Python: 将字符串与文件合并

Question

我有一个这样的文本文件：

2014-12-22 10:55:19 1 https://whosebug.com/ Howdy, this is yet another post... this one might contain a\nline break or two

2014-12-07 12:02:49 https://whosebug.com/ Hi this is my 2nd post

2014-12-02 12:18:02 https://whosebug.com/ Hello this is my first post

我想将它与一个可能不包含所有先前信息的字符串合并
字符串：

2015-01-22 17:05:52 https://whosebug.com/ This is going to be my final post! Bye

2014-12-22 10:55:19 https://whosebug.com/ Howdy, this is yet another post... this one might contain a\nline break or two

2014-12-07 12:02:49 https://whosebug.com/ Hi this is my 2nd post

我需要我的文本文件包含 4 个 unique 条目。我最初的直觉是用白色 space 拆分文件，然后用白色 space 拆分字符串，然后执行以下操作：

if stringEntry not in fileEntry:
    prepend stringEntry to myFile

我相信一定有更好的方法来做到这一点，如果您有任何想法请告诉我。

Answer 1

如果是我，我会将所有字符串放入一个列表中，检查以确保字符串不存在，然后再写入最终输出文件。

    #! /usr/bin/python

    f = open('files.txt')
    o = open('output.txt', 'w')
    strings = []

    for line in f:
        if line not in strings: strings.append(line)

    #I am splitting by newline, you may also be able to split by space, but depends on the string stucture.
    some_string = """line1\nline2\nline3\n"""

    elements = some_string.split('\n')
    for each in elements:
        if each not in strings:
            strings.append(each + '\n')

    for each in strings:
        o.write(each)

Python: 将字符串与文件合并

Python: Merging a string with a file

python

string

file

merge