thanks everybody.
--
http://mail.python.org/mailman/listinfo/python-list
thanks all,
>Yes. That's the exact purpose of the in-place operators when they deal with
>mutable objects. What else did you expect?
well, frankly I expected a |= b to mean exactly the same as a = a | b
regardless of the object type.
> The manual explicitly specifies that mutable objects may imp
Hi All,
what's the exact semantics of the |= operator in python?
It seems that a |= d is not always equivalent to a = a | d
For example let's consider the following code:
def foo(s):
s = s | set([10])
def bar(s):
s |= set([10])
s = set([1,2])
foo(s)
print s # prints set([1, 2])
bar(s)
