Addition of missing file required for PyKX Compilation

src/pykx/.gitignore

@@ -1,5 +1,6 @@
 # Auto-generated files
 *.c
+!_pykx_helpers.c
 !_numpy.c
 !python.c
 !pykx.c

src/pykx/_pykx_helpers.c

@@ -0,0 +1,35 @@
+#define PY_SSIZE_T_CLEAN
+#include <assert.h>
+#include <stddef.h>
+#include <string.h>
+#include <Python.h>
+
+
+static PyObject* clear_all_errors(PyObject* self, PyObject* args) {
+    PyErr_Clear();
+    Py_RETURN_NONE;
+}
+
+
+static PyMethodDef _HelperMethods[] = {
+    {"clean_errors", clear_all_errors, METH_NOARGS, "Clean the python error state."},
+    {NULL, NULL, 0, NULL} // Sentinel
+};
+
+
+static struct PyModuleDef _helpermodule = {
+    PyModuleDef_HEAD_INIT,
+    "_pykx_helpers",// Module name.
+    NULL,           // Module documentation; may be NULL.
+    -1,             // Size of per-interpreter state of the module, or -1 if the module keeps state in global variables.
+    _HelperMethods,  // Module methods.
+    NULL,           // Module slots.
+    NULL,           // A traversal function to call during GC traversal of the module object.
+    NULL,           // A clear function to call during GC clearing of the module object.
+    NULL            // A function to call during deallocation of the module object.
+};
+
+
+PyMODINIT_FUNC PyInit__pykx_helpers(void) {
+    return PyModule_Create(&_helpermodule);
+}