python字符串编码判断

来源：互联网发布：php 开源报表系统编辑：程序博客网时间：2024/04/29 22:19
def is_chinese(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(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(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(uchar):        """判断是否非汉字，数字和英文字符"""        if not (is_chinese(uchar) or is_number(uchar) or is_alphabet(uchar)):                return True        else:                return False  def B2Q(uchar):        """半角转全角"""        inside_code=ord(uchar)        if inside_code<0x0020 or inside_code>0x7e:      #不是半角字符就返回原来的字符                return uchar        if inside_code==0x0020: #除了空格其他的全角半角的公式为:半角=全角-0xfee0                inside_code=0x3000        else:                inside_code+=0xfee0        return unichr(inside_code)  def Q2B(uchar):        """全角转半角"""        inside_code=ord(uchar)        if inside_code==0x3000:                inside_code=0x0020        else:                inside_code-=0xfee0        if inside_code<0x0020 or inside_code>0x7e:      #转完之后不是半角字符返回原来的字符                return uchar        return unichr(inside_code)  def stringQ2B(ustring):        """把字符串全角转半角"""        return "".join([Q2B(uchar) for uchar in ustring])  def uniform(ustring):        """格式化字符串，完成全角转半角，大写转小写的工作"""        return stringQ2B(ustring).lower()  def string2List(ustring):        """将ustring按照中文，字母，数字分开"""        retList=[]        utmp=[]        for uchar in ustring:                if 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  if __name__=="__main__":        #test Q2B and B2Q        for i in range(0x0020,0x007F):                print Q2B(B2Q(unichr(i))),B2Q(unichr(i))          #test uniform        ustring=u'中国 人名ａ高频Ａ'        ustring=uniform(ustring)        ret=string2List(ustring)        print ret
转自：http://my.oschina.net/eonezhang/blog/125440
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