10.4. statvfs Constants used with os.statvfs()
Deprecated since version 2.6: The statvfs module has been removed in Python 3.
The statvfs module defines constants so interpreting the result if
os.statvfs(), which returns a tuple, can be made without remembering
magic numbers. Each of the constants defined in this module is the index of
the entry in the tuple returned by os.statvfs() that contains the
specified information.