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) print s # prints set([1, 2, 10]) So it appears that inside bar function the |= operator modifies the value of s in place rather than creates a new value. I'm using Python 2.5 Thanks everybody, Vitali -- http://mail.python.org/mailman/listinfo/python-list
