read package info from __init__.py, as to the DRY principle

pymmrouting/__init__.py

@@ -2,9 +2,10 @@
 #           'switchcondition', 'datamodel']
 
 __title__ = 'pymmrouting'
-__version__ = '0.3.2'
+__version__ = '0.3.3'
 __author__ = 'LIU Lu'
-__license__ = 'The MIT License'
+__contact__ = 'nudtlliu@gmail.com'
+__license__ = 'MIT'
 __copyright__ = 'Copyright 2014-2015 LIU Lu'
 
 __all__ = ['routeplanner', 'inferenceengine', 'routingresult',
@@ -14,7 +15,6 @@
 from .inferenceengine import RoutingPlan, RoutingPlanInferer
 from .routingresult import RoutingResult
 from .switchcondition import SwitchCondition
-#from pymmrouting.datamodel import MultimodalNetwork
 
 # Set default logging handler to avoid "No handler found" warnings.
 import logging

setup.py

@@ -1,10 +1,32 @@
+import re
+
+from codecs import open
 from distutils.core import setup
 
-setup(name="pymmrouting",
-      version="0.3.2",
+version = ''
+license = ''
+title = ''
+author = ''
+contact = ''
+with open('pymmrouting/__init__.py', 'r') as fd:
+    file_content = fd.read()
+    version = re.search(r'^__version__\s*=\s*[\'"]([^\'"]*)[\'"]',
+                        file_content, re.MULTILINE).group(1)
+    license = re.search(r'^__license__\s*=\s*[\'"]([^\'"]*)[\'"]',
+                        file_content, re.MULTILINE).group(1)
+    title = re.search(r'^__title__\s*=\s*[\'"]([^\'"]*)[\'"]',
+                        file_content, re.MULTILINE).group(1)
+    author = re.search(r'^__author__\s*=\s*[\'"]([^\'"]*)[\'"]',
+                        file_content, re.MULTILINE).group(1)
+    contact = re.search(r'^__contact__\s*=\s*[\'"]([^\'"]*)[\'"]',
+                        file_content, re.MULTILINE).group(1)
+
+setup(name=title,
+      version=version,
       description="""Python implementation of multimodal routing engine
                      based on multimodal shortest path algorithm for
                      postgis library (libmmspa4pg)""",
-      author="Lu LIU",
-      author_email="nudtlliu@gmail.com",
+      author=author,
+      author_email=contact,
+      license=license,
       packages=['pymmrouting'])