python regular expression findall

The number of matches is defined with {}Re.search can generate group () that can access the string for each groupThe result of Re.findall is a list of elements that can be a string or a tuplemicrosoftwindows[version 6.1.7601] copyright (c) 2009microsoftcorporation. All rights reserved. c:\users\user>pythonpython3.5.2| anaconda4.2.0 (64-bit) | (default,jul52016,11:41:13) [MSC v.190064bit (AMD64)]onwin32type "Help", "copyright", " Credits "or" license "formoreinformation.>>>importre>> >str= "ATGT

--. *?#Return to listb = Re.findall ('xx.*?xx', ST)#print (b)#Run Results#[' Xxixx ', ' Xxlovexx ', ' xxyouxx ']#Non-greedy algorithm (Point star question mark) less food and more meals--. *?#Return to listc = Re.findall ('xx (. *?) XX', ST)#print (c)#Run Results#[' I ', ' love ', ' You ']#Re. S matches line breakSS=" "Asdfasxxixxdafqewxxlovexxsadawexxyouxxas" "D= Re.findall ('xx (. *?) XX', SS) e= Re.findall ('xx (. *?) XX', Ss,re. S)Print("no re. S:%s\n has re. s:%s"%(d,e))#Run Results#no re.

ImportRest='Asxxixxsaefxxlovexxsdwdxxyouxxde'#the difference between search () and findall ()a= Re.search ('xx (. *?) XXSAEFXX (. *?) Xxsdwdxx (. *?) XX', ST)#print (a)#Run Results##Group () methodb = Re.search ('xx (. *?) XXSAEFXX (. *?) Xxsdwdxx (. *?) XX', ST). Group (3)Print(b)#Run Results# YouC= Re.findall ('xx (. *?) XXSAEFXX (. *?) Xxsdwdxx (. *?) XX', ST)Print(c)#The list in the results contains a tuple, and only the string to be matched has#'

Reprint Please specify source: https://www.cnblogs.com/oceanicstar/p/9244783.htmlgo straight to the first example>>> Re.search ('(book+)','Mebookbookme'). Groups () (' Book',)>>> Re.search ('(book+)','Mebookbookme'). Group ()' Book'>>> Re.search ('(book) +','Mebookbookme'). Groups () (' Book',)>>> Re.search ('(book) +','Mebookbookme'). Group ()'BookBook'>>> Re.findall ('(book) +','Mebookbookme')[' Book']>>> Re.findall ('(book+)','Mebookbookme')[' Book',' Book']is it all dizzy? at this point, you

that matches all the parentheses in the expression>>> Re.findall (R ' A (b) (c) ', ' abcabc ')[(' B ', ' C '), (' B ', ' C ')](2) When there is only one parenthesis in the regular expressionThe elements of the returned list are surrounded by all the expressions that can be successfully matchedAnd the elements in the list are strings>>> Re.findall (R ' A (b) C ', ' ABCABC ')[' B ', ' B '](3) When there are

Example of using the regular findall function in python, pythonfindall Example of using the regular findall function in python I learned the regular search () function. This function

Match : Match only once, the start match does not go up, then does not continue matching a,b,\w+Match (A, "abcdef") matches a>>> Re.match ("A", "abcdef"). Group () ' A ' match (b, "abcdef") >>> print Re.match ("b "," abcdef ") Nonematch (" \w+ "," abcdef ")search, full string match, but match only once, match does not continue to match a, b,\w+>>> Re.search ("A", "ABCDEF ABC 123 456"). Group () ' A ' >>> re.search ("B", "ABCDEF ABC 123 456"). Group () ' B ' >>> re.search ("\w+", "abcdef ABC 123

Python Regular Expression operation guide, python Regular Expression Python has added the re module since version 1.5. It provides the Perl-style r