Python正则表达式过滤文本

记录一下

def delete_tag(s):
   s = re.sub('\{IMG:.?.?.?\}', '', s)  # 图片
   s = re.sub(re.compile(r'[a-zA-Z]+://[^\s]+'), '', s)  # 网址
   s = re.sub(re.compile('<.*?>'), '', s)  # 网页标签
   s = re.sub(re.compile('&[a-zA-Z]+;?'), ' ', s)  # 网页标签
   s = re.sub(re.compile('[a-zA-Z0-9]*[./]+[a-zA-Z0-9./]+[a-zA-Z0-9./]*'), ' ', s)
   s = re.sub("\?{2,}", "", s)
   s = re.sub("\r", "", s)
   s = re.sub("\n", ",", s)
   s = re.sub("\t", ",", s)
   s = re.sub("(", ",", s)
   s = re.sub(")", ",", s)
   s = re.sub("\u3000", "", s)
   s = re.sub(" ", "", s)
   r4 = re.compile('\d{4}[-/]\d{2}[-/]\d{2}')  # 日期
   s = re.sub(r4, "", s)
   time = re.compile('\d{1,2}:\d{1,2}:\d{1,2}')  # 时间点,如12:24:34
   s = re.sub(time, "", s)
   time2 = re.compile('\d{1,2}:\d{1,2}')  # 时间点,如12:24
   s = re.sub(time, "", s)
   return s

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