Python string formatting

The string formatting operator (%) applies only to string types, very similar to the string formatting of the printf () function in C, and even uses the same symbols, with percent sign (%), and supports all printf () format operations. The syntax is as follows:
Format_String% String_to_convert
Format_String is a format-tagged string, in the form "%cdoe"; String_to_convert is a string to be formatted, and if it is more than two, it needs to be enclosed in parentheses.

Td>%g/%g

string formatting symbols

formatting symbols	description
% c	converted to a character (ASCII value, or a string of one length)
%r	takes precedence over string conversions with the repr () function (Python2.0 new)
%s	takes precedence over string conversions with the str () function
%d/%i	go to signed decimal number
%u	turns unsigned decimal number
%o	turns unsigned octal number
%x /%x	(Unsigned) turns to unsigned hexadecimal number (x/x represents large lowercase for converted hexadecimal characters)
%e/%e	to scientific notation (e/e control output e/e)
%f/%f	turn into floating-point numbers (fractional parts naturally truncated)
%e and%f/%e and%f abbreviations
%%	output%

>>> #打印字符串 >>> print (' My name is%s '% ' Rusky ') My name is rusky>>> #打印整数 >>> print (' He i  S%d years old '% (in)) He is years old>>> #打印浮点数 >>> print (' His height is%f M '% (1.78)) He height is 1.780000 m>>> print (' His height is%.2f M '% (1.78)) He height is 1.78 m>>> #指定占位符宽度 >>> print ( ' name:%10s age:%8d height:%8.2f '% (' Rusky ', 26,1.78)) Name:     Rusky Age:      Height:    1.78>>> # Specify placeholder width-left alignment >>> print (' name:%-10s age:%-8d height:%-8.2f '% (' Rusky ', 26,1.78)) Name:rusky      age:26       height:1.78    

　　

Python string formatting