python-hostlist

python-hostlist is a Python module that knows how to expand and collect hostlist expressions.

Example:

  % python
  Python 2.5.1 (r251:54863, Jul 10 2008, 17:24:48)
  [GCC 4.1.2 20070925 (Red Hat 4.1.2-33)] on linux2
  Type "help", "copyright", "credits" or "license" for more information.
  >>> import hostlist
  >>> hosts = hostlist.expand_hostlist("n[1-10,17]")
  >>> hosts
  ['n1', 'n2', 'n3', 'n4', 'n5', 'n6', 'n7', 'n8', 'n9', 'n10', 'n17']
  >>> hostlist.collect_hostlist(hosts)
  'n[1-10,17]'
  >>> hostlist.collect_hostlist(["x1y1","x2y2", "x1y2", "x2y1"])
  'x[1-2]y[1-2]'

Bad hostlists or hostnames will result in the hostlist.BadHostlist exception being raised.

The 'hostlist' command is provided to expand/collect hostlists and perform set operations on them. Example:

  % hostlist n[1-10] n[5-20]
  n[1-20]
  % hostlist --difference n[1-10] n[5-20]
  n[1-4]
  % hostlist --expand --intersection n[1-10] n[5-20]
  n5
  n6
  n7
  n8
  n9
  n10

Install directly by running

  python setup.py build   (as yourself)
  python setup.py install (as root)

or just copy the hostlist.py, hostlist and hostlist.1 files to appropriate places.

What is new in this release:

• Support Python 3.
• Import reduce from functools if possible.
• Use Python 2/3 installation trick from .../Demo/distutils/test2to3

Requirements:

• Python