tools_language.py

class tools_language:
    def __init__(self):
        pass

    def is_chinese(self, uchar):
        """判断一个unicode是否是汉字"""
        if uchar >= u'\u4e00' and uchar<=u'\u9fa5':
            return True
        else:
            return False

    def is_number(self, uchar):
        """判断一个unicode是否是数字"""
        if uchar >= u'\u0030' and uchar<=u'\u0039':
            return True
        else:
            return False
            
    def is_alphabet(self, uchar):
        """判断一个unicode是否是英文字母"""
        if (uchar >= u'\u0041' and uchar<=u'\u005a') or (uchar >= u'\u0061' and uchar<=u'\u007a'):
            return True
        else:
            return False

    def is_other(self, uchar):
        """判断是否非汉字，数字和英文字符"""
        if not (self.is_chinese(uchar) or self.is_number(uchar) or self.is_alphabet(uchar)):
            return True
        else:
            return False

    def B2Q(self, uchar):
        """半角转全角"""
        inside_code=ord(uchar)
        #不是半角字符就返回原来的字符
        if inside_code<0x0020 or inside_code>0x7e:
            return uchar
        #除了空格其他的全角半角的公式为:半角=全角-0xfee0
        if inside_code==0x0020:
            inside_code=0x3000
        else:
            inside_code+=0xfee0
        return unichr(inside_code)

    def Q2B(self, uchar):
        """全角转半角"""
        inside_code=ord(uchar)
        if inside_code==0x3000:
            inside_code=0x0020
        else:
            inside_code-=0xfee0
        #转完之后不是半角字符返回原来的字符
        if inside_code<0x0020 or inside_code>0x7e:
            return uchar
        return unichr(inside_code)

    def stringQ2B(self, ustring):
        """把字符串全角转半角"""
        return "".join([self.Q2B(uchar) for uchar in ustring])
        
    def uniform(self, ustring):
        """格式化字符串，完成全角转半角，大写转小写的工作"""
        return self.stringQ2B(ustring).lower()

    def string2List(self, ustring):
        """将ustring按照中文，字母，数字分开"""
        retList=[]
        utmp=[]
        for uchar in ustring:
            if self.is_other(uchar):
                if len(utmp)==0:
                    continue
                else:
                    retList.append("".join(utmp))
                    utmp=[]
            else:
                utmp.append(uchar)
        if len(utmp)!=0:
            retList.append("".join(utmp))
        return retList

    def has_chinese(self, ustring):
        ustring_lower = ustring.lower()
        for uchar in ustring_lower:
            if self.is_chinese(uchar):
                return True
        return False

if __name__ == "__main__":
    hello = tools_language()
    ustring = [u'中文lk', 'so what']
    for item in ustring:
        print (hello.has_chinese(item))