## 5.7.1 Example

The `bisect()` function is generally useful for categorizing numeric data. This example uses `bisect()` to look up a letter grade for an exam total (say) based on a set of ordered numeric breakpoints: 85 and up is an `A', 75..84 is a `B', etc.

      >>> grades = "FEDCBA"
      >>> breakpoints = [30, 44, 66, 75, 85]
      >>> from bisect import bisect
      >>> def grade(total):
      ...           return grades[bisect(breakpoints, total)]
      ...
      >>> grade(66)
      'C'
      >>> map(grade, [33, 99, 77, 44, 12, 88])
      ['E', 'A', 'B', 'D', 'F', 'A']