<[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > > Terry Reedy wrote: >> Program performance might be noticeable if 'x' is something like a.b.c.d >> that takes some lookup time. But again, I would use the += form for >> readability without testing run time. > > Would x=x + 1 be more readable, regardless of the background(whether > being introduced to the += form in some other language like C before) ?
To *me*, able.baker.charles.delta += 1 is more easily read than able.baker.charles.delta = able.baker.charles.delta +1 because it is clear that there is one and only one attribute involved, being updated in place, whereas the latter might have been able.baker.charles.delta = able.baker.charley.delta +1 Therefore, as I said originally *I* would use the += form. Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
