def is_chinese(uchar):"""判断一个unicode是否是汉字"""if uchar >= u'\u4e00' and uchar<=u'\u9fa5':return Trueelse:return Falsedef is_number(uchar):"""判断一个unicode是否是数字"""if uchar >= u'\u0030' and uchar<=u'\u0039':return Trueelse:return Falsedef 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 Trueelse:return Falsedef 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 Trueelse:return Falsedef 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 ucharif inside_code==0x0020: #除了空格其他的全角半角的公式为:半角=全角-0xfee0inside_code=0x3000else:inside_code+=0xfee0return unichr(inside_code)def Q2B(uchar):"""全角转半角"""inside_code=ord(uchar)if inside_code==0x3000:inside_code=0x0020else:inside_code-=0xfee0if 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 ucharreturn 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:continueelse:retList.append("".join(utmp))utmp=[]else:utmp.append(uchar)if len(utmp)!=0:retList.append("".join(utmp))return retListif __name__=="__main__":#test Q2B and B2Qfor i in range(0x0020,0x007F):print Q2B(B2Q(unichr(i))),B2Q(unichr(i))#test uniformustring=u'中国 人名ａ高频Ａ'ustring=uniform(ustring)ret=string2List(ustring)print ret