Comma-separated values in ini config files

in test.ini:
[test]
commatest=foo,bar

in conf.py:
COMMATEST = Config('commatest', default='mydefault', type=str, help='Test for omma separated values')

in your views/templates:
conf.COMMATEST.get() # => "['foo','bar']" (a string!)

I thought it would be related to configobj, so I tried
[test]
commatest=string(foo,bar)

but that results in
conf.COMMATEST.get() # => "['string(foo','bar)']"