MAINT improve version handling

Author: mfeurer

openml/__init__.py

@@ -26,7 +26,7 @@
 from .tasks import OpenMLTask, OpenMLSplit
 from .flows import OpenMLFlow
 
-__version__ = "0.5.0dev"
+from .__version__ import __version__
 
 
 def populate_cache(task_ids=None, dataset_ids=None, flow_ids=None,

openml/__version__.py

@@ -0,0 +1,4 @@
+"""Version information."""
+
+# The following line *must* be the last in the module, exactly as formatted:
+__version__ = "0.5.0dev"

setup.py

@@ -2,6 +2,9 @@
 import setuptools
 import sys
 
+with open("openml/__version__.py") as fh:
+    version = fh.readlines()[-1].split()[-1].strip("\"'")
+
 
 requirements_file = os.path.join(os.path.dirname(__file__), 'requirements.txt')
 requirements = []
@@ -44,7 +47,7 @@
                  description="Python API for OpenML",
                  license="GPLv3",
                  url="http://openml.org/",
-                 version="0.3.0",
+                 version=version,
                  packages=setuptools.find_packages(),
                  package_data={'': ['*.txt', '*.md']},
                  install_requires=requirements,