Getting 'The file is already being used by another process.'

[mfandre]

This simple script is getting 'The file is already being used by another process.'

from winsys import fs

folder_path = "c:"

for f in fs.flat (folder_path):
    print(f)
    for ace in f.security().dacl:
        access_flags = fs.FILE_ACCESS.names_from_value (ace.access)

winsys.security.x_security: (32, 'GetNamedSecurityInfo', 'O arquivo já está sendo usado por outro processo.')