使用where子句和return对列表对象进行分组

# 假设有一个包含学生信息的列表对象
students = [
    {"name": "张三", "age": 18, "gender": "男"},
    {"name": "李四", "age": 20, "gender": "男"},
    {"name": "王五", "age": 19, "gender": "女"},
    {"name": "赵六", "age": 21, "gender": "男"},
    {"name": "钱七", "age": 18, "gender": "女"}
]

# 使用where子句筛选年龄为18岁的学生
filtered_students = [student for student in students if student["age"] == 18]

# 使用return返回筛选结果中的姓名和性别
result = [{"name": student["name"], "gender": student["gender"]} for student in filtered_students]

# 打印结果
print(result)