python - 使用字典时多次打印输出

Question

我正在尝试运行此 Python 代码:

lloyd = {
    "name": "Lloyd",
    "homework": [90.0, 97.0, 75.0, 92.0],
    "quizzes": [88.0, 40.0, 94.0],
    "tests": [75.0, 90.0]
}
alice = {
    "name": "Alice",
    "homework": [100.0, 92.0, 98.0, 100.0],
    "quizzes": [82.0, 83.0, 91.0],
    "tests": [89.0, 97.0]
}
tyler = {
    "name": "Tyler",
    "homework": [0.0, 87.0, 75.0, 22.0],
    "quizzes": [0.0, 75.0, 78.0],
    "tests": [100.0, 100.0]
}

students = [lloyd, alice, tyler]

for student in students:
    for key in lloyd:
        print lloyd[key]
    for key in alice:
        print alice[key]
    for key in tyler:
        print tyler[key]

接收到的输出正在打印字典的关键数据的多个值。请建议我是否可以更改任何内容，以及如何使用 for 循环打印单独的关键数据，例如测试标记。

Answer 1

对于像'tests'这样的单个键，您可以只使用索引:

>>> for student in students:
...    print student['tests']
... 
[75.0, 90.0]
[89.0, 97.0]
[100.0, 100.0]