1 # !/usr/bin/env python 2 # -*- coding:utf-8 -*- 3 # ######################### ## 4 # File Name: strformat.py 5 # Author: frank 6 # Email: [email protected] 7 # Created Time: 2018-04-28 12:23:00 8 # ######### ################### 9 10 #Format configuration method inside the slot 11 # {<parameter number>:<format control flag>} 12 13 # : <filling> <alignment> <width> <,> <. precision> <type> 14 # Leading symbol used for padding < left-aligned slot set number of floating point decimal precision integer type 15 #single character> right-aligned output width thousand separator or string maximum output length b,c,d,o,x ,X 16 # ^ Center-aligned float type 17 # e,E,f,% 18 19 a= " {}: The CPU usage of the computer {} is {}% " .format( " 2018-10-10 " , " C " , 10 ) 20 print (a) 21 22 #String processing function 23 24 # str.lower() 25 print ( " AbCdEfGh " .lower()) 26 # str.upper() 27 print ( " AbCdEfGh " .upper()) 28 29 # str.split(sep=None) returns a list , composed of the parts of str separated by sep 30 print ( " A,B,C " .split( " , " )) 31 32 # str.count(sub) Returns the number of times the substring sub appears in str 33 print ( " an apple a day " .count( " a" )) 34 35 # str.replace(old, new) returns a copy of the string str, all old substrings are replaced with new 36 print ( " python " .replace( " n " , " n123.io " )) 37 38 # str.center(width, [fillchar]) The string str is centered according to the width width, filechar is optional. 39 print ( " python " .center(20, " * " )) 40 41 # str.strip(chars) from str strip out the characters listed in the chars to its left and right 42 print ( " = python=" .strip( " =np " )) 43 44 # str.join(ite) adds a str 45 after each element of the iter variable except the last element print ( " , " .join( " ABCDE " ))
