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#[\u4e00-\u9fa5]匹配中文，[^\u4e00-\u9fa5]匹配非中文
#py2
t = re.compile(r'[\u4e00-\u9fa5]')
re.search(t,text)
#py3
ch = re.compile(u'[\u4e00-\u9fa5]+')
words = ch.search(line.strip())
word = words.group()- 分割
t = re.compile(r'[。，;；、]')
sent_list = t.split(text)- 替换
t = re.compile(r'[。，;；、]')
replacedStr = re.sub(t, "222", text)