# Pending removal in Python 3.20

- `_PyObject_CallMethodId()`, `_PyObject_GetAttrId()` and `_PyUnicode_FromId()` are deprecated since 3.15 and will be removed in 3.20. Instead, use `PyUnicode_InternFromString()` and cache the result in the module state, then call `PyObject_CallMethod()` or `PyObject_GetAttr()`. (Contributed by Victor Stinner in gh-141049.)

- The `cval` field in `PyComplexObject` (gh-128813). Use `PyComplex_AsCComplex()` and `PyComplex_FromCComplex()` to convert a Python complex number to/from the C `Py_complex` representation.

- `Py_MATH_PIl` 和 `Py_MATH_El` 宏。