Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\WINDOWS>python
Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit (Intel)] o
win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import shelve
>>> d = shelve.open("foo")
>>> d["foo"] = u"bar"
>>> d["foo"]
u'bar'
>>> d[u"bar"] = "foo"
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python25\lib\shelve.py", line 124, in __setitem__
    self.dict[key] = f.getvalue()
  File "C:\Python25\lib\bsddb\__init__.py", line 230, in __setitem__
    _DeadlockWrap(wrapF)  # self.db[key] = value
  File "C:\Python25\lib\bsddb\dbutils.py", line 62, in DeadlockWrap
    return function(*_args, **_kwargs)
  File "C:\Python25\lib\bsddb\__init__.py", line 229, in wrapF
    self.db[key] = value
TypeError: String or Integer object expected for key, unicode found
>>> import bsddb
>>> db = bsddb.btopen('foobar', 'c')
>>> db["foo"] = u"bar"
>>> db[u"bar"] = "foo"
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python25\lib\bsddb\__init__.py", line 230, in __setitem__
    _DeadlockWrap(wrapF)  # self.db[key] = value
  File "C:\Python25\lib\bsddb\dbutils.py", line 62, in DeadlockWrap
    return function(*_args, **_kwargs)
  File "C:\Python25\lib\bsddb\__init__.py", line 229, in wrapF
    self.db[key] = value
TypeError: String or Integer object expected for key, unicode found
>>> bsddb.btopen('foobar', 'c')[u'foo'] = "bar"
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python25\lib\bsddb\__init__.py", line 230, in __setitem__
    _DeadlockWrap(wrapF)  # self.db[key] = value
  File "C:\Python25\lib\bsddb\dbutils.py", line 62, in DeadlockWrap
    return function(*_args, **_kwargs)
  File "C:\Python25\lib\bsddb\__init__.py", line 229, in wrapF
    self.db[key] = value
TypeError: String or Integer object expected for key, unicode found
>>>