functions_sorted_def.py

>>> # A list of dictionary objects for sorting
>>> grades = [{'name': 'John', 'score': 97},
...           {'name': 'David', 'score': 96},
...           {'name': 'Jennifer', 'score': 98},
...           {'name': 'Ashley', 'score': 94}]
>>> def sorting_grade(x):
...     return x['score']
... 
>>> sorted(grades, key=sorting_grade)
[{'name': 'Ashley', 'score': 94}, {'name': 'David', 'score': 96}, {'name': 'John', 'score': 97}, {'name': 'Jennifer', 'score': 98}]