Terry J. Reedy added the comment: Either leading sign, '+' or '-', cause string interpretation, so I think 'unsigned integer' should be the term in the doc.
>>> '{0[-1]}'.format({'-1': 'neg int key'}) 'neg int key' >>> '{0[+1]}'.format({'+1': 'neg int key'}) 'neg int key' >>> '{0[+1]}'.format([1,2,3]) Traceback (most recent call last): File "<pyshell#16>", line 1, in <module> '{0[+1]}'.format([1,2,3]) TypeError: list indices must be integers, not str ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue7951> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com