1、保留中文（將非中文替換為" "）

def filterCharacter(s):
    import re
    r1 = re.sub(u"[^\u4e00-\u9fa5]", " ", s)
    return r1

2、連續空格替換為單空格

def filterCharacter(s):
    import re
    r1 = re.sub(r"\s{1,}", " ", r1)
    return r1

3、去掉標點數字等資訊

def filterCharacter(s):
    import re
    r1 = re.sub("[A-Za-z0-9\[\`\~\!\@\#\$\^\&\*\(\)\=\|\{\}\'\:\;\'\,\[\]\.\<\>\/\?\~\！\@\#\\\&\*\%]", "", s)
    return r1
 

<<<未完待續