Issue 5013: Fixed bug in FileHandler when delay was set - added fix for RotatingFileHandler and changed header comment slightly.

Lib/logging/handlers.py

@@ -19,9 +19,9 @@ Additional handlers for the logging package for Python. The core package is
 based on PEP 282 and comments thereto in comp.lang.python, and influenced by
 Apache's log4j system.
 
-Copyright (C) 2001-2008 Vinay Sajip. All Rights Reserved.
+Copyright (C) 2001-2009 Vinay Sajip. All Rights Reserved.
 
-To use, simply 'import logging' and log away!
+To use, simply 'import logging.handlers' and log away!
 """
 
 import logging, socket, os, pickle, struct, time, re
@@ -112,8 +112,8 @@ class RotatingFileHandler(BaseRotatingHandler):
         """
         Do a rollover, as described in __init__().
         """
-
-        self.stream.close()
+        if self.stream:
+            self.stream.close()
         if self.backupCount > 0:
             for i in range(self.backupCount - 1, 0, -1):
                 sfn = "%s.%d" % (self.baseFilename, i)
@@ -138,6 +138,8 @@ class RotatingFileHandler(BaseRotatingHandler):
         Basically, see if the supplied record would cause the file to exceed
         the size limit we have.
         """
+        if self.stream is None:                 # delay was set...
+            self.stream = self._open()
         if self.maxBytes > 0:                   # are we rolling over?
             msg = "%s\n" % self.format(record)
             self.stream.seek(0, 2)  #due to non-posix-compliant Windows feature
@@ -302,7 +304,8 @@ class TimedRotatingFileHandler(BaseRotatingHandler):
         then we have to get a list of matching filenames, sort them and remove
         the one with the oldest suffix.
         """
-        self.stream.close()
+        if self.stream:
+            self.stream.close()
         # get the time that this sequence started at and make it a TimeTuple
         t = self.rolloverAt - self.interval
         if self.utc: