--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Lib/email/Iterators.py	Sun Sep 23 03:17:28 2001 +0000
@@ -0,0 +1,33 @@
+# Copyright (C) 2001 Python Software Foundation
+# Author: barry@zope.com (Barry Warsaw)
+
+"""Various types of useful iterators and generators.
+"""
+
+from __future__ import generators
+from cStringIO import StringIO
+from types import StringType
+
+
+
+def body_line_iterator(msg):
+    """Iterator over the parts, returning the lines in a string payload."""
+    for subpart in msg.walk():
+        payload = subpart.get_payload()
+        if type(payload) is StringType:
+            for line in StringIO(payload):
+                yield line
+
+
+
+def typed_subpart_iterator(msg, major='text', minor=None):
+    """Iterator over the subparts with a given MIME type.
+
+    Use `major' as the main MIME type to match against; this defaults to
+    "text".  Optional `minor' is the MIME subtype to match against; if
+    omitted, only the main type is matched.
+    """
+    for subpart in msg.walk():
+        if subpart.get_main_type() == major:
+            if minor is None or subpart.get_subtype() == minor:
+                yield subpart