Python string method

This article is referenced from the basic Python Tutorial (second edition)

Operation	Grammar	Example	Results
Find sub-string	find ("str") 1. Returns the leftmost index where the substring is located 2. No return-1 3. You can accept the start and end points parameters, the range left closed right open	title = "Monty python ' s Flying Circus" 1.title.find ("Monty")    title.find ("Python") 2.title.find ("Zircus") 3.title.find ("Circus", 0,     #提供起始点和结束点	0 6 -1 -1
Adding a sequence	"Sep". Join (SEQ) Inverse method of 1.split	1.sep = "+" seq = ["1", "2", "3", "4", "5"] Sep.join (seq) 2.sep = "/" dirs = ["", "usr", "bin", "env"] "Sep.join (dirs)	"1+2+3+4+5" "/usr/bin/env"
Split sequence	Str.split ("Sep") Inverse method of 1.join	1. "1+2+3+4+5". Split ("+") 2. "/usr/bin/env". Split ("/")	["1", "2", "3", "4", "5"] ["", "usr", "bin", "env"]
lowercase letters	Str.lower ()	1. "Trondheim Hammer Dance". Lower ()	"Trondheim Hammer Dance"
Capital	Str.upper ()	1. "Trondheim Hammer Dance". Upper ()	"TRONDHEIM HAMMER DANCE"
Title Conversion	String.capwords ()	1.import string String.capwords ("That's all, folks")	"That's all, folks"
Replace	Str.replace (old,new)	1. "This was a test". Replace ("is", "Ezz")	' Thezz ezz a test '
Remove spaces	Str.strip () 1. Remove both sides of the space (without internal) 2. Specify the characters that need to be removed and use them as parameters	1. "Internall whitespace is kept". Strip () 2. "* * * * SPAM * for * everyone!!! ". Strip (" *! ")	"Internall whitespace is kept" "SPAM * for * everyone"
	Str.lstrip () Remove left space	1. "Internall whitespace is kept". Lstrip ()	"Internall whitespace is kept"
	Str.rstrip () Remove Right space	1. "Internall whitespace is kept". Rstrip ()	"Internall whitespace is kept"

Python string method