I tested the following code:
---
import ctypes, sys 
names = """
PyRun_String
PyRun_AnyFile
PyRun_AnyFileEx
PyRun_AnyFileFlags
PyRun_SimpleString
PyRun_SimpleFile
PyRun_SimpleFileEx
PyRun_InteractiveOne
PyRun_InteractiveLoop
PyRun_File
PyRun_FileEx
PyRun_FileFlags
"""
api = ctypes.pythonapi
api2 = ctypes.PyDLL("", handle=sys.dllhandle)
for name in names.split():
    if not hasattr(api, name) or not hasattr(api2, name):
        print("MISSING NAME", name)
---

Current output:

Missing names ['PyRun_AnyFile', 'PyRun_AnyFileEx', 'PyRun_File', 'PyRun_FileEx',
 'PyRun_FileFlags', 'PyRun_InteractiveLoop', 'PyRun_InteractiveOne', 'PyRun_Simp
leFile', 'PyRun_SimpleFileEx', 'PyRun_SimpleString', 'PyRun_String']

With my PR 14142:

Missing names []