pydevDAG._traversal module

pydevDAG.traversal

Traversing the sysfs hierarchy.

pydevDAG._traversal.topology_walk(top, follow_slaves=True, recursive=True)

Walk the sysfs directory in depth first search, yielding directories corresponding to devices in sysfs.

Parameters:

• top (str) – directory to begin at
• follow_slaves (bool) – if True, follow slaves, otherwise, holders
• recursive (bool) – if False, only show one level

top itself is not in the result.

pydevDAG._traversal.slaves(context, device, recursive=True)

Yield slaves of device.

Parameters:

• context (Context) – udev context
• device (Device) – device to start from
• recursive (bool) – if False, only show immediate slaves

Returns:

topology walk generator specialized for slaves

pydevDAG._traversal.holders(context, device, recursive=True)

Yield holders of device.

Parameters:

• context (Context) – udev context
• device (Device) – device to start from
• recursive (bool) – if False, only show immediate holders

Returns:

topology walk generator specialized for holders