[New-bugs-announce] [issue21000] json.tool ought to have a help flag

[Benjamin Peterson]

New submission from Benjamin Peterson:

I current get this behavior:
% python3 -m json.tool -h
Traceback (most recent call last):
  File "/usr/lib64/python3.3/runpy.py", line 160, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/lib64/python3.3/runpy.py", line 73, in _run_code
    exec(code, run_globals)
  File "/usr/lib64/python3.3/json/tool.py", line 40, in <module>
    main()
  File "/usr/lib64/python3.3/json/tool.py", line 21, in main
    infile = open(sys.argv[1], 'r')
FileNotFoundError: [Errno 2] No such file or directory: '-h'

Instead of that, json.tool should show a helpful message expalining what it does in response to the -h or --help flags.

----------
components: Library (Lib)
keywords: easy
messages: 214261
nosy: benjamin.peterson
priority: normal
severity: normal
stage: needs patch
status: open
title: json.tool ought to have a help flag
type: enhancement
versions: Python 3.5

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21000>
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