libgmail: attaching files

[wal]

How does one attach files to emails using libgmail? The following code
http://pramode.net/articles/lfy/fuse/4.txt
works fine when said files are simple text files, but it failes as soon as
the files are wild binary files, even attaching the source of an email in a
text file (.eml files) failes.
What am I missing here? Any hints?
The output I get when attemting to send binary files using the code above
is pasted below.

have fun,
wal

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Traceback (most recent call last):
File "C:\Documen ts and
Settings\lucp17 35\Desktop\libg mail-0.1.5.1\knujon. py", line 24, in <module>
if ga.sendMessage( fs):
File "C:\Documen ts and
Settings\lucp17 35\Desktop\libg mail-0.1.5.1\libgmai l.py", line 582, in
sendMessage
msgStr = mimeMessage.as_ string()
File "C:\program files\Python25\ lib\email\messa ge.py", line 131, in
as_string
g.flatten(self, unixfrom=unixfr om)
File "C:\program files\Python25\ lib\email\gener ator.py", line 84, in
flatten
self._write(msg )
File "C:\program files\Python25\ lib\email\gener ator.py", line 109, in
_write
self._dispatch( msg)
File "C:\program files\Python25\ lib\email\gener ator.py", line 135, in
_dispatch
meth(msg)
File "C:\program files\Python25\ lib\email\gener ator.py", line 201, in
_handle_multipa rt
g.flatten(part, unixfrom=False)
File "C:\program files\Python25\ lib\email\gener ator.py", line 84, in
flatten
self._write(msg )
File "C:\program files\Python25\ lib\email\gener ator.py", line 109, in
_write
self._dispatch( msg)
File "C:\program files\Python25\ lib\email\gener ator.py", line 135, in
_dispatch
meth(msg)
File "C:\program files\Python25\ lib\email\gener ator.py", line 266, in
_handle_message
g.flatten(msg.g et_payload(0), unixfrom=False)
File "C:\program files\Python25\ lib\email\messa ge.py", line 185, in
get_payload
raise TypeError('Expe cted list, got %s' % type(self._payl oad))
TypeError: Expected list, got <type 'str'>