Fahri Basegmez wrote:
"Michael Spencer" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
Fahri Basegmez wrote:
reduce(lambda x, y: x or y, lst)
works but when I tried
import operator
reduce(operator.or_, lst)
this did not work. It pukes
Traceback (most recent call last):
File "<interactive input>", line 1, in ?
TypeError: unsupported operand type(s) for |: 'NoneType' and 'bool'
Any comments?
Fahri
TypeError: unsupported operand type(s) for |: 'NoneType' and 'bool'
operator.or_ is "|" i.e., bitwise, not logical or
Michael
That explains it. Is there a logical or we can use with reduce?
Fahri
Yes, but it's not quite the same as the 'or' operator
>>> bool.__or__(True, False)
True
>>> bool.__or__(False, False)
False
>>> bool.__or__(False, None)
NotImplemented
>>>
this may not be intentional...
Michael
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