使用Python的format函数写三句话

`format()` 函数是 Python 中一种强大的字符串格式化工具，它允许你在运行时动态插入变量到字符串中。以下是三个例子：

1. **基本格式化**：

   name = "Alice"
   age = 25
   sentence = "My name is {} and I am {} years old.".format(name, age)
   print(sentence)  # 输出: My name is Alice and I am 25 years old.

2. **字段命名**：

   score = 90
   percentage = score / 100 * 100
   sentence = "{name}'s score is {score} which is {percentage:.2f}%".format(name="John", score=score, percentage=percentage)
   print(sentence)  # 输出: John's score is 90 which is 90.00%

3. **关键字参数**：

   name = "Bob"
   hobbies = ["reading", "gaming"]
   sentence = "I like to {hobbies[0]} in my free time. Also, I enjoy {hobbies[1]}."
   print(sentence.format(hobbies=hobbies))  # 输出: I like to reading in my free time. Also, I enjoy gaming.