Module NodeSet

source code

Cluster node set module.

A module to deal efficiently with 1D rangesets and nodesets (pdsh-like). Instances of RangeSet and NodeSet both provide similar operations than the builtin set() type and Set object. See http://www.python.org/doc/lib/set-objects.html

Usage example

>>> # Import NodeSet class
... from ClusterShell.NodeSet import NodeSet
>>>
>>> # Create a new nodeset from string
... nodeset = NodeSet("cluster[1-30]")
>>> # Add cluster32 to nodeset
... nodeset.update("cluster32")
>>> # Remove from nodeset
... nodeset.difference_update("cluster[2-5]")
>>> # Print nodeset as a pdsh-like pattern
... print nodeset
cluster[1,6-30,32]
>>> # Iterate over node names in nodeset
... for node in nodeset:
...     print node
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