pyb SD
(Construction) Examples on how to use the SD card.
Conflict about SD card access when connected to host machine. Its mounted as a Drive. But if its mounted as a drive then its ot available for the embedded CPU to use.
Note: Once you've opened a file. You can readlines() as usual but there is an issue with lists. .readlines() can be written as the equivalent list(f) if you really need the list of lines.