pydeduplines 0.1.2

Python library for a duplicate lines removal written in C++

Python library for a duplicate lines removal written in C++

Table of Contents

• Table of Contents
• About The Project
  • Built With
  • Performance
    • CPU
    • Memory
  • Prerequisites
  • Installation
• Usage
• License
• Contact

About The Project

PyDeduplines is a library intended for deduplicating multiple files, line by line. The library is written in C++ to achieve speed and efficiency. The library also uses mimalloc allocator written by Microsoft for memory allocation efficiency. For the deduplication, the library uses a specific hash set implementation called Parallel Hashmap which is fast and memory efficient. The library is twice as fast as sort-uniq and twice as memory efficient as sort-uniq.

Built With

• mimalloc
• Parallel Hashmap

Performance

CPU

Library	Text Size	Function	Time	Improvement Factor
GNU Sort	500mb	sort -u -o output input	40.37s	1.0x
PyDeduplines	500mb	pydeduplines.deduplicate_lines(['input'], 'output')	18.54s	2.17x

Memory

Library	Text Size	Function	Peak RSS Memory (bytes)	Improvement Factor
GNU Sort	500mb	sort -u -o output input	4802100	1.0x
PyDeduplines	500mb	pydeduplines.deduplicate_lines(['input'], 'output')	2345932	2.05x

Prerequisites

In order to compile this package you should have GCC & Python development package installed.

• Fedora

sudo dnf install python3-devel gcc-c++

• Ubuntu 18.04

sudo apt install python3-dev g++-9

Installation

pip3 install PyDeduplines

Usage

import PyDeduplines

# reads files line by line as writes them into a new file only if they
# were found for the first time.
pydeduplines.deduplicate_lines(['input'], 'output')

License

Distributed under the MIT License. See LICENSE for more information.

Contact

Gal Ben David - [e-mail]

Project Link: https://github.com/intsights/PyDeduplines