adii1823
27 lines
744 B
Python
27 lines
744 B
Python
# decorate.sort.undecorate.py
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from pprint import pprint
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students = [
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dict(id=0, credits=dict(math=9, physics=6, history=7)),
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dict(id=1, credits=dict(math=6, physics=7, latin=10)),
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dict(id=2, credits=dict(history=8, physics=9, chemistry=10)),
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dict(id=3, credits=dict(math=5, physics=5, geography=7)),
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]
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def decorate(student):
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# create a 2-tuple (sum of credits, student) from student dict
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return (sum(student['credits'].values()), student)
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pprint(decorate(students[0]))
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def undecorate(decorated_student):
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# discard sum of credits, return original student dict
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return decorated_student[1]
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students = sorted(map(decorate, students), reverse=True)
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students = list(map(undecorate, students))
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pprint(students)
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