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Module pyo3::ffi

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Raw FFI declarations for Python’s C API.

This module provides low level bindings to the Python interpreter. It is meant for advanced users only - regular PyO3 users shouldn’t need to interact with this module at all.

The contents of this module are not documented here, as it would entail basically copying the documentation from CPython. Consult the Python/C API Reference Manual for up-to-date documentation.

§Safety

The functions in this module lack individual safety documentation, but generally the following apply:

  • Pointer arguments have to point to a valid Python object of the correct type, although null pointers are sometimes valid input.
  • The vast majority can only be used safely while the GIL is held.
  • Some functions have additional safety requirements, consult the Python/C API Reference Manual for more information.

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