Delete contents of a .txt file in Micropython

[railmonitor]

Hello.

I have tried to delete the contents of a file "record.txt" on my SD card, trying a few different methods that i found round and about.

However most of these methods does not work on a Micropython platform. truncate(0) does not work. Opening the file in write mode and closing it again also doesn't delete the contents.

These are the two most common methods i have found people using online. Does anyone here have a good method for doing this? I don't want the filename deleted, just all it's content.

Best Regards
RM