Issue 3754 - Initial setup of the python-abp repo.

setup.py

-# -*- coding: utf-8 -*-
-
 # This file is part of Adblock Plus <https://adblockplus.org/>,
 # Copyright (C) 2006-2016 Eyeo GmbH
 #
 # Adblock Plus is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 3 as
 # published by the Free Software Foundation.
 #
 # Adblock Plus is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
 
-"""A library for working with Adblock Plus filterlists."""
+import subprocess
+from os import path
+from setuptools import setup, Command
 
-from setuptools import setup
+
+DEVENV = 'devenv'
+PIP = path.join(DEVENV, 'bin', 'pip')
+DEV_DEPENDENCIES = ['pytest', 'tox']
+
+
+class devenv(Command):
+    """Set up development virtualenv."""
+
+    description = "set up development virtualenv"
+    user_options = [('python=', 'p', "the python interpreter to use")]
+
+    def initialize_options(self):
+        self.python = 'python'
+
+    def finalize_options(self):
+        pass
+
+    def run(self):
+        subprocess.check_call(['virtualenv', '-p', self.python, DEVENV])
+        subprocess.check_call([PIP, 'install'] + DEV_DEPENDENCIES)
+        subprocess.check_call([PIP, 'install', '-e', '.'])
 
 
 setup(
     name='python-abp',
     version='0.0.1',
     description='ABP python tools',
-    long_description=__doc__,
+    long_description="A library for working with Adblock Plus filter lists.",
     author='Vasily Kuznetsov',
     author_email='vasily@adblockplus.org',
     url='https://hg.adblockplus.org/python-abp/',
     packages=['abp', 'abp.filters'],
+    cmdclass={'devenv': devenv},
     include_package_data=True,
     license='GPLv3',
     zip_safe=False,
     keywords='filterlist adblockplus ABP',
     classifiers=[
         'Development Status :: 2 - Pre-Alpha',
         'Intended Audience :: Developers',
         'License :: OSI Approved :: GNU General Public License v3 (GPLv3)',
         'Natural Language :: English',
         'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
-        'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
     ]
 )