New submission from Jacopo Nespolo: Argparse fails to recognise negative numbers in scientific notation as valid numbers.
Example: Suppose the program test.py has this option. par.add_argument('-a', type=float) then './test.py -a -1e5' will fail, as well as -1.0e-4, -.5E+4 and variations thereof. Furthermore, at the current state, it seems that argparse does not recognize -1. as a valid float either. I tried to hack argparse.py myself, and I believe the patch attached should fix this issue. The base version of argparse.py is the one from Python 3.4.2 as found in Debian Sid. The modified regular expression seemed to behave correctly in all test cases I could come up with. ---------- components: Library (Lib) files: argparse.patch keywords: patch messages: 229689 nosy: jnespolo priority: normal severity: normal status: open title: float arguments in scientific notation not supported by argparse type: enhancement versions: Python 3.4 Added file: http://bugs.python.org/file36972/argparse.patch _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue22672> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com