How do I properly use Python's C API and exceptions?

If I do something like: ``` >>> x = int(1,2,3,4,5) ``` I immediately get a fatal error (one that would end program execution if it was in a pre-written script) ``` Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: int() takes at most 2 arguments (5 given) ``` and `x` remains undefined: ``` >>> x Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'x' is not defined ``` How would I go about implementing that in Python's C API? I found some documentation for it, but I am not sure that I know how to use it correctly. Here is what I have been trying: Print: ``` if(something) { PyErr_SetString(PyExc_TypeError, "Oh no!"); PyErr_Print(); } ``` This, unfortunately, only prints the exception and the program continues. Additionally,—if I understand it correctly—`PyErr_Print()` removes the exception from some sort of queue so Python thinks that it is handled. This is what it looks like: ``` >>> import awesomemod >>> x = awesomemod.thing() TypeError: Oh no! >>> x # x is defined because the function returns None eventually >>> ``` `PyErr_Occurred()`: ``` if(something) { PyErr_SetString(PyExc_TypeError, "Oh no!"); PyErr_Occurred(); } ``` Behavior: ``` >>> import awesomemod >>> awesomemod.thing() >>> TypeError: Oh no! >>> ``` So it does it kind of late... `return PyErr_Occurred()`: ``` if(something) { PyErr_SetString(PyExc_TypeError, "Oh no!"); return PyErr_Occurred(); } ``` Behavior: ``` >>> import awesomemod >>> awesomemod.thing() <type 'exceptions.TypeError'> >>> TypeError: Oh no! ``` This one is just really weird. What do I need to do to get the behavior of built-in functions? Edit: I tried what @user2864740 suggested in a comment and it worked perfectly! ``` if(something) { PyErr_SetString(PyExc_TypeError, "Oh no!"); return (PyObject *) NULL; } ```