This method is used when computing statistics on the
number of individuals in a census row. Refer to Section 40, “
class NumberCell: Base class for numeric
table cells” for a general discussion.
In particular, here we implement the rule that if the
total is in the undefined state (that is, the
.total attribute is negative), the return value
# - - - C e n s u s T o t a l . _ _ f l o a t _ _ def __float__(self): '''Return the floating value of self. ''' if self.total is 0: return 0.0 elif self.total < 0: return 1.0 else: return float(self.total)