On Jun 23, 1:32 am, "Serve Lau" <[EMAIL PROTECTED]> wrote: > What is the expected result of -1/2 in python?
Operator precedence: Both python 2 and 3 follows the same rule for operator precedence, see: http://www.ibiblio.org/g2swap/byteofpython/read/operator-precedence.html . In -1/2, unary negative takes precedence, then division, i.e. it's interpreted as ((-1) / 2). Py3k and Python 2 differences: Before Python 3, integer division is always rounds to minus infinity. In Python 3, integer division yields floats. To use integer division in Python 3, you use // operator. Simple answer: Python 2: (-1)/2 = round(-0.5) = -1 Py3k: (-1)/2 = float(-1) / float(2) = -0.5 -- http://mail.python.org/mailman/listinfo/python-list