http://bugs.python.org/review/16418/diff/6550/Doc/library/argparse.rst File Doc/library/argparse.rst (right): http://bugs.python.org/review/16418/diff/6550/Doc/library/argparse.rst#newco... Doc/library/argparse.rst:1025: values. These can be handled by passing a container object as the ``choices`` Not your fault, but this should be *choices*. http://bugs.python.org/review/16418/