pep8 and style modifications
diff --git a/updatezinfo.py b/updatezinfo.py
index ade4d05..ed688de 100755
--- a/updatezinfo.py
+++ b/updatezinfo.py
@@ -10,18 +10,21 @@
 
 METADATA_FILE = "zonefile_metadata.json"
 
+
 def main():
-    with io.open(METADATA_FILE,'r') as f:
+    with io.open(METADATA_FILE, 'r') as f:
         metadata = json.load(f)
 
     if not os.path.isfile(metadata['tzdata_file']):
         print("Downloading tz file from iana")
-        request.urlretrieve(os.path.join(metadata['releases_url'],metadata['tzdata_file']), metadata['tzdata_file'])
-    with open(metadata['tzdata_file'],'rb') as tzfile:
+        request.urlretrieve(os.path.join(metadata['releases_url'],
+                                         metadata['tzdata_file']),
+                            metadata['tzdata_file'])
+    with open(metadata['tzdata_file'], 'rb') as tzfile:
         sha_hasher = hashlib.sha512()
         sha_hasher.update(tzfile.read())
         sha_512_file = sha_hasher.hexdigest()
-        assert metadata['tzdata_file_sha512'] == sha_512_file, "SHA failed for downloaded tz file"
+        assert metadata['tzdata_file_sha512'] == sha_512_file, "SHA failed for"
     print("Updating timezone information...")
     rebuild(metadata['tzdata_file'], zonegroups=metadata['zonegroups'])
     print("Done.")