On Mon, Dec 13, 2010 at 11:54 AM, Guido van Rossum <guido@python.org> wrote:
I'm at least +0 on
allowing trailing commas in the situation the OP mentioned.
FWIW, I am also about +0.5 on allowing trailing comma. Note that in a
similar situation, the C standardization committee has erred on the
side of consistency:
"""
A new feature of C99: a common extension in many implementations
allows a trailing comma after the list of enumeration constants. The
Committee decided to adopt this feature as an innocuous extension that
mirrors the trailing commas allowed in initializers.
""" http://www.open-std.org/jtc1/sc22/wg14/www/C99RationaleV5.10.pdf
Similarly, I find allowing trailing comma in keyword only arguments
lists to be an innocuous extension that mirrors the trailing commas
allowed in the positional arguments lists.