code: def list_namespaces():
      '''Print out a listing of available namespaces'''
      print('{:30s}\t{:40s}'.format('NAME', 'DESCRIPTION'))
      print('-' * 78)
      for sch in sorted(__NAMESPACE__):
          desc = __NAMESPACE__[sch]['description']
          desc = (desc[:44] + '..') if len(desc) > 46 else desc
          print('{:30s}\t{:40s}'.format(sch, desc)f list_namespaces():
      '''Print out a listing of available namespaces'''
      print('{:30s}\t{:40s}'.format('NAME', 'DESCRIPTION'))
      print('-' * 78)
      for sch in sorted(__NAMESPACE__):
          desc = __NAMESPACE__[sch]['description']
          desc = (desc[:44] + '..') if len(desc) > 46 else desc
          print('{:30s}\t{:40s}'.format(sch, desc))
docs: Print out a listing of available namespaces