1 files changed, 74 insertions, 3 deletions
diff --git a/Lib/email/__init__.py b/Lib/email/__init__.py
index e5c0e2e..f01260f 100644
--- a/Lib/email/__init__.py
+++ b/Lib/email/__init__.py
@@ -4,9 +4,10 @@
 
 """A package for parsing, handling, and generating email messages."""
 
-__version__ = '3.0.1'
+__version__ = '4.0a2'
 
 __all__ = [
+    # Old names
     'base64MIME',
     'Charset',
     'Encoders',
@@ -27,6 +28,19 @@ __all__ = [
     'Utils',
     'message_from_string',
     'message_from_file',
+    # new names
+    'base64mime',
+    'charset',
+    'encoders',
+    'errors',
+    'generator',
+    'header',
+    'iterators',
+    'message',
+    'mime',
+    'parser',
+    'quoprimime',
+    'utils',
     ]
 
 
@@ -39,7 +53,7 @@ def message_from_string(s, *args, **kws):
 
     Optional _class and strict are passed to the Parser constructor.
     """
-    from email.Parser import Parser
+    from email.parser import Parser
     return Parser(*args, **kws).parsestr(s)
 
 
@@ -48,5 +62,62 @@ def message_from_file(fp, *args, **kws):
 
     Optional _class and strict are passed to the Parser constructor.
     """
-    from email.Parser import Parser
+    from email.parser import Parser
     return Parser(*args, **kws).parse(fp)
+
+
+
+# Lazy loading to provide name mapping from new-style names (PEP 8 compatible
+# email 4.0 module names), to old-style names (email 3.0 module names).
+import sys
+
+class LazyImporter(object):
+    def __init__(self, module_name):
+        self.__name__ = 'email.' + module_name
+
+    def __getattr__(self, name):
+        __import__(self.__name__)
+        mod = sys.modules[self.__name__]
+        self.__dict__.update(mod.__dict__)
+        return getattr(mod, name)
+
+
+_LOWERNAMES = [
+    # email.<old name> -> email.<new name is lowercased old name>
+    'Charset',
+    'Encoders',
+    'Errors',
+    'FeedParser',
+    'Generator',
+    'Header',
+    'Iterators',
+    'Message',
+    'Parser',
+    'Utils',
+    'base64MIME',
+    'quopriMIME',
+    ]
+
+_MIMENAMES = [
+    # email.MIME<old name> -> email.mime.<new name is lowercased old name>
+    'Audio',
+    'Base',
+    'Image',
+    'Message',
+    'Multipart',
+    'NonMultipart',
+    'Text',
+    ]
+
+for _name in _LOWERNAMES:
+    importer = LazyImporter(_name.lower())
+    sys.modules['email.' + _name] = importer
+    setattr(sys.modules['email'], _name, importer)
+
+
+import email.mime
+for _name in _MIMENAMES:
+    importer = LazyImporter('mime.' + _name.lower())
+    sys.modules['email.MIME' + _name] = importer
+    setattr(sys.modules['email'], 'MIME' + _name, importer)
+    setattr(sys.modules['email.mime'], _name, importer)