Working C extension module.

Author: PetterS

.clang-format

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+BasedOnStyle: Google
+
+# For calculating line lengths.
+IndentWidth: 2
+TabWidth: 2
+
+UseTab: ForIndentation
+ColumnLimit: 100
+
+AlignOperands: true
+AllowShortFunctionsOnASingleLine: false
+BinPackArguments: false
+BinPackParameters: false
+BreakBeforeBinaryOperators: NonAssignment
+ConstructorInitializerAllOnOneLineOrOnePerLine: true
+Standard: Cpp11

.gitignore

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+__pycache__
+build

.style.yapf

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+# YAPF can be customized.
+# https://github.com/google/yapf#knobs
+
+[style]
+based_on_style = pep8
+column_limit = 100

Makefile

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+
+test: install
+	python3 -m unittest
+
+install: build
+	python3 setup.py install --user
+
+build: Makefile module.c
+	python3 setup.py build
+
+format:
+	python3 -m yapf -i -r --style .style.yapf  .
+	clang-format-7 -i module.c

module.c

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+#include <Python.h>
+
+static PyObject *test(PyObject *self, PyObject *args) {
+	return Py_BuildValue("i", 42);
+}
+
+struct module_state {};
+
+static PyMethodDef myextension_methods[] = {{"test", (PyCFunction)test, METH_NOARGS, NULL},
+                                            {NULL, NULL}};
+
+static struct PyModuleDef moduledef = {PyModuleDef_HEAD_INIT,
+                                       "quickjs",
+                                       NULL,
+                                       sizeof(struct module_state),
+                                       myextension_methods,
+                                       NULL,
+                                       NULL,
+                                       NULL,
+                                       NULL};
+
+PyMODINIT_FUNC PyInit__quickjs(void) {
+	return PyModule_Create(&moduledef);
+}

quickjs/__init__.py

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+import _quickjs
+
+
+def test():
+    return _quickjs.test()

setup.py

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+from distutils.core import setup, Extension
+
+_quickjs = Extension('_quickjs', sources=['module.c'])
+
+setup(name='quickjs',
+      version='1.0',
+      description='Wrapping the quickjs C library.',
+      packages=["quickjs"],
+      ext_modules=[_quickjs])

test_quickjs.py

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+import unittest
+
+import quickjs
+
+
+class LoadModule(unittest.TestCase):
+    def test_42(self):
+        self.assertEqual(quickjs.test(), 42)