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输入样例

#1: welcome @tom to the2 Basic-building...

输出样例

welcome to the Basicbuilding

代码

string = input().split()#接收的字符串#["welcome","to","python"]#处理成二维列表#[["w",'e','l','c','o','m','e'],[‘t','o'],['p','y','t','h','o','n']]stringList = []for words in string:	#list（words）将一个单词从字符传转变为列表    stringList.append(list(words))#用于检测是否存在数字number = ["0","1","2","3","4","5","6","7","8","9"] #去除数字字符for words in stringList:    for i in range(len(words)):        if(words[i] in number):            words[i] = ""        #去除破折号               elif(words[i] == "-"):            words[i] = ""        #去除.（这里是有些问题的，题目要求的是去除单词末尾的...而不是简单的一个.）        elif(words[i] == "."):            words[i] = ""#去除@和#开头的单词for words in stringList:    if(words[0] == "@" or words[0] == "#"):        stringList.remove(words)#将结果保存在列表中endList = []for words in stringList:    for chara in words:    	#没用的字符替换成了“”,如果是空则不添加        if(chara is not ""):            endList.append(chara)            #print(chara,end="")    #print(" ",end="")    endList.append(" ")#开头是数字的话会出现空格，还有有些问题，自己写的代码真的是又臭又长if(endList[0]==" "):    for i in endList[1:-1]:        print(i,end="")else:    for i in endList[:-1]:        print(i,end='')

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