# Adapted from https://naleraphael.github.io/blog/posts/devlog_create_a_builtin_frame_object/

import ctypes

P_SIZE = ctypes.sizeof(ctypes.c_void_p)
IS_X64 = P_SIZE == 8

P_MEM_TYPE = ctypes.POINTER(ctypes.c_ulong if IS_X64 else ctypes.c_uint)

ctypes.pythonapi.PyFrame_New.argtypes = (
    P_MEM_TYPE,         # PyThreadState *tstate
    P_MEM_TYPE,         # PyCodeObject *code
    ctypes.py_object,   # PyObject *globals
    ctypes.py_object    # PyObject *locals
)
ctypes.pythonapi.PyFrame_New.restype = ctypes.py_object     # PyFrameObject*

ctypes.pythonapi.PyThreadState_Get.argtypes = None
ctypes.pythonapi.PyThreadState_Get.restype = P_MEM_TYPE

def greet():
    print('hello')

frame = ctypes.pythonapi.PyFrame_New(
    ctypes.pythonapi.PyThreadState_Get(),    # thread state
    ctypes.cast(id(greet.__code__), P_MEM_TYPE),    # a code object
    globals(),    # a dict of globals
    locals()      # a dict of locals
)
print(frame)

print(frame.f_back) # <--- Segfaults