Defining a list in Python is easy—just use the bracket syntax to indicate items in a list, like this: list_of_ints = [1, 2, 3] Items in a list do not have to all be the same type; they can be ...

What you’ve got are objects. Every data item under Python is an object with a name, an identity, a type and a value. You might remember we mentioned that Python object types can be dynamic ...

Any mutable Python object doesn’t have a consistent hash value over its lifetime, and so can’t be used as a key. For instance, a list can’t be a key, because elements can be added to or ...