In the iPython interactive interpreter, obj? prints information about the given object. For example:
In [11]: None? Type: NoneType Base Class: <type 'NoneType'> String Form:None Namespace: Python builtin Docstring: <no docstring> Does anyone know that the Namespace field is supposed to show? I can't get it to display anything except either "Python builtin" or "Interactive". -- Steve “Cheer up,” they said, “things could be worse.” So I cheered up, and sure enough, things got worse. -- https://mail.python.org/mailman/listinfo/python-list
