python re split example

: Re.sub (R ' \s ', Lambda m: ' [' + m.group (0) + '] ', text, 0); "Replace the space in the string with ' [] '. Re.split You can use Re.split to split strings, such as: Re.split (R ' \s+ ', text), and split the string into a single word list. Re.findall Re.findall can get all the matching strings in the string. such as: Re.findall (R ' \w*oo\w* ', text); Gets all the words in the string that contain ' oo '

Python re Regular Expression instance code, pythonre Regular Expression This article focuses on the reregex expressions of python. The details are as follows. Concept: Regular Expressions (generic formulas) are expressions used to express a set of strings in a concise manner. The advantage is conciseness. Application: string matching. Instance code: CODEC =

expressions in programming languages, when we want to match \ The time needs to match 4 \, \\\\ match \, because the first programming language will transfer \\\\ to \ \, and then the second time will be transferred \ \. If you use the native string r of Python to write the regular, you can write less two \, that is, R ' \ \ ' matches \,r ' \\d ' match ' \d ', R ' \d ' matches the numberUse of the 1.2 re m

Re is the most common regular expression module in Python, and the common methods include compile,match,findall,finditer,search,split,sub and so on.In some cases where the string itself is not easy to use, the RE module makes it easy to do some finding and replacing.1, compilePre-compiled regular expressions can save t

This article mainly introduces the details about join and split in Python. This article also uses an example to introduce the use of pythonjoin and split methods, for more information, see The python join and split methods. join i

press ' a ' to split ' and ' BCD ', then ' and ' BCD ' separately by ' B ' splitPrint (Re.split (' [ab] ', ' ABCD '))Replace the Re.sub () module1. Do not add parameters by default replace AllPrint (Re.sub (' A ', ' a ', ' Abcdeaedaer ', 1)) #AbcdeaedaerReplace SUBN (output can show the total number of replacements)Print (RE.SUBN (' A ', ' a ', ' Abcdeaedaer '))Re.complie () moduleCan be custom compiled, easy to call directlyObj=re.compile (' \d{2} '

Python intercepts the string using the variable [header subscript: tail subscript], you can intercept the corresponding string, where the subscript is starting from 0, can be positive or negative, subscript can be empty to take the head or tail. # example 1: string intercept str = ' 12345678 ' Print str[0:1]>> 1 # output str position 0 start to position 1 characters before print Str[1:6] >> 23456 # Ou

This article mainly introduces the Python strip () function and the split () function of the details and examples of relevant information, the need for friends can refer to the following A detailed and practical example of the Python strip () function and the split () funct

directory name is given, the output path and the empty file name Second, examples1. Common examples1>>> U ="www.doiido.com.cn"2 3 #Use default delimiter4>>>PrintU.split ()5['www.doiido.com.cn']6 7 #with "." As a delimiter8>>>PrintU.split ('.')9['www','Doiido','com','cn']Ten One #Split 0 Times A>>>PrintU.split ('.', 0) -['www.doiido.com.cn'] - the #Split once ->>>PrintU.split ('.', 1) -['www'

A Brief introduction:In essence, a regular expression (or RE) is a small, highly specialized programming language,(in Python) it is embedded in Python and is implemented through the RE module. The regular expression pattern isCompiled into a sequence of bytecode, which is then executed by a matching engine written in C

single character matches, and matches all specified characters in ""., match only one character, with only one, can represent any character？ , match one character, optional*, matches any character, is optional and does not match just one^, match the beginning of the line, if in [^] is expressed as a non-() grouping matches, matching characters within (), in group units+, match one or more, have and must have a|, when the range is matched or manipulated,Print(Re.findall ('compan (?: y|ies)','Too

Method_descriptor:split (...) S.split ([Sep [, Maxsplit]]), List of strings Return A list of the words in the string S, using Sep as the Deli Miter string. If Maxsplit is given, at most maxsplit splits be done. If Sep is no specified or is None, any whitespace string is a separator and empty strings be removed from the re Sult. (END)The string is split, the space or null character is

return a replacement string to be used. """ return _compile (pattern, flags). Sub (repl, string, count)Sub (pattern, REPL, String, count=0, flags=0)5. Split (pattern,string,maxsplit=0,flags=0)根据正则匹配分割字符串def Split (pattern, String, maxsplit=0, flags=0): "" "split the source string by the Occurrences of the pattern, returning a list containing the resu

_ pian_no_gain '>. split ('_') ['no', 'piany', 'No ', 'gain'] >>> split indicates the number of characters to be cut. >>> a = 'no _ pian_no_gain '>>>. split ('_', 2) ['no', 'piany', 'no _ gain']>. split ('_', 1) ['no', 'pian _ no_gain']>. split ('_', 0) ['no _ pian_no_gain

One, what is reThe Python re module (Regular expression regex) provides matching operations for a variety of regular expressions, using this Python-embedded language tool, although not all complex matches can be met. But enough, in most cases, to effectively analyze complex strings and extract relevant information. Python