Node.py File Reference

noqa: ATL902 More...

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Classes
class	python.Node.Node

Namespaces
namespace	python
namespace	python.Node

Functions
	python.Node.notDefined (flags, name)
	python.Node.decode_flags (flags, domain=None)
	python.Node.update_flags (flags, node, domain="")
	python.Node.topnode (flags)

Variables
int	python.Node._UNLOCKED = 0
int	python.Node._LOCKED = 1
int	python.Node._LOCKED_FOREVER = 2

Detailed Description

noqa: ATL902

   Node class to represent flags as an actual tree.
   When requesting a feature (node or flag) from a node, 
   the precendence is:

    1. Node or flag from this current local node
    2. Dynamically loaded node or flag on this local node
    3. Node or flag on the top level node 
    4. Dynamically loaded node or flag on the top level node

   because of this, a local node with the same name as a
   top level node will always mask the top level node, so if you 
   have a local node and you want to explicitly access that top 
   level node, then use the idiom

      topnode(flags).MyNode

   or, should you have a lot of such nodes

      topflags = topnode(Mode)
      topflasgs.MyNode

   If you need to configure a sub-algorithm where that algorithm
   configuration lives outside the domain of the current node, then
   you can do things like

      # on node flags.SomeDomain, 
      AlgConfig( flags.TopDomain.NewDomain ) 

Author

sutt

Date

Tue 11 Aug 2026 19:04:50 BST

Id

Node.py, v0.0 Tue 11 Aug 2026 19:04:50 BST sutt

Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration

Definition in file Node.py.