7.7. Boolean Disjunction¶

or

| 1 -> 1
| 0 -> 1
| 1 -> 1
| 0 -> 0

7.7.1. Syntax¶

>>> True or True
True

>>> True or False
True

>>> False or True
True

>>> False or False
False

7.7.2. Example¶

>>> name = 'Mark Watney'
>>>
>>> name == 'Mark Watney' or name == 'Melissa Lewis'
True

Because:

>>> name = 'Mark Watney'
>>>
>>> name == 'Mark Watney'
True
>>> name == 'Melissa Lewis'
False

Rule:

>>> True or False
True

7.7.3. Control Flow¶

>>> name = 'Watney'
>>>
>>> if name == 'Watney' or name == 'Lewis':
...     print('Hello astronaut')
... else:
...     print('Sorry, astronauts only')
Hello astronaut