Backport of zipfile Python 3.9 to Python 2.7 with some enhancements
Project description
[![PyPI](https://img.shields.io/pypi/v/zipfile39)](https://pypi.org/project/zipfile39/)
## zipfile39
- Backport of zipfile Python 3.9 (especially caae717) to older Python including Python 2.7.
This means Python 2.7 can use zf.open(name, ‘w’).
Uses backports.lzma for ZIP_LZMA (method 14) Python2 handler.
- Introduces ZIP_DEFLATED64 (method 9), ZIP_DCLIMPLODED (method 10), ZIP_ZSTANDARD(method 93), ZIP_XZ (method 95) and ZIP_PPMD (method 98) handlers.
ZIP_ZSTANDARD Python2 uses zstandard 0.14.1 (the last compatible version).
isal / pyppmd / zipfile_deflate64 Python2 use my own backport.
- If isal is installed:
crc32 and inflation are accelerated automatically.
ZIP_DEFLATED compresslevel -10, -11, -12 and -13 are available, which correspond to isal compression level 0, 1, 2 and 3.
- If slz is installed:
ZIP_DEFLATED compresslevel -21 is available.
- If codecs7z is installed:
ZIP_DEFLATED/ZIP_BZIP2 compresslevel 11 - 19 are available. Enjoy 7-zip’s ultimate compression on Python.
### Requisites
- Installation requisites:
[pathlib2](https://pypi.org/project/pathlib2/) (Python2 only)
[contextlib2](https://pypi.org/project/contextlib2/) (Python2 only)
- Optional requisites:
[backports.lzma](https://pypi.org/project/backports.lzma/) (Python2 only)
[dclimplode](https://pypi.org/project/dclimplode/)
[zstandard](https://pypi.org/project/zstandard/)
- [isal](https://pypi.org/project/isal/)
- Python2 need python -m pip install git+https://github.com/cielavenir/python-isal-py2@0.11.0-py2
(now this branch support macOS as well)
Also see https://github.com/cielavenir/python-isal-py2/releases/tag/v0.11.1-py2
[codecs7z](https://pypi.org/project/codecs7z/)
- [pyppmd](https://pypi.org/project/pyppmd/)
Python2 need python -m pip install git+https://github.com/cielavenir/pyppmd-py2@py2
Also see https://github.com/cielavenir/pyppmd-py2/releases/tag/v0.17.0.1
- [zipfile_deflate64](https://pypi.org/project/zipfile_deflate64/)
Need 0.2.0 or later.
Python2 need python -m pip install git+https://github.com/cielavenir/zipfile-deflate64@py2
Also see https://github.com/cielavenir/zipfile-deflate64/releases/tag/v0.2.0.4
- Test requisites:
All optional requisites
[backports.tempfile](https://pypi.org/project/backports.tempfile/) (Python2 only)
[funcsigs](https://pypi.org/project/funcsigs/) (Python2 only)
### Legal
- I’m not sure about the license term when pyppmd / codecs7z is loaded (I’m not lawyer though).
For pyppmd, note that PPMd code itself is public domain. See https://github.com/miurahr/pyppmd/issues/5#issuecomment-892280467 for detail.
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