mirror of https://github.com/python/cpython
gh-119786: Replace a Sphinx role with a link to `Python/errors.c` (#124990)
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@ -190,5 +190,6 @@ Exception Chaining Implementation
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[Exception chaining](https://docs.python.org/dev/tutorial/errors.html#exception-chaining)
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refers to setting the ``__context__`` and ``__cause__`` fields of an exception as it is
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being raised. The ``__context__`` field is set by ``_PyErr_SetObject()`` in
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:cpy-file:`Python/errors.c` (which is ultimately called by all ``PyErr_Set*()`` functions).
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[Python/errors.c](https://github.com/python/cpython/blob/main/Python/errors.c)
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(which is ultimately called by all ``PyErr_Set*()`` functions).
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The ``__cause__`` field (explicit chaining) is set by the ``RAISE_VARARGS`` bytecode.
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