cpython/Lib/json/tool.py at 3.5 · python/cpython · GitHub

Repository navigation

History

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 collections

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(),

help='a JSON file to be validated or pretty-printed')

parser.add_argument('outfile', nargs='?', type=argparse.FileType('w'),

help='write the output of infile to outfile')

parser.add_argument('--sort-keys', action='store_true', default=False,

help='sort the output of dictionaries alphabetically by key')

options = parser.parse_args()

infile = options.infile or sys.stdin

outfile = options.outfile or sys.stdout

sort_keys = options.sort_keys

with infile:

try:

if sort_keys:

obj = json.load(infile)

else:

obj = json.load(infile,

object_pairs_hook=collections.OrderedDict)

except ValueError as e:

raise SystemExit(e)

with outfile:

json.dump(obj, outfile, sort_keys=sort_keys, indent=4)

outfile.write('\n')

if __name__ == '__main__':

main()

cpython/Lib/json/tool.py at 3.5 · python/cpython · GitHub

Repository navigation

Expand file tree

Breadcrumbs

tool.py

Latest commit

History

Breadcrumbs

tool.py

File metadata and controls