Python string formatting symbol meaning and escape character meaning

String formatting symbolic meaning

Symbol	Description
%c	Formatting characters and their ASCII code
%s	formatting strings
%d	formatting integers
%o	Formatting an unsigned octal number
%x	formatting unsigned hexadecimal numbers
%x	Format unsigned hexadecimal number (uppercase)
%f	Format fixed-point number to specify the precision after the decimal point
%e	Format fixed-point numbers with scientific notation
%E	function with%e, format fixed-point number with scientific notation
%g	Depending on the size of the value, use%f live%e
%G	function with%g, depending on the size of the value, use%f or%e

How to use:

Only one Empty time: print (' xxxx%c '%97)

Multiple Empty Hours: print ('%c%c%c '% (97, 98, 99) need to use tuples

Formatting operator Auxiliary directives

Symbol	Description
M.n	M is the smallest total width displayed, and n is the number of digits after the decimal point
-	Use to align Left
+	Show plus sign (+) in front of positive number
#	Display ' 0o ' before octal number, ' 0x ' or ' 0X ' before hexadecimal number
0	The displayed number is preceded by a fill of ' 0 ' instead of a space

How to use:

M.n:print ('%5.5F '% 27.55), at this time, there are 5 digits after the decimal point, if insufficient will automatically complete, get: ' 27.55000 '
-: Print ('%-010d '%27.55), at this time without the '-' number, will be: ' 0000000027 ', if there is '-', then get: ' 27

' #: Print ('% #o '%12), easy to understand, converted to 8 or 16 input output

String escape character meaning

Symbol	Description
\‘	Single quotation marks
\"	Double quotes
\a	Issue System ring tones
\b	Backspace
\ n	Line break
\ t	Horizontal tab (tab)
\v	Portrait tab
\ r	Carriage return character
\f	Page break
\o	Characters represented by octal numbers
\x	The hexadecimal number represents the character
/	Represents a null character
\\	Back slash

Reprinted from FISHC Forum: http://bbs.fishc.com/thread-39140-1-1.html

Python string formatting symbolic meaning and meaning of escape characters