##
8.5 #unless

The template:

      #set $count = 9
      #unless $count + 5 > 15
      Count is in range.
      #end unless

The output:

      Count is in range.

The generated code:

              count = 9
              if not (count + 5 > 15):
                  write('Count is in range.\n')

Note: There is a bug in Cheetah 0.9.13. It's forgetting the parentheses in the `if` expression, which could lead to it calculating something different than it should.