Update pybind11 and flake8 fixes

docs/conf.py

@@ -42,7 +42,7 @@
 
 autosummary_generate = True
 
-breathe_projects = { "python_cpp_example": "_build/doxygenxml/" }
+breathe_projects = {"python_cpp_example": "_build/doxygenxml/"}
 breathe_default_project = "python_cpp_example"
 breathe_domain_by_extension = {'hpp': 'cpp'}
 
@@ -183,6 +183,3 @@ def generate_doxygen_xml(app):
 def setup(app):
     """Add hook for building doxygen xml when needed"""
     app.connect("builder-inited", generate_doxygen_xml)
-
-
-

setup.py

@@ -3,14 +3,12 @@
 import os
 import re
 import sys
-import sysconfig
 import platform
 import subprocess
 
 from distutils.version import LooseVersion
 from setuptools import setup, Extension, find_packages
 from setuptools.command.build_ext import build_ext
-from setuptools.command.test import test as TestCommand
 from shutil import copyfile, copymode
 
 
@@ -100,7 +98,7 @@ def copy_test_file(self, src_file):
     description='A hybrid Python/C++ test project',
     long_description='',
     packages=find_packages('src'),
-    package_dir={'':'src'},
+    package_dir={'': 'src'},
     ext_modules=[CMakeExtension('python_cpp_example/python_cpp_example')],
     cmdclass=dict(build_ext=CMakeBuild),
     test_suite='tests',

src/python_cpp_example/bindings.cpp

@@ -3,8 +3,8 @@
 
 namespace py = pybind11;
 
-PYBIND11_PLUGIN(python_cpp_example) {
-  py::module m("python_cpp_example", R"doc(
+PYBIND11_MODULE(python_cpp_example, m) {
+  m.doc() = R"doc(
         Python module
         -----------------------
         .. currentmodule:: python_cpp_example
@@ -13,7 +13,7 @@ PYBIND11_PLUGIN(python_cpp_example) {
 
            add
            subtract
-    )doc");
+    )doc";
 
   m.def("add", &add, R"doc(
         Add two numbers
@@ -26,6 +26,4 @@ PYBIND11_PLUGIN(python_cpp_example) {
 
         Some other information about the subtract function.
     )doc");
-
-  return m.ptr();
-}
+}

src/python_cpp_example/hello.py

@@ -1,3 +1,3 @@
 
 def say_hello():
-    print("Hello world!")
+    print("Hello world!")

tests/math_test.py

@@ -9,4 +9,4 @@ def test_subtract(self):
         self.assertEqual(python_cpp_example.subtract(1, 1), 0)
 
 if __name__ == '__main__':
-    unittest.main()
+    unittest.main()