All of Python's immutable built-in objects are hashable, while no mutable
containers (such as lists or dictionaries) are. Objects which are
instances of user-defined classes are hashable by default; they all
- compare unequal (except with themselves), and their hash value is their
- :func:`id`.
+ compare unequal (except with themselves), and their hash value is derived
+ from their :func:`id`.
IDLE
An Integrated Development Environment for Python. IDLE is a basic editor