python re findall example

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)'

Python re module findall () function instance parsing, pythonfindall This article studies the findall () function of the re module. First, let's look at the instance code: >>> import re >>> s = "adfad asdfasdf asdfas asdfawef asd

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

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

#/usr/bin/python#coding =utf-8# @Time: 2017/11/18 18:24# @Auther: Liuzhenchuan# @File: Re's split FindAll Finditer method. pyImport re #re. Compile to compile a regular expression into an object#split () method, is the splitp = re.compile (R ' \d+ ') a_str = ' One1two2three3foure4 ' #把p的正则当成分隔符, The string is cut wi

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 =

Writing code today, when writing to Zhengze, encountered a pit, which is the FindAll () function under the RE module.Below I will combine the code to recordImportrestring="ABCDEFG acbdgef ABCDGFE cadbgfe"#the difference between parentheses and without parentheses#with no parenthesesRegex=re.compile ("((\w+) \s+\w+)")Print(Regex.findall (string))#output: [(' ABCDEFG acbdgef ', ' ABCDEFG '), (' Abcdgfe cadbgf

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

(– 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

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

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

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

In this article we'll look at the knowledge of python regular Expressions , some of whom may have just come into contact with the programming language of Python, not particularly in this respect, and in the next article will take you to learn about the expressions in the regular expression Python findall function .

(text2):... print (' Yes ').. else:... print (' No ')...No4. Using the FindAll () methodMatch () always starts from the string to match, if you want to find the pattern where any part of the string appears, use the FindAll () method instead. Like what:>>> Text = ' Today is 11/27/2012. Pycon starts 3/13/2013. '>>> Datepat.findall (text)[' 11/27/2012 ', ' 3/13/2013 ']5: Group () method to capture groupingwhe

This article mainly introduces the Python regular expression replacement string function re. sub usage, combined with the instance form analysis of the regular expression replacement string function re. sub functions and simple use methods have some reference value. if you need sub functions, refer to the example in th

Python Regular Expression replacement string function re. sub usage example, pythonre. sub This example describes how to use the Python Regular Expression replacement string function re. sub. We will share this with you for your

This example describes Python's re module application. is a very important application technique. Share to everyone for your reference. The specific methods are as follows: Import Re # match_object = Re.match (' foo ', ' foo ') if Match_object is not none:print type (match_object) print mat Ch_object.group () # match_object = Re.match (' foo ', ' FOOABV ')

)# Alex_jack_rain_jinxin_|mack-oldboyS62 = Re.sub (' \d+ ',' _ ', S6,Count=2)Print (S62)# Alex_jack_rain31jinxin50|mack-oldboyS7 =' 9-2*5/3+7/3*99/4*2998+10*568/14 'S71 = Re.split (' [-\*/+] ', S7)Print (S71)# [' 9 ', ' 2 ', ' 5 ', ' 3 ', ' 7 ', ' 3 ', ' 99 ', ' 4 ', ' 2998 ', ' 10 ', ' 568 ', ' 14 ']S72 = Re.split (' [-\*/+] ', S7,maxsplit=2)Print (S72)# [' 9 ', ' 2 ', ' 5/3+7/3*99/4*2998+10*568/14 ']# Fullmatch compile compile to improve efficiencyPattern = Re.compile (' \[email protected]\w+\