[英]Faster way to remove duplicates from a very large text file in Python?
[英]The optimal way to remove duplicates from a list of sorted very large files (200G each)?
我每個都有一系列大文件(200 G),每個文件都經過排序,並包含如下所示的重復項:
50.21.180.100|a.ac
50.21.180.100|a.ac
50.21.180.100|a.ac
50.21.180.100|a.ac
50.21.180.100|a.ac
50.21.180.100| b.ac
50.21.180.100| b.ac
50.21.180.100|b.ac
50.21.180.100|b.ac
50.21.180.100|b.ac
50.21.180.100| c.ac
50.21.180.100| c.ac
50.21.180.100|c.ac
50.21.180.100|c.ac
50.21.180.100|c.ac
50.21.180.100|c.ac
50.21.180.100| d.ac
預期產量:
50.21.180.100|a.ac
50.21.180.100|b.ac
50.21.180.100|c.ac
50.21.180.100|d.ac
是否有任何機構建議刪除這些重復項的最佳方法(在時間和記憶方面)? 是Linux bash還是Python或其他語言?
首先刪除空間,然后運行uniq:
cat infile.txt | tr -d " " | uniq > outfile.txt
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