On Fri, Jun 24, 2011 at 2:32 PM, Chetan Harjani <chetan.harj...@gmail.com> wrote: > x=y="some string" > And we know that python interprets from left to right. so why it doesnt > raise a name error here saying name 'y' is not defined?
In most languages, the answer is that the = operator associates right to left, even though most other operators associate left to right. (That's how C does it, for instance.) But in Python, I believe it's actually one operator taking several parameters, because = is not an expression. In any case, you can safely treat = as an exception to the left-to-right rule. There are other exceptions too - note the comments in http://docs.python.org/reference/expressions.html#summary - there's not many RTL operators in Python, only those that make sense that way. :) ChrisA -- http://mail.python.org/mailman/listinfo/python-list
