How to specify the name of a node group when creating it from python? I have been creating node groups with the group_make operator, but there doesn't seem to be any way to set properties such as the label or name of the resulting group node.

This makes it difficult to access this node later, and be sure that one is accessing the correct node.

How can I specify node properties on creation?
You can use something like this:

node_grp = bpy.data.node_groups[-1] # to get last created group
node_grp.name = "Special Name" # to set a name