How come a file doesn't get written until I stop the program?

Question

I\'m running a test, and found that the file doesn\'t actually get written until I control-C to abort the program. Can anyone explain why that would happen?

I expec

Answer 1

You have to force the write, so I i use the following lines to make sure a file is written:

# Two commands together force the OS to store the file buffer to disc
    f.flush()
    os.fsync(f.fileno())