print(f"Username: {username}, Domain: {domain}")- **使用标志**：通过传递额外的标志参数给 `re` 函数，可以增强正则表达式的灵活性。例如，`re.IGNORECASE` 忽略大小写，`re.MULTILINE` 使 `^` 和 `$` 匹配每一行的开头和结尾。case_insensitive_match = re.search(r'the', text, re.IGNORECASE)pr...
I 忽略大小写的区别 case-insensitive matching S . 匹配任意字符,包括新行 def match(pattern, string, flags=0):"""Try to apply the pattern at the start of the string, returning a match object, or None if no match was found."""return _compile(pattern, flags).match(string) 2. search(pat...
X 忽略空格和注释 I 忽略大小写的区别 case-insensitive matching S . 匹配任意字符,包括新行 match(pattern, string, flags=0) 2. search(pattern, string, flags=0) 浏览整个字符串去匹配第一个,未匹配成功返回None search(pattern, string, flags=0) 3. findall(pattern, string, flags=0) match和search...
该对象总是有值的,在使用match()或者search()函数时,如果匹配不成功,会返回None。可以通过if语句进行测试: Match objects always have a boolean value ofTrue.Sincematch()andsearch()returnNonewhen there is no match, you can test whether there was a match with a simpleifstatement: match=re.search(pa...
Just join the word_list with | as delimiter. (?i) case-insensitive modifier helps to do a case-insensitive match. for line in shakes: if re.search(r"(?i)"+'|'.join(word_lst), line): print line, Example: >>> f = ['hello','foo','bar'] ...
When to use re.search() Search vs. findall Regex search groups or multiple patterns Search multiple words using regex Case insensitive regex search How to usere.search() Before moving further, let’s see the syntax of it. Syntax re.search(pattern, string, flags=0) ...
compile(pattern,re.IGNORECASE) #re.IGNORECASE 忽略大小写 print 'Text: \n %r' % text print 'Pattern:\n %s' % pattern print 'Case-sensitive:' for match in with_case.findall(text): print ' %r' % match print 'Case-insensitive:' for match in whitout_case.findall(text): print ' %r'...
text = """Dave dave@google.com Steve steve@gmail.com Rob rob@gmail.com Ryan ryan@yahoo.com """ pattern = r'[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}' # re.IGNORECASE makes the regex case-insensitive regex = re.compile(pattern, flags=re.IGNORECASE) ...
text = """Dave dave@google.com Steve steve@gmail.com Rob rob@gmail.com Ryan ryan@yahoo.com """ pattern = r'[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}' # re.IGNORECASE makes the regex case-insensitive regex = re.compile(pattern, flags=re.IGNORECASE) 1. 2. 3. 4. 5....
Specifying re.I makes the search case insensitive, so [a-z]+ matches the entire string.re.Mre.MULTILINECauses start-of-string and end-of-string anchors to match at embedded newlines.By default, the ^ (start-of-string) and $ (end-of-string) anchors match only at the beginning and ...