Removed redundant specification of version number (#2926)

* Removed redundant specification of version number

* Replaced pymc3 import in setup with regex function for getting version

* Removed typo

Author: fonnesbeck

docs/source/conf.py

@@ -17,6 +17,8 @@
 import os
 import shlex
 
+import pymc3
+
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
@@ -79,9 +81,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '3.4'
+version = pymc3.__version__
 # The full version, including alpha/beta/rc tags.
-release = '3.4rc1'
+release =  version
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.

setup.py

@@ -3,15 +3,14 @@
 from os.path import realpath, dirname, join
 from setuptools import setup, find_packages
 import sys
-
+import re
 
 DISTNAME = 'pymc3'
 DESCRIPTION = "Probabilistic Programming in Python: Bayesian Modeling and Probabilistic Machine Learning with Theano"
 AUTHOR = 'PyMC Developers'
 AUTHOR_EMAIL = '[email protected]'
 URL = "http://github.com/pymc-devs/pymc3"
 LICENSE = "Apache License, Version 2.0"
-VERSION = "3.4rc1"
 
 classifiers = ['Development Status :: 5 - Production/Stable',
                'Programming Language :: Python',
@@ -45,10 +44,19 @@
 if sys.version_info[0] == 2:  # py3 has mock in stdlib
     test_reqs.append('mock')
 
+def get_version():
+    VERSIONFILE = join('pymc3', '__init__.py')
+    lines = open(VERSIONFILE, 'rt').readlines()
+    version_regex = r"^__version__ = ['\"]([^'\"]*)['\"]"
+    for line in lines:
+        mo = re.search(version_regex, line, re.M)
+        if mo:
+            return mo.group(1)
+    raise RuntimeError('Unable to find version in %s.' % (VERSIONFILE,))
 
 if __name__ == "__main__":
     setup(name=DISTNAME,
-          version=VERSION,
+          version=get_version(),
           maintainer=AUTHOR,
           maintainer_email=AUTHOR_EMAIL,
           description=DESCRIPTION,