Cython Scoped Enum Example

enum_test.hpp

namespace foo {
    enum class bar : int {
        spam,
        cheese,
        parrot
    };
}

enum_test.pyx

# cython: profile=False
# distutils: language = c++
# cython: embedsignature = True
# cython: language_level = 3

cdef extern from "enum_test.hpp" namespace "foo" nogil:
    ctypedef enum bar:
        spam "foo::bar::spam"
        cheese "foo::bar::cheese"
        parrot "foo::bar::cheese"

cdef void f(bar arg):
    pass

f(bar.spam)

setup.py

from setuptools import setup, Extension
from Cython.Build import cythonize

ext = cythonize(
    [
        Extension(
            'enum_test',
            sources=['enum_test.pyx'],
            depends=['enum_test.pyx'],
            language='c++',
            extra_compile_args=["-std=c++14"],
        )
    ]
)

setup(name='enum_test',
      ext_modules = ext,
      zip_safe=False)