Nick the Gr33k writes:
> On 14/6/2013 11:28 πμ, Jussi Piitulainen wrote:
>
> >>>> 'Parker' and 'May' and '2001'
> > '2001'
>
> But why?
>
> that expression should return True since all stings are not empty.
It returns a value that counts as true in a conditional statement or
expression:
>>> if '2001': print('got a truish value')
... else: print("didn't")
...
got a truish value
>>> if '': print('got a truish value')
... else: print("didn't")
...
didn't
Zeroes and empty things tend to count as false in Python, other values
as true. The values are tested as is, not coerced to a boolean first,
so the value that decides the value of the whole expression is the
value of the whole expression.
>>> '' and whatever
''
>>> False and whatever
False
>>> 0 and whatever
0
>>> 1 and whatever
Traceback (most recent call last):
File "<stdin>", line 1, in ?
NameError: name 'whatever' is not defined
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