替换python 3中的重复单词

Question

我想取一段如下所示的文本：

Engineering will save the world from inefficiency. Inefficiency is a blight on the world and its humanity.

然后返回：

Engineering will save the world from inefficiency..is a blight on the . and its humanity.

也就是说，我想删除重复的单词并将它们替换为“。” 这就是我开始编写代码的方式：

lines= ["Engineering will save the world from inefficiency.",
        "Inefficiency is a blight on the world and its humanity."]

def solve(lines):    
    clean_paragraph = []    
    for line in lines:    
        if line not in str(lines):
            clean_paragraph.append(line)
        print (clean_paragraph)    
        if word == word in line in clean_paragraph:
            word = "."              
     return clean_paragraph

我的逻辑是创建一个包含所有最差字符串的列表，并将每一个添加到一个新列表中，然后，如果该单词已经在列表中，则将其替换为“.”。我的代码返回 []。任何建议将不胜感激！

Answer 1

另一种方法是：

lines_test = 'Engineering will save the world from inefficiency. Inefficiency is a blight on the world and its humanity.'

text_array = lines_test.split(" ")
formatted_text = ''
for word in text_array:
    if word.lower() not in formatted_text:   
        formatted_text = formatted_text +' '+word
    else:
        formatted_text = formatted_text +' '+'.'

print(formatted_text)  

输出

Engineering will save the world from inefficiency. . is . blight on . . and its humanity.

Answer 2

这是执行此操作的一种方法。它用一个点替换所有重复的单词。

lines_test = (["Engineering will save the world from inefficiency.",
               "Inefficiency is a blight on the world and its humanity."])


def solve(lines):
    clean_paragraph = ""
    str_lines = " ".join(lines)
    words_lines = str_lines.replace('.', ' .').split()
    for word in words_lines:
        if word != "." and word.lower() in clean_paragraph.lower():
            word = " ."
        elif word != ".":
            word = " " + word
        clean_paragraph += word
    return clean_paragraph


print(solve(lines_test))

输出：

Engineering will save the world from inefficiency. . is . blight on . . and its humanity.

在进行比较之前，将单词或字符串转换为小写或大写（一致形式）很重要。

Answer 3

问题：

if word == word in line in clean_paragraph:

我不确定您对此有何期望，但它始终是False。这里有一些明确的括号是有益的：

if word == ((word in line) in clean_paragraph):

这会评估word in line，它可以是布尔值。但是，该值不会出现在clean_paragraph 的文本中，因此结果表达式为False。

修复

编写您要编码的循环：

for clean_line in clean_paragraph:
    for word in clean_line:

此时，您必须弄清楚您想要的变量名称是什么。您尝试让几个变量同时代表两种不同的事物（line 和 word；我修复了第一个）。

您还必须学会正确操作循环及其索引；问题的一部分是您一次编写的代码超出了您的处理能力——然而。备份，一次写一个循环，然后打印结果，这样你就知道你在做什么了。例如，以

开头

for line in lines:

    if line not in str(lines):
        print("line", line, "is new: append")
        clean_paragraph.append(line)
    else:
        print("line", line, "is already in *lines*")

我想你会在这里发现另一个问题——甚至比我发现的问题还要早。解决这个问题，然后一次只添加一两行，逐步建立你的程序（和编程知识）。当某些东西不起作用时，您知道几乎可以肯定是新线路。