What does format mean in python

Starting from Python 2.6, a new function str.format() for formatting strings has been added, which enhances the function of string formatting.

The basic syntax is to replace the previous % with {} and :.

The format function can accept unlimited parameters, and the positions do not need to be in order.

Example

>>>"{} {}".format("hello", "world")    # 不设置指定位置，按默认顺序
'hello world'
 
>>> "{0} {1}".format("hello", "world")  # 设置指定位置
'hello world'
 
>>> "{1} {0} {1}".format("hello", "world")  # 设置指定位置
'world hello world'

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