DiskInfo class
- class diskinfo.DiskInfo[source]
This class implements disk exploration functionality. At class initialization time all existing disks will be explored automatically (empty loop devices will be skipped). In a next step,
get_disk_number()
method can return the number of identified disk andget_disk_list()
method can return the list of the identified disks. In both cases disk type filters can be applied to get only a subset of the discovered disks. The filters are set ofDiskType
values.Operator
in
is also implemented for this class. Caller can check if aDisk
class instance can be found on the list of the identified disks.Example
A code example about the basic use of the class and the use of the
in
operator.>>> from diskinfo import Disk, DiskType, DiskInfo >>> di = DiskInfo() >>> n = di.get_disk_number(included={DiskType.SSD}, excluded={DiskType.HDD}) >>> print(f"Number of SSDs: {n}") Number of SSDs: 3 >>> d = Disk("sda") >>> print(d in di) True
- get_disk_list(included=None, excluded=None, sorting=False, rev_order=False)[source]
Returns the list of identified disks. The caller can specify inclusive and exclusive filters for disk types. If no filters are specified the default behavior is to include all disk types and to exclude nothing. The list can be sorted based on the disk name in alphabetical order. Caller can also request sorting in reverse order.
- Parameters:
- Returns:
list of the (filtered) disks
- Return type:
List[Disk]
- Raises:
ValueError – if the same disk type is on both included and excluded filter sets
Example
A code example about using filters and sorting: it will list the device path of the sorted list of the HDDs:
>>> from diskinfo import DiskType, DiskInfo >>> di = DiskInfo() >>> disks = di.get_disk_list(included={DiskType.HDD}, sorting=True) >>> for d in disks: ... print(d.get_path()) ... /dev/sda /dev/sdb /dev/sdc
- get_disk_number(included=None, excluded=None)[source]
Returns the number of the disks. The caller can specify inclusive and exclusive filters for disk types. If no filters are specified then the default behavior is to include all disk types and to exclude nothing.
- Parameters:
- Returns:
number of the (filtered) disks
- Return type:
- Raises:
ValueError – if the same disk type is on both included and excluded filter sets
Example
A code example about using filters: it counts the number of SSDs excluding NVME disks.
>>> from diskinfo import DiskType, DiskInfo >>> di = DiskInfo() >>> n = di.get_disk_number(included={DiskType.SSD}, excluded={DiskType.HDD}) >>> print(f"Number of SSDs: {n}") Number of SSDs: 3