re findall python 3

There is a strange problem with practicing the RE module today, and the same regular expression is inconsistent with the results of re.search () matching with Re.compile (). FindAll ().It is very strange, therefore, to record, so as to prevent a similar situation in the future can not solve.1 #!/usr/bin/env Python32 #Author:taoke3 ImportRe4str =''5Pat ='[A-za-z0-9]+://[a-za-z0-9]+\. [A-za-z0-9]+\. (COM|CN)'

strings. The number of strings in the tuple is the same as the logarithm of the parentheses, the content of the string corresponds to the Regular Expression in each bracket, and the discharge order is the order in which the brackets appear. @ 2. when the given regular expression contains a bracket, the list element is a string. The content of this string corresponds to the regular expression in the bracket (not the Matching content of the entire regular expression ). @

Tag: Relative import contains margin Imp expression regular expression string Tran Python re module findall function usage Briefcode Example:1>>>Import re2>>> s ="adfad asdfasdf asdfas asdfawef ASD Adsfas" 3 4>>> reObj1 = Re.compile ('((\w+) \s+\w+)') 5>>>Reobj1.findall

' >>>M.Next(). Group ()' 6 ' >>>M.Next(). Group ()' 777 ' >>>M.Next(). Group () Traceback (most recent call last): File", line1,inch Module> stopiterationAnother example:>>>P= R ' (\d) \1+ ([a-za-z]+) ' >>>S= ' 1111werwrw3333rertert4444 ' >>>P= R ' (\d) \1+ ([a-za-z]*) ' >>> ImportRe>>>Re.findall (P,s) [(' 1 ',' WERWRW '), (' 3 ',' Rertert '), (' 4 ',"')]>>>M=Re.search (P,s)>>>M.group ()' 1111WERWRW ' >>>M.group (1)' 1 ' >>>M.group (2)' WERW

' print ' Finditer () method ' #finditer () method, finditer an iterative object, the iterative method is better than the FindAll methodfor i in p.finditer (a_str): Print i.group () >>>############## #以数字 \d to separate ###############[' One ', ' One ', ' three ', ' foure ', '][' One ', ' One ', ' three ', ' foure ', ']######################################################################################################## #以空白字符 \s to separa

The Python Regular Expression re findall can return matched substrings in the form of a list. Re. findall (pattern, string [, flags]):Search for strings and return all matching substrings in the form of a list. First look at a simpleCode: Import reP =

Searchusing the ' (book+) ' approach to search, the complete content of the match is ' BookBook ', with group () or group (0) returning to the full content. >>> re.search ('(book) +'mebookbookme'). Group ()'bookbook'>>> re.search ('(book) +' ) ' Mebookbookme ' ). Group (0)'bookbook' If you want to use Group (1) or groups () [0], what is the regular expression? You can use the "(?: book) +) ' Non-capturing group (non-numbered group) in the form of (?: expression), the parentheses are not entere

(– This is a summary of the process of personal learning and use, if there is a mistake welcome)The Python regular module re findall and Finditer are similar, but there is a big difference.Both can get all the matching results, which is very different from the search method, while the difference is a return list, a matchobject type of iterator Let's say we have d

Replace the result found by re. findall () in python The regular expression re module uses findall to find the ascii code. Therefore, when the comparison is replaced, the corresponding ascii code is also required to match successfully. The following programs are used to find

the string, and if the match is not successful, match () returns none.function syntax: re. Match(pattern, string, flags=0) Match result: Re.match match succeeds returns an object, otherwise none is returned.Use Group (num=0) or groups () to get matching resultsRe.search function:Scans the entire string and returns the first successful match.function syntax:re. Search(pattern, string, flags=0) Parameters aboveMatch result: Returns a matchi

Python basics 3: re Regular Expressions and python Regular Expressions A regular expression (or RE) is a small, highly specialized programming language embedded in Python that only matches characters. 1. Character Type: Common

found.You can first determine whether to find the re-fetch element, assuming that the pattern in the example has two groups and returns the first group. Have_character = Re.search (pattern,text)if not have_character: Return Have_character.group (1)2.3. MatchMatches the regular expression at the beginning of the given string, for example, Re.match (' P ', ' Python ') returns to the object Matchobject,

The difference between Python full stack--6.1-match-search-findall-group (s) and the calculator instanceMatch, search, FindAll, group (s) differences12345Import re# match FindAll often use# Re.match () #从开头匹配, no match to object returns none# Re.search () #浏览全部字符, matches th

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 can find a matched string to return, but what should I do if I want to find all matched strings? Actually, you must use the

(' \s ', str) are all cut strings and returned to list. But there is a difference.1. Str.split (' \s ') is literally cutting strings according to ' \s '2. Re.split (' \s ', str) is cut according to the blanks. Because the ' \s ' in the normal form is a blank meaning.Re.findall (Pattern, string, flags=0)Find all the substrings of the re match and return them as a list. This match is returned from left to right in an orderly manner. An empty list is re

WebdriverImport UnitTestClass Test1(UnitTest. TestCase):U ' ' Blog Park test ' @classmethodDef SetupClass(CLS): Cls.driver= Webdriver. Firefox () @classmethodDef Teardownclass(CLS): Cls.driver.quit ()Def Test_01(Self):U "" "Position failure Case" ""Self.driver.get ("Https://www.baidu.com")SELF.DRIVER.FIND_ELEMENT_BY_ID (' xxxxx '). Send_keys (U ' Baidu a bit ')SELF.DRIVER.FIND_ELEMENT_BY_ID (' Su '). Click ()Self.asserttrue (True)Def Test_02(Self):U ' failure case 'Self.driver.get ("http://www.

Python Regular Expression-findall#coding =utf-8import re ' # Gets the contents of the match ' ' P = re.compile (R ' \d+ ') print ' Find all the numbers ', P.findall (' One1two2three3four4 ') ' # Get matching Content-more complex examples of ' unicodepage = ' Search FindAll DifferencesSearch finds one and returns at

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 no parentheses in the regular expressionThe e

WebdriverImport UnitTestClass Test1(UnitTest. TestCase):U ' ' Blog Park test ' @classmethodDef SetupClass(CLS): Cls.driver= Webdriver. Firefox () @classmethodDef Teardownclass(CLS): Cls.driver.quit ()Def Test_01(Self):U "" "Position failure Case" ""Self.driver.get ("Https://www.baidu.com")SELF.DRIVER.FIND_ELEMENT_BY_ID (' xxxxx '). Send_keys (U ' Baidu a bit ')SELF.DRIVER.FIND_ELEMENT_BY_ID (' Su '). Click ()Self.asserttrue (True)Def Test_02(Self):U ' failure case 'Self.driver.get ("http://www.

. '>>> Datepat.findall (text)[(' 11 ', ' 27 ', ' 2012 '), (' 3 ', ' 13 ', ' 2013 ')]>>> for month, day, year in Datepat.findall (text):... print (' {}-{}-{} '. Format (year, month, day))...2012-11-272013-3-136. Iterate back Finditer ()The FindAll () method searches for text and returns all matches as a list. If you want to return in an iterative way>>> for M in D