On Tue, Dec 22, 2015 at 11:17 AM, Ian Kelly <ian.g.ke...@gmail.com> wrote: > On Dec 21, 2015 4:55 PM, "Terry Reedy" <tjre...@udel.edu> wrote: >> >> Nothing has changed since except for >> https://www.python.org/dev/peps/pep-0498/ >> already added to 3.6. > > https://xkcd.com/927/
The 927ness of it was discussed at length prior to implementation. PEP 498 isn't really another competing string format operation; it's more like an alternative expression format. It's more in competition with this: msg = "The sum of " + str(x) + " and " + str(y) + " is " + str(x+y) + "." which puts the interpolated expressions at the "correct place" in the string - but at the cost of being verbose, messy, and error-prone. Compare: msg = f"The sum of {x} and {y} is {x+y}." (Yes, there's a slight semantic difference; the latter uses format() rather than str(). But otherwise, it's compiled to the "".join(...) equivalent of the repeated concatenation example.) ChrisA -- https://mail.python.org/mailman/listinfo/python-list