9.5. Nested Dict of Many

• Similar to JSON's list of objects

Examples:

>>> DATA = {
...     'username': 'alice',
...     'password': 'secret',
...     'age': 30,
...     'lastlogin': '2000-01-01',
...     'is_active': True,
...     'is_staff': True,
...     'is_superuser': False,
...     'emails': ('alice@example.com', 'alice@example.edu'),
...     'permissions': ['auth.add_user', 'auth.change_user'],
...     'groups': {'users', 'staff', 'admins'},
...     'friends': [
...         {'username': 'bob', 'email': 'bob@example.com'},
...         {'username': 'carol', 'email': 'carol@example.com'},
...         {'username': 'dave', 'email': 'dave@example.org'},
...         {'username': 'eve', 'email': 'eve@example.org'},
...         {'username': 'mallory', 'email': 'mallory@example.net'},
...     ],
... }

9.5.1. Format

• Content could be even more complex data structure with nested items

>>> DATA = {
...     'username': 'alice',
...     'password': 'secret',
...     'age': 30,
...     'lastlogin': '2000-01-01',
...     'is_active': True,
...     'is_staff': True,
...     'is_superuser': False,
...     'emails': ('alice@example.com', 'alice@example.edu'),
...     'permissions': ['auth.add_user', 'auth.change_user'],
...     'groups': {'users', 'staff', 'admins'},
...     'friends': [
...         {'username': 'bob', 'email': 'bob@example.com'},
...         {'username': 'carol', 'email': 'carol@example.com'},
...         {'username': 'dave', 'email': 'dave@example.org'},
...         {'username': 'eve', 'email': 'eve@example.org'},
...         {'username': 'mallory', 'email': 'mallory@example.net'},
...     ],
... }

9.5.2. Length

>>> DATA = {
...     'username': 'alice',
...     'password': 'secret',
...     'age': 30,
...     'lastlogin': '2000-01-01',
...     'is_active': True,
...     'is_staff': True,
...     'is_superuser': False,
...     'emails': ('alice@example.com', 'alice@example.edu'),
...     'permissions': ['auth.add_user', 'auth.change_user'],
...     'groups': {'users', 'staff', 'admins'},
...     'friends': [
...         {'username': 'bob', 'email': 'bob@example.com'},
...         {'username': 'carol', 'email': 'carol@example.com'},
...         {'username': 'dave', 'email': 'dave@example.org'},
...         {'username': 'eve', 'email': 'eve@example.org'},
...         {'username': 'mallory', 'email': 'mallory@example.net'},
...     ],
... }

>>> len(DATA)
11

>>> len(DATA['friends'])
5

>>> len(DATA['friends'][0]['username'])
3

9.5.3. Assignments