Summary of common formatting string methods in Python [percent sign and format method]

The examples in this article describe common formatting string methods in Python. Share it with everyone for your reference, the details are as follows:

[Method 1] Percent sign (%) method, C-like printf, needs to be of different types.

1. Anonymous tuple. (Recommended when there are few parameters)

>>> '姓名：%s, 年龄：%d' % ('walker', 99)
'姓名：walker, 年龄：99'

2. Name the dict, and the dictionary keys can be reused.

>>> '姓名：%(name)s, 年龄：%(age)d, 工龄：%(age)d' % {'name':'walker', 'age':99}
'姓名：walker, 年龄：99, 工龄：99'

[Method 2] format function, there is no need to specify string or numeric type.

1. Anonymous parameters.

>>> '姓名：{0}, 年龄：{1}'.format('walker', 99)
'姓名：walker, 年龄：99'

2. Named parameters, parameters can be reused. (Recommended when there are many parameters)

>>> '姓名：{name}, 年龄：{age}, 工龄：{age}'.format(name='walker', age=99)
'姓名：walker, 年龄：99, 工龄：99'

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