Python-替换文本文件中的重复信息

Question

我目前正在开发一个程序，将文本文件中的每个单词放入 xlsxwriter。这意味着我必须拆分线。

我的问题是我必须删除重复的信息，直到一行中第一个不同的元素。我想不出如何解决它。

文本示例

Dave likes fresh green apples 
Dave likes fresh green peppers 
Dave hates fresh green apples 
Dave hates rotten green apples 
Jane likes fresh green apples

xlsxwriter 中的期望结果

    C1    C2    C3    C4    C5 
R1 Dave likes fresh  green apples 
R2  X     X     X      X   peppers 
R3  X   hates fresh  green apples 
R4  X     X   rotten green apples 
R5 Jane likes fresh  green apples

谢谢

Answer 1

接受挑战。

这样的事情怎么样：

test.txt

Dave likes fresh green apples 
Dave likes fresh green peppers 
Dave hates fresh green apples 
Dave hates rotten green apples 
Jane likes fresh green apples
Dave likes fresh green watermelon
Jane likes fresh green peppers

这里是我的第一个想法（让它发挥作用并记录在我原来的 post 中）

def read_lines_with_duplicate_replace_v1(path,replace_char="X"):
    """Generator that read the lines in the file contained in path
       and for each line that start as some previous line replace each
       part that is similar with replace_char. Yield a list with the result"""
    #assume that each line has the same number of elements
    record=dict()
    with open(path) as file:
        for line in file:
            result  = line.split()
            temp = tuple(result)
            if temp[0] in record:
                key = result[0]
                result[0] = replace_char
                for i in range(1,len(result)):
                    if result[i] == record[key][i-1]:
                        result[i] = replace_char
                    else:
                        break
            record[temp[0]] = temp[1:]
            yield result

这里是第二个思路，只记得上一行

def read_lines_with_duplicate_replace_v2(path,replace_char="X"):
    """Generator that read the lines in the file contained in path
       and for each line that start as the previous line replace each
       part that is similar with replace_char. Yield a list with the result """
    #assume that each line has the same number of elements
    num_elem = 0
    previous_line = list()
    with open(path) as file:
        for line in file:
            result = line.split()
            if previous_line:
                for i in range(num_elem):
                    if result[i] == previous_line[i]:
                        result[i] = replace_char
                    else:
                        break
                previous_line[i:] = result[i:]
            else:
                previous_line.extend(result)
                num_elem = len(previous_line)
            yield result

输出：

>>> for x in read_lines_with_duplicate_replace_v1("test.txt"):
        print(*x)


Dave likes fresh green apples
X X X X peppers
X hates fresh green apples
X X rotten green apples
Jane likes fresh green apples
X likes fresh green watermelon
X X X X peppers
>>>
>>>
>>> for x in read_lines_with_duplicate_replace_v2("test.txt"):
        print(*x)


Dave likes fresh green apples
X X X X peppers
X hates fresh green apples
X X rotten green apples
Jane likes fresh green apples
Dave likes fresh green watermelon
Jane likes fresh green peppers
>>>

Python-替换文本文件中的重复信息

Python-Replacing Duplicatte information in a Text file

python

string

split

replace

xlsxwriter