X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/invirt-base.git/blobdiff_plain/ff3dc91d38ee542dbb79c94ac910b43c2985b58e..a11a45e1b18add76f2a440412ef6379a9874b082:/files/usr/share/python-support/sipb-xen-base/invirt/common.py

diff --git a/files/usr/share/python-support/sipb-xen-base/invirt/common.py b/files/usr/share/python-support/sipb-xen-base/invirt/common.py
index ca90714..5f669ba 100644
--- a/files/usr/share/python-support/sipb-xen-base/invirt/common.py
+++ b/files/usr/share/python-support/sipb-xen-base/invirt/common.py
@@ -1,6 +1,5 @@
 import unittest
 from fcntl import flock, LOCK_EX, LOCK_UN
-from os import remove
 
 class struct(object):
     'A simple namespace object.'
@@ -26,7 +25,15 @@ def dicts2struct(x):
 #
 
 def with_closing(rsrc):
-    "Utility to emulate Python 2.5's `with closing(rsrc)` context manager."
+    """
+    Utility to emulate Python 2.5's `with closing(rsrc)` context manager.
+
+    E.g.,
+    @with_closing(file('/tmp/foo'))
+    def contents(f):
+        return f.read()
+    # now 'contents' is the contents of /tmp/foo
+    """
     def wrapper(func):
         try: return func(rsrc)
         finally: rsrc.close()
@@ -40,8 +47,8 @@ def with_lock_file(path):
     def input():
         print 'locked'
         return raw_input()
-    # decorator is executed immediately
-    print input # prints the input text
+    # prints 'locked'
+    print input # prints what raw_input() returned
     """
     def wrapper(func):
         @with_closing(file(path, 'w'))
@@ -49,7 +56,6 @@ def with_lock_file(path):
             flock(f, LOCK_EX)
             try: return func()
             finally: flock(f, LOCK_UN)
-        remove(path)
         return g
     return wrapper