"format": "py3esourcezip", "version": "1.2.0", "python_min": "3.8", "created_at": "2025-01-15T10:00:00Z"
In the sprawling ecosystem of Python development, developers constantly encounter niche tools, libraries, and file formats that serve critical but specific roles. One such term that has begun circulating in technical forums, repository issues, and deployment pipelines is py3esourcezip . py3esourcezip
# Install dependencies into a target directory pip install --target $WORK_DIR requests pyyaml Versioning strategy Include a version.txt or METADATA.json at the root of the zip: "format": "py3esourcezip", "version": "1
Recreate the py3esourcezip using the exact target Python version. Alternatively, bundle source ( .py ) files instead of pre-compiled bytecode, and let the target Python compile them at runtime. Error: Permission denied when accessing the zip Cause: The file was created with root privileges or on a filesystem that doesn’t support execute permissions for the user running Python. Alternatively, bundle source (
| Feature | py3esourcezip (custom) | .whl (Wheel) | .pex (PEX file) | .egg (legacy) | | :--- | :--- | :--- | :--- | :--- | | | Yes (by design) | Optionally (often just bytecode) | Yes (compiled) | Maybe | | Self-executable | Only if you add __main__.py + __main__ in archive | No (needs pip install) | Yes (single file run) | No | | Portability | Python 3 only | Python 3 + specific ABI | Python 3 + OS | Python 2/3 | | Standardization | None (custom) | PEP 427 (standard) | Twitter’s PEX standard | Setuptools legacy | | Best for | Embedded systems, plugins | Distribution on PyPI | Deploying apps to servers | Legacy projects |
If you see such syntax, refer to your specific framework’s documentation. Error: Bad magic number or ImportError Cause: Python 3 bytecode ( .pyc ) compiled on one version (e.g., 3.10) is incompatible with another (e.g., 3.11).
When building your zip, ensure you include __init__.py for every package directory. Use find to verify: