例如，當我使用unicode_string = u"Austro\u002dHungarian_gulden"unicode_string.encode("ascii", "ignore")然后它將給出以下輸出：'Austro-Hungarian_gulden'但是我正在使用一個txt文件，其中包含一組數據，如下所示：Austria\u002dHungary    Austro\u002dHungarian_guldenCocos_\u0028Keeling\u0029_Islands   Australian_dollarEl_Salvador Col\u00f3n_\u0028currency\u0029Faroe_Islands   Faroese_kr\u00f3naGeorgia_\u0028country\u0029 Georgian_lari而且，我必須使用Python中的正則表達式來處理這些數據，因此我創建了如下腳本，但是該腳本無法用字符串中的適當字符替換Unicode值。同樣地'\u002d' has appropriate character '-''\u0028' has appropriate character '(''\u0029' has appropriate character ')'用于處理文本文件的腳本：import reimport collectionsdef extract():    filename = raw_input("Enter file Name:")    in_file = file(filename,"r")    out_file = file("Attribute.txt","w+")    for line in in_file:        values = line.split("\t")        if values[1]:            str1 = ""            for list in values[1]:                list = re.sub("[^\Da-z0-9A-Z()]","",list)                list = list.replace('_',' ')                out_file.write(list)                str1 += list            out_file.write("    ")        if values[2]:            str2 = ""            for list in values[2]:                list = re.sub("[^\Da-z0-9A-Z\n]"," ",list)                list = list.replace('"','')                list = list.replace('_',' ')                out_file.write(list)                str2 += list        s1 = str1.lstrip()        s1 = str1.rstrip()        s2 = str2.lstrip()        s2 = str2.rstrip()        print s1+s2給定數據的預期輸出為：Austria-Hungary Austro-Hungarian guldenCocos (Keeling) Islands Australian dollarEl Salvador Coln (currency)FaroeIslands    Faroese krnaGeorgia (country)   Georgian lari我該怎么做？