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How to use format in python

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2021-03-09 15:43:32195691browse

How to use format in python: [format():] Replace the traditional [%] with [{}] to achieve formatted output. The code is ['numbers {1}{2} and { 0}'.format("123",456,'789')].

How to use format in python

The operating environment of this tutorial: Windows 7 system, python version 3.9, DELL G3 computer.

How to use format in python:

format() formatted output

format(): replace the traditional % with {} Realize formatted output

Common usage of format():

is actually the content after format(), filled in the curly brackets (you can press the position, or press Variables)

'数字{1}{2}和{0}'.format("123",456,'789')
>>>'数字456789和123'
#这里注意有两层大括号,输出的结果只有一层大括号
'数字{{{1}{2}}}和{0}'.format("123",456,'789')
>>>'数字{456789}和123'
#允许一个参数用两次
'{1}{0}{1}岁'.format('jc',22) 
>>>'22jc22岁'
#可以通过添加关键字参数
'{name}{age}岁'.format(age=22,name='jc') 
>>>'jc22岁'

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