CSV file with irregular structure

[Larz60+]

I thought maybe there is a way to tell python to compromize the data into one row.

I hope you meant consolidate, don't think you want to work with compromised data.
There must be some sort of delimiter at the end of each record.
It would go a long way to have a sample that contains a few records clipped from the top of the file.

I am also wondering if you are seeing three lines, because of wrapping, and not because of end-line sequences in the data.
Really need to see a sample.