python根据条件替换单词

Question

在标准输入中，我提供以下文件：

    #123     595739778       "neutral"       Won the match #getin
    #164     595730008       "neutral"      Good girl

数据#2 如下所示：

    labels 1 0 -1
    -1 0.272653 0.139626 0.587721
    1 0.0977782 0.0748234 0.827398

我想看看它在 data#2 文件中的 -1 是否替换为负数，1 然后是正数，0 然后是中性

以下是我的问题：

1. 从第 2 行的 data#2 文件开始
   
2. 我遇到了更换问题。我想像下面那样替换，但它显示一个错误，它需要 1 个参数，但我已经有 2 个参数。

3. 如果我这样做，如下所示（注意打印语句）：

   if binary == "-1":
     senti = str.replace(senti.strip('"'),"negative")
   elif binary == "1":
     senti = str.replace(senti.strip('"'),"positive")
   elif binary == "0":
     senti = str.replace(senti.strip('"'),"neutral")
   print id, "\t", num, "\t", senti, "\t", sent
   

   但如果我这样做（注意打印），那么它不会进入“如果条件”：

   if binary == "-1":
      senti = str.replace(senti.strip('"'),"negative")
   elif binary == "1":
      senti = str.replace(senti.strip('"'),"positive")
   elif binary == "0":
      senti = str.replace(senti.strip('"'),"neutral")
   

   打印id, "\t", num, "\t", senti, "\t", 发送

那我该如何打印。 我得到的输出： #123 595739778 “中立”赢得比赛#getin #164 595730008 “中性”好女孩

 output expected (replace just replaces the negative, positive & neutral as per data# file:

    #123     595739778       negative       Won the match #getin
    #164     595730008       positive       Good girl

错误：

 Traceback (most recent call last):
   File "./combine.py", line 17, in <module>
     senti = str.replace(senti.strip('"'),"negative")
 TypeError: replace() takes at least 2 arguments (1 given)

这是我的代码：

for line in sys.stdin:
    (id,num,senti,sent) = re.split("\t+",line.strip())
    tweet = re.split("\s+", sent.strip().lower())
    f = open("data#2.txt","r")
    for line1 in f:
       (binary,rest,rest1,test2) = re.split("\s", line1.strip())
       if binary == "-1":
          senti = str.replace(senti.strip('"'),"negative")
       elif binary == "1":
          senti = str.replace(senti.strip('"'),"positive")
       elif binary == "0":
          senti = str.replace(senti.strip('"'),"neutral")
       print id, "\t", num, "\t", senti, "\t", sent

Answer 1

您实际上缺少替换的参数；因为它是字符串本身的一个方法，你可以这样做：

In [72]: str.replace('one','o','1')
Out[72]: '1ne'

或

In [73]: 'one'.replace('o','1')
Out[73]: '1ne'

在您的代码中，您可能想要，例如

   if binary == "-1":
      senti = senti.strip('"').replace("-1","negative")

要跳过 data#2 文件的第一行，一个选项是

f = open("data#2.txt","r")
for line1 in f.readlines()[1:]: # skip the first line
   #rest of your code here

编辑：聊天对话后，我认为您想要的更像是以下内容：

f = open("data#2.txt","r")
datalines = f.readlines()[1:]

count = 0

for line in sys.stdin:
    if count == len(datalines): break # kill the loop if we've reached the end
    (tweetid,num,senti,tweets) = re.split("\t+",line.strip())
    tweet = re.split("\s+", tweets.strip().lower())
    # grab the right index from our list
    (binary,rest,rest1,test2) = re.split("\s", datalines[count].strip())
    if binary == "-1":
        sentiment = "negative"
    elif binary == "1":
        sentiment = "positive"
    elif binary == "0":
        sentiment = "neutral"
    print tweetid, "\t", num, "\t", sentiment, "\t", tweets
    count += 1 # add to our counter