正则表达式的英文是 regular expression,通常简写为 regex、regexp 或者RE,属于计算机领域的一个概念。 正则表达式的主要作用是被用来进行文本的检索、替换或者是从一个串中提取出符合我们指定条件的子串,它描述了一种字符串匹配的模式 pattern 。 目前正则表达式已经被集成到了各种文本编辑器和文本处理工具中。 1.2 应...
['A', 'ASCII', 'DEBUG', 'DOTALL', 'I', 'IGNORECASE', 'L', 'LOCALE', 'M', 'MULTILINE', 'RegexFlag', 'S', 'Scanner', 'T', 'TEMPLATE', 'U', 'UNICODE', 'VERBOSE', 'X', '_MAXCACHE', '__all__', '__builtins__', '__cached__', '__doc__', '__file__', '_...
正则表达式对象生成:pattern = re.compile('pattern') regex.search(string[,pos[, endpos]]) regex.match(string[, pos[, endpos]]) regex.fullmatch(string[, pos[, endpos]]) regex.split(string, maxsplit=0) regex.findall(string[, pos[, endpos]]) regex.finditer(string[, pos[, endpos]]) re...
match匹配从字符串的开头匹配,regex对象match方法可以重设定开始位置和结束位置,从选定位置第一个开始匹配,不存在返回none. 返回match对象 re.search re.search(pattern, string, flags=0) regex.search(string[, pos[, endpos]]) 从头搜索直到第一个匹配,regex对象search方法可以重设定开始位置和结束位置 返回match...
RegexMatchingEventHandler:正则匹配文件; LoggingEventHandler:记录日志。 PatternMatchingEventHandler 函数原型如下 watchdog.events.PatternMatchingEventHandler(patterns=None,ignore_patterns=None,ignore_directories=False, case_sensitive=False) 该类会检查触发事件的 src_path 和 dest_path ,是否与 patterns 指定的模...
matchObject=re.search(pattern,input_str,flags=0) Example importre# Lets use a regular expression to match a date string. Ignore# the output since we are just testing if the regex matches.regex =r"([a-zA-Z]+) (\d+)"ifre.search(regex,"June 24"):# Indeed, the expression "([a-zA...
encode('cp437', errors='ignore') b'So Paulo' >>> city.encode('cp437', errors='replace') b'S?o Paulo' >>> city.encode('cp437', errors='xmlcharrefreplace') b'São Paulo' The 'utf_?' encodings handle any str. 'iso8859_1' also works for the 'São Paulo' str. 'cp...
{file = "packaging-23.1.tar.gz", hash = "sha256:a392980d2b6cffa644431898be54b0045151319d1e7ec34f0cfed48767dd334f"}, ] [[package]] name = "pathspec" version = "0.11.1" description = "Utility library for gitignore style pattern matching of file paths." optional = false python-...
compile(pattern[, flags]) -> RegexObject match(pattern, string[, flags]) -> MatchObject search(pattern, string[, flags]) -> MatchObject findall(pattern, string[, flags]) -> list of strings finditer(pattern, string[, flags]) -> iter of MatchObjects split(pattern, string[, maxsplit, ...
split() pattern = re.compile(r"The", re.I) count = 0 for word in string_list: if pattern.search(word): count += 1 print("Output #38: {0:d}".format(count)) The first line assigns the string The quick brown fox jumps over the lazy dog. to the variable string. The next ...