Code Objects

Code objects are a low-level detail of the CPython implementation. Each one represents a chunk of executable code that hasn’t yet been bound into a function.

PyCodeObject
The C structure of the objects used to describe code objects. The fields of this type are subject to change at any time.
PyTypeObject PyCode_Type
This is an instance of PyTypeObject representing the Python code type.
int PyCode_Check(PyObject *co)
Return true if co is a code object.
int PyCode_GetNumFree(PyObject *co)
Return the number of free variables in co.
PyCodeObject *PyCode_New(int argcount, int nlocals, int stacksize, int flags, PyObject *code, PyObject *consts, PyObject *names, PyObject *varnames, PyObject *freevars, PyObject *cellvars, PyObject *filename, PyObject *name, int firstlineno, PyObject *lnotab)
Return a new code object. If you need a dummy code object to create a frame, use PyCode_NewEmpty() instead. Calling PyCode_New() directly can bind you to a precise Python version since the definition of the bytecode changes often.
int PyCode_NewEmpty(const char *filename, const char *funcname, int firstlineno)
Return a new empty code object with the specified filename, function name, and first line number. It is illegal to exec or eval() the resulting code object.