Python 中的 map

Question

classes = [
  {"name": "n_1", "age": 24, "grade": "A"},   {"name": "n_2", "age": 23, "grade": "B"},   {"name": "n_3", "age": 28, "grade": "A"},   {"name": "n_4", "age": 24, "grade": "A"},   {"name": "n_5", "age": 25, "grade": "C"},   {"name": "n_6", "age": 21, "grade": "D"},   {"name": "n_7", "age": 27, "grade": "A"},]
通过map函数将上述同学的age + 1(对原数据结构有影响, 尽量不要用lambda)

Answer 1

参考：

for c in classes:
    c["age"] = c["age"] + 1

结果：

[{'name': 'n_1', 'age': 25, 'grade': 'A'}, {'name': 'n_2', 'age': 24, 'grade': 'B'}, {'name': 'n_3', 'age': 29, 'grade': 'A'}, {'name': 'n_4', 'age': 25, 'grade': 'A'}, {'name': 'n_5', 'age': 26, 'grade': 'C'}, {'name': 'n_6', 'age': 22, 'grade': 'D'}, {'name': 'n_7', 'age': 28, 'grade': 'A'}]