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proc
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self
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root
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lib64
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python3.8
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json
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r"""Command-line tool to validate and pretty-print JSON Usage:: $ echo '{"json":"obj"}' | python -m json.tool { "json": "obj" } $ echo '{ 1.2:3.4}' | python -m json.tool Expecting property name enclosed in double quotes: line 1 column 3 (char 2) """ import argparse import json import sys def main(): prog = 'python -m json.tool' description = ('A simple command line interface for json module ' 'to validate and pretty-print JSON objects.') parser = argparse.ArgumentParser(prog=prog, description=description) parser.add_argument('infile', nargs='?', type=argparse.FileType(encoding="utf-8"), help='a JSON file to be validated or pretty-printed', default=sys.stdin) parser.add_argument('outfile', nargs='?', type=argparse.FileType('w', encoding="utf-8"), 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 outfile = options.outfile sort_keys = options.sort_keys json_lines = options.json_lines with infile, outfile: try: if json_lines: objs = (json.loads(line) for line in infile) else: objs = (json.load(infile), ) for obj in objs: json.dump(obj, outfile, sort_keys=sort_keys, indent=4) outfile.write('\n') except ValueError as e: raise SystemExit(e) if __name__ == '__main__': try: main() except BrokenPipeError as exc: sys.exit(exc.errno)
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