Python Learning Notes (22) method of sequence

Note:

#the 22nd standard Library-Regular#This introduces the author's supplemental sequence, which is followeds = [1,2,3,4,5,6]len (s)#number of elements of SMin (s)#s the smallest elementMax (s)#s the largest elementAll (s)#returns True if all elements in S are trueAny (s)#returns True if any element in S is true#Query method for the tuple listSUM (s)#returns the and of all elements in SS.count (x)#x is the element, X is the number of occurrences of this element in SS.index (x)#x is the element, X is the index of the element in S, subscript#additions and deletions sort, apply list#Here are some ways#I remember seeing it before with help, especially the list .#the 10th part of the summary with Help when http://www.cnblogs.com/liyihao/p/7655676.htmlS1= [7,8,9]s.extend (S1)#Add all elements of the list to the end of S S1S.append (x)#increase the X element at the end of SS.sort ()#sort S This list, from small to largeS.reserve ()#reverse OrderS.pop ()#The last element is deleted and returneddelS[2]#Delete an element with an index of 2#Delete operations are performed on the original table, directly affecting the original table, resulting in table changes, not returning a new list#The Str class is also a tuple, but Str is some way of changing the string#The essence of these methods is not to manipulate the original string, but to delete the original STR, the new STRs ='ADSFDF'S1='D'S.count (S1)#The number of occurrences of S1 in SS.find (S1)#looking from the left, S1 the first occurrence in S, if S has no S1, returns-1S.index (S1)#from the left to find, S1 in S for the first time the index position, if s inside no s1, errors.find (S2)#s.index (S2)S.rfind (S1)#starting from the right, S1 the position where s first appeared (the index number is returned, the index number is from the left), and if there is no S1 in S, returns-1S.rindex (S1)#starting from the right, S1 the first occurrence of S, if there is no S1 in S, errors.rfind (S2)#s.rindex (S2)S.isalnum ()#s This str is full of letters or numbers return true, not falseS.isalpha ()#s This time all the characters in STR are letters, return true, not falseS.isdigit ()#all characters are numeric true, not falseS.istitle ()#the first letter of all words is uppercase true, not falseS.isspace ()#all characters are spaces True, not falseS.islower ()#all characters are lowercase True, not falseS.isupper ()#all characters are uppercase True, not false#syntax: str.split (str= "", Num=string.count (str)).#Num=string.count (str)) intercepts a string with the Str delimiter, and only the NUM substring if NUM has a specified value#put the split string back in the listL='F D S J a n'L.split (' ', 6)#Pass 2 parameters, one is divided by what, one is the number of splitsL.rsplit (' ', 5) L='F J D S J A J N'L.split ('J', 2)#It is important to note that the number of splits is 2 and 3 pieces are divided .L.rsplit ('J', 2)#split from right, split 2 times with J as delimiter#syntax: str.join (Sequence)L ='3's= ['1','2','3']l.join (s)#combine elements of S, with Str as delimiters, into a single stringL='F D S J a n's= ['1','2','3']l.join (s)#This is inherited above, just start to see half a day do not understandL='F D S J a n'L.strip ()#remove whitespace from beginning of string and resultL='F D S J a n'L.strip ('F')#string that removes the beginning and result of the string, parameter ' F 'L='F D S J a n'L1='F'#dispensableL2 ='W'#dispensableL.replace ('F','W')#Replace the parameter F with parameter W inside lL='F D S J an'l.capitalize ()#The first letter is capitalized and the other caps are lowercaseL.lower ()#All lowercaseL.upper ()#ALL capsL.swapcase ()#uppercase to lowercase, lowercase to uppercaseL.title ()#capitalize the first letter of each word, separated by a space

Python Learning Notes (22) method of sequence