Feature or enhancement

PyObject_HasAttrString is implemented in terms ofPyObject_GetAttrString /PyErr_Clear.
for non-existing attributes, there's significant overhead from creating an error only to clear it later.
this can be optimized by implementing it in terms ofPyObject_HasAttr.

microbenchmark

python -m pyperf timeit -s 'import _testcapihasattr_string = _testcapi.hasattr_stringclass A:  def __init__(self):    self.attr = 1a = A()' 'hasattr_string(a, "noattr")'.....................Mean +- std dev: 487 ns +- 7 ns

Linked PRs

• gh-104078: Improve performance of PyObject_HasAttrString #104079