Merge pull request #6 from icgc-dcc/fix/ip_address

tested, works on both mac and ubuntu 16.04

jtracker/jtracker.py

@@ -176,9 +176,12 @@ def _init_host_id(self):
 
     def _init_host_ip(self):
         try:
-            self._host_ip = [l for l in ([ip for ip in socket.gethostbyname_ex(socket.gethostname())[2] if not ip.startswith("127.")][:1], [[(s.connect(('8.8.8.8', 53)), s.getsockname()[0], s.close()) for s in [socket.socket(socket.AF_INET, socket.SOCK_DGRAM)]][0][1]]) if l][0][0]
+            self._host_ip = [ip for ip in socket.gethostbyname_ex(socket.gethostname())[2] if not ip.startswith("127.")][:1][0]
         except:
-            self._host_ip = '127.0.0.1'
+            try:
+                self._host_ip = [(s.connect(('8.8.8.8', 53)), s.getsockname()[0], s.close()) for s in [socket.socket(socket.AF_INET, socket.SOCK_DGRAM)]][0][1]
+            except:
+                self._host_ip = '127.0.0.1'
 
     @staticmethod
     def _find_file(name, path):