[](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/) or [pyzstd](https://pypi.org/project/pyzstd/) (Py2 unavailable)
- [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
- [slz](https://pypi.org/project/slz/)
- [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
- or [inflate64](https://pypi.org/project/inflate64/) (Py2 unavailable)
- Test requisites:
- All optional requisites
- [backports.tempfile](https://pypi.org/project/backports.tempfile/) (Python2 only)
- [funcsigs](https://pypi.org/project/funcsigs/) (Python2 only)
### Wheels
Some dependencies need complex build procedures. For your sake those wheels are published in actions CI.
### Legal
- I'm not sure about the license term when pyppmd / codecs7z / inflate64 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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"description": "[](https://pypi.org/project/zipfile39/)\n\n## zipfile39\n\n- Backport of zipfile Python 3.9 (especially caae717) to older Python including **Python 2.7.**\n - This means Python 2.7 can use `zf.open(name, 'w')`.\n- Uses backports.lzma for ZIP_LZMA (method 14) Python2 handler.\n- Introduces ZIP_DEFLATED64 (method 9), ZIP_DCLIMPLODED (method 10), ZIP_ZSTANDARD(method 93), ZIP_XZ (method 95) and ZIP_PPMD (method 98) handlers.\n - ZIP_ZSTANDARD Python2 uses zstandard 0.14.1 (the last compatible version).\n - isal / pyppmd / zipfile_deflate64 Python2 use my own backport.\n- If isal is installed:\n - crc32 and inflation are accelerated automatically.\n - ZIP_DEFLATED compresslevel -10, -11, -12 and -13 are available, which correspond to isal compression level 0, 1, 2 and 3.\n- If slz is installed:\n - ZIP_DEFLATED compresslevel -21 is available.\n- If codecs7z is installed:\n - ZIP_DEFLATED/ZIP_BZIP2 compresslevel 11 - 19 are available. Enjoy 7-zip's ultimate compression on Python.\n\n### Requisites\n\n- Installation requisites:\n - [pathlib2](https://pypi.org/project/pathlib2/) (Python2 only)\n - [contextlib2](https://pypi.org/project/contextlib2/) (Python2 only)\n- Optional requisites:\n - [backports.lzma](https://pypi.org/project/backports.lzma/) (Python2 only)\n - [dclimplode](https://pypi.org/project/dclimplode/)\n - [zstandard](https://pypi.org/project/zstandard/) or [pyzstd](https://pypi.org/project/pyzstd/) (Py2 unavailable)\n - [isal](https://pypi.org/project/isal/)\n - Python2 need `python -m pip install git+https://github.com/cielavenir/python-isal-py2@0.11.0-py2`\n - (now this branch support macOS as well)\n - Also see https://github.com/cielavenir/python-isal-py2/releases/tag/v0.11.1-py2\n - [slz](https://pypi.org/project/slz/)\n - [codecs7z](https://pypi.org/project/codecs7z/)\n - [pyppmd](https://pypi.org/project/pyppmd/)\n - Python2 need `python -m pip install git+https://github.com/cielavenir/pyppmd-py2@py2`\n - Also see https://github.com/cielavenir/pyppmd-py2/releases/tag/v0.17.0.1\n - [zipfile_deflate64](https://pypi.org/project/zipfile_deflate64/)\n - Need 0.2.0 or later.\n - Python2 need `python -m pip install git+https://github.com/cielavenir/zipfile-deflate64@py2`\n - Also see https://github.com/cielavenir/zipfile-deflate64/releases/tag/v0.2.0.4\n - or [inflate64](https://pypi.org/project/inflate64/) (Py2 unavailable)\n- Test requisites:\n - All optional requisites\n - [backports.tempfile](https://pypi.org/project/backports.tempfile/) (Python2 only)\n - [funcsigs](https://pypi.org/project/funcsigs/) (Python2 only)\n\n### Wheels\n\nSome dependencies need complex build procedures. For your sake those wheels are published in actions CI.\n\n### Legal\n\n- I'm not sure about the license term when pyppmd / codecs7z / inflate64 is loaded (I'm not lawyer though).\n - 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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