New submission from D. Michael Parrish <will.hill.fx@gmail.com>:

...

...

version_info (3, 0, 1, 'final', 0) # I know this is an older version---stuck with it at work. # I did not see this issue in the tracker (380 results for nan). # Perhaps there is better documentation for how to use the issue # tracker. Many of the links on the Dealing with Bugs page--- # https://docs.python.org/3/bugs.html#contributing-to-python # ---are not helpful, e.g., 'contribute' just links back the same # page. # # There are similar problems with inf and -inf isnan(float('nan')) True repr(float('nan')) 'nan' '{0:f}'.format(float('nan')) '-1.#IND00' '{0:F}'.format(float('nan')) '-1.#IND00' '{0:g}'.format(float('nan')) '-1.#IND' '{0:G}'.format(float('nan')) '-1.#IND' '{0:.2f}'.format(float('nan')) '-1.#J'

# c.f. https://docs.python.org/3/library/string.html#formatspec ---------- assignee: docs@python components: Documentation messages: 311393 nosy: ana, docs@python priority: normal severity: normal status: open title: str.format not producing strings for nan argument in accordance with documentation type: behavior _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue32737> _______________________________________