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…signature Add a note to the --without-doc-strings documentation explaining that disabling docstrings also prevents inspect.signature() from retrieving signatures for built-in functions and methods implemented in C, since those signatures are embedded in their docstrings by Argument Clinic.
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February 12, 2026 13:25
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Summary
Adds a note to the
--without-doc-stringsconfigure option documentation explaining that disabling docstrings also preventsinspect.signature()from retrieving signatures for built-in functions and methods implemented in C.This happens because signatures for C builtins are embedded in their docstrings via the Argument Clinic tool (
__text_signature__attribute). When docstrings are stripped, the signature metadata is lost.Changes
.. note::box toDoc/using/configure.rstunder--without-doc-stringsinspect.signature(),help(), and third-party framework impact\n- Links to the Argument Clinic documentation in the devguideTesting
len.__text_signature__attribute exists in normal builds and would beNonewithout doc strings📚 Documentation preview 📚: https://cpython-previews--144746.org.readthedocs.build/