4.8. Any

4.8.1. Rationale

Return True if any element of the iterable is true. If the iterable is empty, return False.

4.8.2. Implementation

>>> def any(iterable):
...     if not iterable:
...         return False
...     for element in iterable:
...         if element:
...             return True
...     return False

4.8.3. Use Case

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

>>> DATA = [{'is_astronaut': True,  'name': 'Jan Twardowski'},
...         {'is_astronaut': True,  'name': 'Mark Watney'},
...         {'is_astronaut': False, 'name': 'José Jiménez'},
...         {'is_astronaut': True,  'name': 'Melissa Lewis'},
...         {'is_astronaut': False, 'name': 'Alex Vogel'}]
>>>
>>>
>>> if any(person['is_astronaut'] for person in DATA):
...     print('At least one person is astronaut')
... else:
...     print('There are no astronauts')
At least one person is astronaut