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                <textarea name="file_content" style="width:100%; height:400px; font-family:monospace;">r&quot;&quot;&quot;Command-line tool to validate and pretty-print JSON

Usage::

    $ echo &#039;{&quot;json&quot;:&quot;obj&quot;}&#039; | python -m json.tool
    {
        &quot;json&quot;: &quot;obj&quot;
    }
    $ echo &#039;{ 1.2:3.4}&#039; | python -m json.tool
    Expecting property name enclosed in double quotes: line 1 column 3 (char 2)

&quot;&quot;&quot;
import argparse
import json
import sys
from pathlib import Path


def main():
    prog = &#039;python -m json.tool&#039;
    description = (&#039;A simple command line interface for json module &#039;
                   &#039;to validate and pretty-print JSON objects.&#039;)
    parser = argparse.ArgumentParser(prog=prog, description=description)
    parser.add_argument(&#039;infile&#039;, nargs=&#039;?&#039;,
                        type=argparse.FileType(encoding=&quot;utf-8&quot;),
                        help=&#039;a JSON file to be validated or pretty-printed&#039;,
                        default=sys.stdin)
    parser.add_argument(&#039;outfile&#039;, nargs=&#039;?&#039;,
                        type=Path,
                        help=&#039;write the output of infile to outfile&#039;,
                        default=None)
    parser.add_argument(&#039;--sort-keys&#039;, action=&#039;store_true&#039;, default=False,
                        help=&#039;sort the output of dictionaries alphabetically by key&#039;)
    parser.add_argument(&#039;--no-ensure-ascii&#039;, dest=&#039;ensure_ascii&#039;, action=&#039;store_false&#039;,
                        help=&#039;disable escaping of non-ASCII characters&#039;)
    parser.add_argument(&#039;--json-lines&#039;, action=&#039;store_true&#039;, default=False,
                        help=&#039;parse input using the JSON Lines format. &#039;
                        &#039;Use with --no-indent or --compact to produce valid JSON Lines output.&#039;)
    group = parser.add_mutually_exclusive_group()
    group.add_argument(&#039;--indent&#039;, default=4, type=int,
                       help=&#039;separate items with newlines and use this number &#039;
                       &#039;of spaces for indentation&#039;)
    group.add_argument(&#039;--tab&#039;, action=&#039;store_const&#039;, dest=&#039;indent&#039;,
                       const=&#039;\t&#039;, help=&#039;separate items with newlines and use &#039;
                       &#039;tabs for indentation&#039;)
    group.add_argument(&#039;--no-indent&#039;, action=&#039;store_const&#039;, dest=&#039;indent&#039;,
                       const=None,
                       help=&#039;separate items with spaces rather than newlines&#039;)
    group.add_argument(&#039;--compact&#039;, action=&#039;store_true&#039;,
                       help=&#039;suppress all whitespace separation (most compact)&#039;)
    options = parser.parse_args()

    dump_args = {
        &#039;sort_keys&#039;: options.sort_keys,
        &#039;indent&#039;: options.indent,
        &#039;ensure_ascii&#039;: options.ensure_ascii,
    }
    if options.compact:
        dump_args[&#039;indent&#039;] = None
        dump_args[&#039;separators&#039;] = &#039;,&#039;, &#039;:&#039;

    with options.infile as infile:
        try:
            if options.json_lines:
                objs = (json.loads(line) for line in infile)
            else:
                objs = (json.load(infile),)

            if options.outfile is None:
                out = sys.stdout
            else:
                out = options.outfile.open(&#039;w&#039;, encoding=&#039;utf-8&#039;)
            with out as outfile:
                for obj in objs:
                    json.dump(obj, outfile, **dump_args)
                    outfile.write(&#039;\n&#039;)
        except ValueError as e:
            raise SystemExit(e)


if __name__ == &#039;__main__&#039;:
    try:
        main()
    except BrokenPipeError as exc:
        sys.exit(exc.errno)
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