Python error programming

Hi, how do I overcome this error?

Hi! The second argument you gave to the function looks wrong. It should be a list of videos (as in: ["/Aplysia/…"]), and make sure the path is the full path. Since you seem to be working on Windows, the absence of backslashes is suspicious. The safest option is to Shift+Right click and Copy as Path, and paste it directly into the list, preceded by an “r”; it should look something like [r"C:…"]