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      3. 快速查找两个大文本文件之间的差异

        时间:2023-11-08

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                • 本文介绍了快速查找两个大文本文件之间的差异的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  问题描述

                  我有两个 3GB 的文本文件,每个文件大约有 8000 万行.并且它们共享 99.9% 的相同行(文件 A 有 60,000 个唯一行,文件 B 有 80,000 个唯一行).

                  I have two 3GB text files, each file has around 80 million lines. And they share 99.9% identical lines (file A has 60,000 unique lines, file B has 80,000 unique lines).

                  如何在两个文件中快速找到这些独特的行?是否有任何现成的命令行工具可以做到这一点?我正在使用 Python,但我想找到一种有效的 Pythonic 方法来加载文件并进行比较是不太可能的.

                  How can I quickly find those unique lines in two files? Is there any ready-to-use command line tools for this? I'm using Python but I guess it's less possible to find a efficient Pythonic method to load the files and compare.

                  欢迎提出任何建议.

                  推荐答案

                  如果顺序很重要,请尝试 comm 实用程序.如果顺序无关紧要,sort file1 file2 |uniq -u.

                  If order matters, try the comm utility. If order doesn't matter, sort file1 file2 | uniq -u.

                  这篇关于快速查找两个大文本文件之间的差异的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!

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