format函数公式

format函数公式

python format函数用法详解：

1、位置

print("hello {0}， this is {1}.".format("world"， "python")) # 根据位置下标进行填充

print("hello {}， this is {}.".format("world"， "python")) # 根据顺序自动填充

print("hello {0}， this is {1}. {1} is a new language.".format("world"， "python")) # 同一参数可以填充多次

输出：

hello world， this is python.

hello world， this is python.

hello world， this is python. python is a new language.

2、key

obj = "world"

name = "python"

print("hello {obj}， this is {name}.".format(obj = obj， name = name))

输出：

hello world， this is python.

3、列表

list = ["world"， "python"]

print("hello {names}， this is {names}.".format(names = list))

输出：

hello world， this is python.