On Thu, Jun 28, 2012 at 9:24 AM, David <dwb...@gmail.com> wrote: > First, you should be getting an error on > vars()[var] = Button(f3, text = "00", bg = "white") > as vars() has not been declared and it does not appear to be valid Python > syntax.
It's valid syntax, but highly inadvisable. What it does is call the vars() function, then dereference its argument for assignment - perfectly legal when the function returns a dictionary, which vars does. But check the docs: http://docs.python.org/library/functions.html#vars It's intended to be read, NOT written. It's entirely possible that this works at module level, but should not be relied on. Also, other Python implementations or even other versions of the same Python could behave differently. ChrisA -- http://mail.python.org/mailman/listinfo/python-list