python格式化字符串示例

1. 使用百分号（%）实现格式化字符串

name = "Tom"
age = 25
print("My name is %s, and I am %d years old." % (name, age))

输出：My name is Tom, and I am 25 years old.

2. 使用format()方法实现格式化字符串

name = "Tom"
age = 25
print("My name is {}, and I am {} years old.".format(name, age))

输出：My name is Tom, and I am 25 years old.

3. 使用f-strings实现格式化字符串

name = "Tom"
age = 25
print(f"My name is {name}, and I am {age} years old.")

输出：My name is Tom, and I am 25 years old.