Use setuptools-scm for version and drop Python 2.7

Author: Christian Sandberg

canopen/__init__.py

@@ -1,8 +1,16 @@
-from .version import __version__
+from pkg_resources import get_distribution, DistributionNotFound
 from .network import Network, NodeScanner
 from .node import RemoteNode, LocalNode
 from .sdo import SdoCommunicationError, SdoAbortedError
 from .objectdictionary import import_od, ObjectDictionary, ObjectDictionaryError
 from .profiles.p402 import BaseNode402
 
 Node = RemoteNode
+
+try:
+    __version__ = get_distribution(__name__).version
+except DistributionNotFound:
+    # package is not installed
+    __version__ = "unknown"
+
+__pypi_url__ = "https://pypi.org/project/canopen/"

canopen/version.py

@@ -18,10 +18,9 @@
 #
 import os
 import sys
+from pkg_resources import get_distribution
 sys.path.insert(0, os.path.abspath('..'))
 
-exec(open('../canopen/version.py').read())
-
 # -- General configuration ------------------------------------------------
 
 # If your documentation needs a minimal Sphinx version, state it here.
@@ -62,10 +61,10 @@
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
-# The short X.Y version.
-version = '.'.join(__version__.split('.')[0:2])
 # The full version, including alpha/beta/rc tags.
-release = __version__
+release = get_distribution('canopen').version
+# The short X.Y version.
+version = '.'.join(release.split('.')[:2])
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.

doc/conf.py

@@ -1,19 +1,13 @@
 from setuptools import setup, find_packages
 
-exec(open('canopen/version.py').read())
-
 description = open("README.rst").read()
 # Change links to stable documentation
 description = description.replace("/latest/", "/stable/")
-# Change pip install to this exact version
-description = description.replace(
-    "pip install canopen",
-    "pip install canopen==" + __version__)
 
 setup(
     name="canopen",
     url="https://github.com/christiansandberg/canopen",
-    version=__version__,
+    use_scm_version=True,
     packages=find_packages(),
     author="Christian Sandberg",
     author_email="[email protected]",
@@ -23,10 +17,9 @@
     license="MIT",
     platforms=["any"],
     classifiers=[
-        "Development Status :: 4 - Beta",
+        "Development Status :: 5 - Production/Stable",
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",
-        "Programming Language :: Python :: 2",
         "Programming Language :: Python :: 3",
         "Intended Audience :: Developers",
         "Topic :: Scientific/Engineering"
@@ -35,9 +28,6 @@
     extras_require={
         "db_export": ["canmatrix"]
     },
-    include_package_data=True,
-
-    # Tests can be run using `python setup.py test`
-    test_suite="nose.collector",
-    tests_require=["nose"]
+    setup_requires=["setuptools_scm"],
+    include_package_data=True
 )