6.7. Boolean Conjunction¶
6.7.1. Rationale¶
1 & 1 -> 1
1 & 0 -> 0
0 & 1 -> 0
0 & 0 -> 0
6.7.2. Syntax¶
>>> True and True
True
>>> True and False
False
>>> False and True
False
>>> False and False
False
6.7.3. Example 1¶
>>> firstname = 'Mark'
>>> lastname = 'Watney'
>>>
>>> firstname == 'Mark' and lastname == 'Watney'
True
Because:
>>> firstname == 'Mark'
True
>>> lastname == 'Watney'
True
Rule:
>>> True and True
True
6.7.4. Example 2¶
>>> firstname = 'Mark'
>>> lastname = 'Watney'
>>>
>>> firstname == 'Mark' and lastname == 'Twardowski'
False
Because:
>>> firstname == 'Mark'
True
>>> lastname == 'Twardowski'
False
Rule:
>>> True and False
False
6.7.5. Control Flow¶
>>> firstname = 'Mark'
>>> lastname = 'Watney'
>>>
>>> if firstname == 'Mark' and lastname == 'Watney':
... print('Hello Space Pirate')
... else:
... print('Sorry, astronauts only')
Hello Space Pirate