re模块是python中处理正在表达式的一个模块 正则表达式知识储备:http://www.cnblogs.com/huamingao/p/6031411.html 1. match(pattern, string, flags=0) 从字符串的开头进行匹配, 匹配成功就返回一个匹配对象,匹配失败就返回None flags的几种值 X 忽略空格和注释 I 忽略大小写的区别 case-insensitive matching S...
class PrivacyFilter: def __init__(self): self.keyword_processor_case_sensitive = KeywordProcessor(case_sensitive=True) self.keyword_processor_case_insensitive = KeywordProcessor(case_sensitive=False) def file_to_list(self, filename, minimum_length=0, drop_first=1): with open(fil...
3.re.I 或者 re.IGNORECASE 功能:Perform case-insensitive matching; expressions like[A-Z]will also match lowercase letters. Full Unicode matching (such asÜmatching ü) also works unless there.ASCIIflag is used to disable non-ASCII matches. The current locale does not change the effect of this...
>>>importre>>> ret_match=re.match("c","abcde")#从字符串开头匹配,匹配到返回match的对象,匹配不到返回None>>>if(ret_match):print("ret_match:"+ret_match.group())else:print("ret_match:None") ret_match:None>>> ret_search = re.search("c","abcde")#扫描整个字符串返回第一个匹配到的...
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'...
在上述示例中,case_insensitive_replace()函数接受三个参数:原始字符串string、要替换的旧字符串old和替换的新字符串new。函数内部使用re.escape()函数来转义旧字符串中的特殊字符,并使用re.IGNORECASE标志来忽略大小写。然后使用pattern.sub()方法进行替换操作,将旧字符串替换为新字符串。 需要注意的是,使用正则表达式...
正则表达式(regular expression,简称regex),是一种字符串匹配的模式(pattern),是文本处理方面功能最强大的工具之一,主要用来完成文本的搜索、替换等操作。广泛运用于PHP、C# 、Java、C++ 、Perl 、VBScript 、Javascript、以及Python等,在代码中常简写为regex、regexp或re。
text = """Dave dave@ Steve steve@ Rob rob@ 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. 6. 7. 8. 对text使⽤fi...
I IGNORECASE Perform case-insensitive matching. L LOCALE Make \w, \W, \b, \B, dependent on the current locale. M MULTILINE "^" matches the beginning of lines (after a newline) as well as the string. "$" matches the end of lines (before a newline) as well ...
Python3将'CaseInsensitiveDict'转换为JSON的过程如下: 首先,需要导入相应的库: 代码语言:txt 复制 import json from requests.structures import CaseInsensitiveDict 然后,创建一个CaseInsensitiveDict对象: 代码语言:txt 复制 headers = CaseInsensitiveDict() headers["Content-Type"] = "application/json" headers["...