py26 and py3 compatibility updates.

jira/client.py

@@ -56,9 +56,6 @@
 # if encoding != 'UTF8':
 #    warnings.warn("Python default encoding is '%s' instead of 'UTF8' which means that there is a big change of having problems. Possible workaround http://stackoverflow.com/a/17628350/99834" % encoding)
 
-# we do want to log warrning from our code
-logging.captureWarnings(True)
-
 
 def translate_resource_args(func):
     """
@@ -217,8 +214,11 @@ def __init__(self, server=None, options=None, basic_auth=None, oauth=None, valid
     def _check_update_(self):
         # check if the current version of the library is outdated
         import json
-        import urllib2
-        response = urllib2.urlopen(
+        try:
+            from urllib.request import urlopen
+        except ImportError:
+            from urllib2 import urlopen
+        response = urlopen(
             "http://pypi.python.org/pypi/jira/json")
         data = json.load(response)
         released_version = data['info']['version']

setup.py

@@ -14,7 +14,7 @@
 base_path = os.path.dirname(__file__)
 fp = open(os.path.join(base_path, NAME, 'version.py'))
 __version__ = re.compile(r".*__version__ = '(.*?)'",
-                     re.S).match(fp.read()).group(1)
+                         re.S).match(fp.read()).group(1)
 fp.close()
 
 
@@ -91,8 +91,11 @@ def finalize_options(self):
 
     def run(self):
         import json
-        import urllib2
-        response = urllib2.urlopen(
+        try:
+            from urllib.request import urlopen
+        except ImportError:
+            from urllib2 import urlopen
+        response = urlopen(
             "http://pypi.python.org/pypi/%s/json" % NAME)
         data = json.load(response)
         released_version = data['info']['version']