In Python, the default values of parameters are evaluated only once
during their declaration. So, whenever the default parameter is used
the same object will be used. Since we use a list, which is a mutable
object, this could lead to unexpected results.
PR-URL: https://github.com/nodejs/node/pull/2553
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Sakthipriyan Vairamani