import unittest
+from fcntl import flock, LOCK_EX, LOCK_UN
class struct(object):
'A simple namespace object.'
- def __init__(self, d = {}):
+ def __init__(self, d = {}, **kwargs):
'd is the dictionary to update my __dict__ with.'
self.__dict__.update(d)
+ self.__dict__.update(kwargs)
def dicts2struct(x):
"""
else:
return x
-def wrap(rsrc, func):
- "Utility to that emulates with Python 2.5's `with closing(rsrc)`."
- try: return func(rsrc)
- finally: rsrc.close()
+#
+# Hacks to work around lack of Python 2.5's `with` statement.
+#
+
+def with_closing(rsrc):
+ """
+ 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()
+ return wrapper
+
+def with_lock_file(path):
+ """
+ Context manager for lock files. Example:
+
+ @with_lock_file('/tmp/mylock')
+ def input():
+ print 'locked'
+ return raw_input()
+ # prints 'locked'
+ print input # prints what raw_input() returned
+ """
+ def wrapper(func):
+ @with_closing(file(path, 'w'))
+ def g(f):
+ flock(f, LOCK_EX)
+ try: return func()
+ finally: flock(f, LOCK_UN)
+ return g
+ return wrapper
+
+#
+# Tests.
+#
class common_tests(unittest.TestCase):
def test_dicts2structs(self):