First commit.

.gitignore

+*~
+~*
+*.swp
+*.swo
+*.pyc
+.DS_Store
+build/
+dist/
+*.egg-info/
+__pycache__/
+*.log
+.tox

.pre-commit-config.yaml

+-   repo: git://github.com/pre-commit/pre-commit-hooks
+    sha: cf550fcab3f12015f8676b8278b30e1a5bc10e70
+    hooks:
+    -   id: check-added-large-files
+    -   id: check-json
+    -   id: check-xml
+    -   id: check-yaml
+    -   id: check-merge-conflict
+    -   id: flake8

MANIFEST.in

+recursive-include unshare
+exclude .pre-commit-config.yaml

Makefile

+.PHONY: clean test all
+
+all: unshare/constants.py
+
+unshare/constants.py:
+	# For now ignore MS_RMT_MASK macro.
+	echo '#include <linux/fs.h>\n#include <linux/sched.h>' | \
+		gcc -E -dM - | \
+		grep -v 'MS_RMT_MASK' | \
+		awk '/#define MS_|#define CLONE_/ {print $$2, "=", $$3}' > unshare/constants.py
+
+clean:
+	rm -rf unshare/constants.py *.pyc __pycache__ unshare/*.pyc unshare/__pycache__
+
+test: clean all
+	python test.py
+	python3 test.py

README.rst

+python-unshare
+##############
+
+This is a pure-Python module for accessing libc functions and macros needed
+for dealing with Linux namespaces.

setup.cfg

+[bdist_wheel]
+# This flag says that the code is written to work on both Python 2 and Python
+# 3. If at all possible, it is good practice to do this. If you cannot, you
+# will need to generate wheels for each Python version that you support.
+universal=1

setup.py

+#!/usr/bin/env python
+from setuptools import setup, find_packages
+
+setup(
+    name='unshare',
+    version='0.2.0',
+    description='Pure Python Linux namespace management.',
+    long_description=open('README.rst', 'r').read(),
+    url='https://www.shore.co.il/git/python-unshare',
+    author='Nimrod Adar',
+    author_email='nimrod@shore.co.il',
+    license='MIT',
+    classifiers=[
+        'Development status :: 3 - Alpha',
+        'Intended Audience :: Developers',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 2.7',
+        'Intended Audience :: System Administrators',
+        'Topic :: Utilities',
+    ],
+    keywords='containers namespace linux',
+    packages=find_packages(exclude=['tests']),
+    install_requires=[],
+    extras_require={
+        'dev': ['tox'],
+        'test': ['flake8', 'check-manifest', 'coverage', 'pytest']},
+)

tests/basic_assertions.py

+import unshare
+
+def import_assestions():
+    for macro in 'CLONE_NEWUTS', 'MS_SHARED':
+        assert macro in dir(unshare)
+    
+    for function in 'clone', 'pivot_root':
+        assert function in dir(unshare)

tox.ini

+[tox]
+envlist = py{27,35}
+
+[testenv]
+basepython =
+    py27: python2.7
+    py35: python3.5
+deps =
+    check-manifest
+    {py27,py35}: readme_renderer
+    flake8
+commands =
+    check-manifest --ignore tox.ini,tests*
+    # py26 doesn't have "setup.py check"
+    {py27,py35}: python setup.py check -m -r -s
+    flake8 .
+    py.test tests
+
+[flake8]
+ignore=F403
+exclude = .tox,*.egg,build,data,unshare/constants.py
+select = E,W,F

unshare/__init__.py

+#!/usr/bin/env python
+
+import ctypes
+try:
+    from constants import *
+except ImportError:
+    try:
+        from unshare.constants import *
+    except BaseException as e:
+        raise e
+
+libc = ctypes.CDLL('libc.so.6')
+
+umount = libc.umount
+umount2 = libc.umount2
+mount = libc.mount
+unshare = libc.unshare
+pivot_root = libc.pivot_root
+setns = libc.setns
+sethostname = libc.sethostname
+clone = libc.clone