9.10. Comprehension All, Any

9.10.1. Any

>>> any(x for x in range(0,5))
True

>>> users = [
...     {'is_admin': False, 'name': 'Mark Watney'},
...     {'is_admin': True,  'name': 'Melissa Lewis'},
...     {'is_admin': False, 'name': 'Rick Martinez'},
...     {'is_admin': False, 'name': 'Alex Vogel'},
...     {'is_admin': True,  'name': 'Beth Johanssen'},
...     {'is_admin': False, 'name': 'Chris Beck'},
... ]
>>>
>>>
>>> if any(user['is_admin'] for user in users):
...     print('At least one user is admin')
... else:
...     print('There are no admins')
At least one user is admin

9.10.2. All

>>> all(x for x in range(0,5))
False

>>> users = [
...     {'is_admin': False, 'name': 'Mark Watney'},
...     {'is_admin': True,  'name': 'Melissa Lewis'},
...     {'is_admin': False, 'name': 'Rick Martinez'},
...     {'is_admin': False, 'name': 'Alex Vogel'},
...     {'is_admin': True,  'name': 'Beth Johanssen'},
...     {'is_admin': False, 'name': 'Chris Beck'},
... ]
>>>
>>>
>>> if all(user['is_admin'] for user in users):
...     print('Everyone has admin permissions')
... else:
...     print('Not everyone is admin')
Not everyone is admin

>>> DATA = [
...     ('sepal_length', 'sepal_width', 'petal_length', 'petal_width', 'species'),
...     (5.8, 2.7, 5.1, 1.9, 'virginica'),
...     (5.1, 3.5, 1.4, 0.2, 'setosa'),
...     (5.7, 2.8, 4.1, 1.3, 'versicolor'),
...     (6.3, 2.9, 5.6, 1.8, 'virginica'),
...     (6.4, 3.2, 4.5, 1.5, 'versicolor'),
...     (4.7, 3.2, 1.3, 0.2, 'setosa'),
...     (7.0, 3.2, 4.7, 1.4, 'versicolor'),
... ]
>>>
>>>
>>> all(observation > 1.0
...     for *features, label in DATA[1:]
...     for observation in features
...     if isinstance(observation, float))
False