yum info broken

[Neal D. Becker]

yum info yum
Setting up Repo:  development
Reading repository metadata in from local files
developmen: ################################################## 3634/3634
Installed Packages
Name   : yum
Arch   : noarch
Version: 2.1.4
Release: 1
Traceback (most recent call last):
  File "/usr/share/yum-cli/yummain.py", line 151, in ?
    main(sys.argv[1:])
  File "/usr/share/yum-cli/yummain.py", line 62, in main
    result, resultmsgs = base.doCommands()
  File "/usr/share/yum-cli/cli.py", line 368, in doCommands
    self.listPkgs(ypl.installed, 'Installed Packages', self.basecmd)
  File "/usr/share/yum-cli/output.py", line 118, in listPkgs
    self.infoOutput(pkg)
  File "/usr/share/yum-cli/output.py", line 86, in infoOutput
    print _("Size   : %s") % format_number(float(pkg.size()))
NameError: global name 'format_number' is not defined