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bpo-33927: Pass stdin and stdout are default arguments to argpars infile/outfile #11992

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Merged
vstinner merged 1 commit into from
May 14, 2019
Merged

bpo-33927: Pass stdin and stdout are default arguments to argpars infile/outfile #11992

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10 changes: 6 additions & 4 deletions Lib/json/tool.py
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Original file line number Diff line number Diff line change
Expand Up @@ -21,17 +21,19 @@ def main():
'to validate and pretty-print JSON objects.')
parser = argparse.ArgumentParser(prog=prog, description=description)
parser.add_argument('infile', nargs='?', type=argparse.FileType(),
help='a JSON file to be validated or pretty-printed')
help='a JSON file to be validated or pretty-printed',
default=sys.stdin)
parser.add_argument('outfile', nargs='?', type=argparse.FileType('w'),
help='write the output of infile to outfile')
help='write the output of infile to outfile',
default=sys.stdout)
parser.add_argument('--sort-keys', action='store_true', default=False,
help='sort the output of dictionaries alphabetically by key')
parser.add_argument('--json-lines', action='store_true', default=False,
help='parse input using the jsonlines format')
options = parser.parse_args()

infile = options.infile or sys.stdin
outfile = options.outfile or sys.stdout
infile = options.infile
outfile = options.outfile
sort_keys = options.sort_keys
json_lines = options.json_lines
with infile, outfile:
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