row I made as a python terminal game for the codecademy computer science path. I know i could get the method for the win_check a little shorter, but a loop with 7 iterations or just one doesn’t make such a big difference for a computer (or at least i think so) <.<
Making this was quite fun and a little heavier then the tic tac toe game I made for the project before. The most stunning thing for me was, that the win_check worked at the first time i used it (better is, looks hella confusing and next time I should make it more readable)
If you have suggestions for some improvements let me know!
Lupo