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[0]} , this is { names[1]} .".format(names = list))

输出：

hello world, this is python.

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