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* - add "lz77_compressor" class with compress and decompress methods using LZ77 compression algorithm * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * - use "list" instead "List", formatting * - fix spelling * - add Python type hints * - add 'Token' class to represent triplet (offset, length, indicator) * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * - add test, hange type rom List to list * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * - remove extra import * - remove extra types in comments * - better test * - edit comments * - add return types * - add tests for __str__ and __repr__ * Update lz77.py * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> Co-authored-by: Christian Clauss <cclauss@me.com> |
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| .. | ||
| image_data | ||
| __init__.py | ||
| burrows_wheeler.py | ||
| huffman.py | ||
| lempel_ziv_decompress.py | ||
| lempel_ziv.py | ||
| lz77.py | ||
| peak_signal_to_noise_ratio.py | ||
| README.md | ||
| run_length_encoding.py | ||
Compression
Data compression is everywhere, you need it to store data without taking too much space. Either the compression lose some data (then we talk about lossy compression, such as .jpg) or it does not (and then it is lossless compression, such as .png)
Lossless compression is mainly used for archive purpose as it allow storing data without losing information about the file archived. On the other hand, lossy compression is used for transfer of file where quality isn't necessarily what is required (i.e: images on Twitter).