Question

This is what I found in my install of Python 3.1 on Windows.

Where can I find other types, specifically DictType and StringTypes?

>>> print('\n'.join(dir(types)))
BuiltinFunctionType
BuiltinMethodType
CodeType
FrameType
FunctionType
GeneratorType
GetSetDescriptorType
LambdaType
MemberDescriptorType
MethodType
ModuleType
TracebackType
__builtins__
__doc__
__file__
__name__
__package__
>>> 

Answer 1

According to the doc of the types module (http://docs.python.org/py3k/library/types.html),

This module defines names for some object types that are used by the standard Python interpreter, but not exposed as builtins like int or str are. …

Typical use is for isinstance() or issubclass() checks.

Since the dictionary type can be used with dict, there is no need to introduce such a type in this module.

>>> isinstance({}, dict)
True
>>> isinstance('', str)
True
>>> isinstance({}, str)
False
>>> isinstance('', dict)
False

(The examples on int and str are outdated too.)