Fix __version__ import.

There were circular import issues most notably during install. `setup.py` now grabs the version information without having to import the module (which led to importing other modules which isn't appropriate during setup.py activities).

Author: joncotton

embedly/__init__.py

@@ -1,2 +1,4 @@
 from __future__ import absolute_import
-from .client import Embedly, __version__
+from .client import Embedly
+
+__version__ = '0.4.3'

embedly/client.py

@@ -17,16 +17,17 @@
 from .models import Url
 
 
-__version__ = '0.4.3'
-USER_AGENT = 'Mozilla/5.0 (compatible; embedly-python/%s;)' % __version__
+def get_user_agent():
+    from . import __version__
+    return 'Mozilla/5.0 (compatible; embedly-python/%s;)' % __version__
 
 
 class Embedly(object):
     """
     Client
 
     """
-    def __init__(self, key=None, user_agent=USER_AGENT, timeout=60):
+    def __init__(self, key=None, user_agent=None, timeout=60):
         """
         Initialize the Embedly client
 
@@ -37,7 +38,7 @@ def __init__(self, key=None, user_agent=USER_AGENT, timeout=60):
 
         :returns: None
         """
-        self.user_agent = user_agent
+        self.user_agent = user_agent or get_user_agent()
         self.timeout = timeout
         self.key = key
         self.services = []

setup.py

@@ -10,7 +10,11 @@
 if sys.version_info[:2] < (2, 6):
     required.append('simplejson')
 
-version = __import__('embedly').__version__
+def get_version():
+    with open(os.path.join('embedly', '__init__.py')) as f:
+        for line in f:
+            if line.startswith('__version__ ='):
+                return line.split('=')[1].strip().strip('"\'')
 
 if os.path.exists("README.rst"):
     long_description = codecs.open("README.rst", "r", "utf-8").read()
@@ -20,7 +24,7 @@
 
 setup(
     name='Embedly',
-    version=version,
+    version=get_version(),
     author='Embed.ly, Inc.',
     author_email='support@embed.ly',
     description='Python Library for Embedly',