hmarr/django-ses — pull request #62 by sparky300 (2014-04-26 14:39:30+00:00)
Title:  Make sure numerical types are converted #61

You get the error below in Python 2.7 due to one of the values being evaluated as a string.
TypeError: can't multiply sequence by non-int of type 'float'

To resolve make make them all of type float.