输入班级里五个学生的姓名，年龄，班级，成绩(保留两位有效小数)，并用三种不同格式化的方法打印出。

当然可以。假设我们有学生数据存储在一个列表中，每个元素包含姓名、年龄、班级和成绩，以下是三种不同的格式化方法来打印：

1. **基本格式打印**:

students = [
    {"name": "张三", "age": 18, "class": "一班", "score": 90.50},
    {"name": "李四", "age": 17, "class": "二班", "score": 88.85},
    {"name": "王五", "age": 16, "class": "三班", "score": 92.20},
    {"name": "赵六", "age": 18, "class": "四班", "score": 91.77},
    {"name": "刘七", "age": 17, "class": "五班", "score": 89.45}
]

for student in students:
    print(f"姓名：{student['name']}, 年龄：{student['age']}, 班级：{student['class']}, 成绩：{student['score']:.2f}")

2. **使用字符串格式化（Python f-string）**:

for student in students:
    name, age, class_name, score = student.values()
    print(f"姓名：{name}, 年龄：{age}, 班级：{class_name}, 成绩：{score:.2f}")

3. **使用内置`str.format()`方法**:

for student in students:
    formatted_str = "姓名：{}，年龄：{}，班级：{}，成绩：{:.2f}".format(student["name"], student["age"], student["class"], student["score"])
    print(formatted_str)