Flake8 reported unknown var home. Replace with _home in cache.

Also formatting/whitespace changes.

Author: rouilj

roundup/cgi/apache.py

@@ -27,6 +27,7 @@
 import roundup.instance
 from roundup.cgi import TranslationService
 
+
 class Headers(dict):
 
     """HTTP headers wrapper"""
@@ -36,6 +37,7 @@ def __init__(self, headers):
         super(Headers, self).__init__(headers)
         self.getheader = self.get
 
+
 class Request(object):
 
     """`apache.Request` object wrapper providing roundup client interface"""
@@ -73,15 +75,15 @@ def end_headers(self):
         """NOOP. There aint no such thing as 'end_headers' in mod_python"""
         pass
 
- 
-    def sendfile(self, filename, offset = 0, len = -1):
+    def sendfile(self, filename, offset=0, len=-1):
         """Send 'filename' to the user."""
 
         return self._req.sendfile(filename, offset, len)
 
+
 __tracker_cache = {}
 """A cache of optimized tracker instances.
- 
+
 The keys are strings giving the directories containing the trackers.
 The values are tracker instances."""
 
@@ -118,7 +120,7 @@ def handler(req):
                 # The tracker may have been added while we were acquiring
                 # the lock.
                 if _home in __tracker_cache:
-                    _tracker = __tracker_cache[home]
+                    _tracker = __tracker_cache[_home]
                 else:
                     _tracker = roundup.instance.open(_home, optimize=1)
                     __tracker_cache[_home] = _tracker