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protobuf-py-pure

protobuf-py-pure is the pure Python implementation of protobuf-py, an ergonomic and modern Protobuf library for Python. It contains the entire runtime, including the base types, serialization, and the pre-generated well-known types, and has no compiled code and no third-party dependencies.

Most users should depend on protobuf-py instead. It installs this package along with protobuf-py-ext, a native extension written in Rust that accelerates encoding and decoding on the platforms it is published for, falling back to this package everywhere else.

Depend on protobuf-py-pure directly when you need a pure Python installation with the same behavior on every platform, for example in environments you do not control or when a compiled extension is not acceptable such as WebAssembly.

$ uv add protobuf-py-pure

See the protobuf-py documentation for installation, a quickstart, and the full feature list.

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