I have found several answers (encoding, decoding...) online, but I still don't get what to do. 

I have a list called abc.

```
abc = ['sentence1','-1','sentence2','1','sentence3','0'...]

```

Now I would like to store this list in a CSV file, the following way:
sentence1, -1
sentence2, 1
sentence3, 0

I know that the format of my abc list probably isn't how it should to achieve this. I guess it should be a list of lists? But the major problem is actually that I have no clue how to write this to a CSV file, using Python 3. The only times it kinda worked, was when every character turned out to be separated by a comma.

Does anybody know how to solve this? Thank you!