A modification to python's standard library: json/tool.py, which makes it better print JSON containing non-ascii code.

tool.py

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: line 1 column 2 (char 2)

"""
import sys 
import json
import codecs

def main():
    if len(sys.argv) == 1:
        infile = sys.stdin
        outfile = sys.stdout
    elif len(sys.argv) == 2:
        infile = open(sys.argv[1], 'rb')
        outfile = sys.stdout
    elif len(sys.argv) == 3:
        infile = open(sys.argv[1], 'rb')
        outfile = open(sys.argv[2], 'wb')
    else:
        raise SystemExit(sys.argv[0] + " [infile [outfile]]")
    try:
        obj = json.load(infile)
    except ValueError, e:
        raise SystemExit(e)
    s = json.dumps(obj, sort_keys=True, indent=4, ensure_ascii=False)
    outfile.write(codecs.encode(s, 'utf-8'))
    outfile.write('\n')


if __name__ == '__main__':
    main()

Just use this script to replace /usr/lib/python2.7/json/tool.py !

i have the exception :TypeError: coercing to Unicode: need string or buffer, NoneType found,
the script like this
`
import sys
import json
import codecs

def main():
if len(sys.argv) == 1:
infile = sys.stdin
outfile = sys.stdout
elif len(sys.argv) == 2:
infile = open(sys.argv[1], 'rb')
outfile = sys.stdout
elif len(sys.argv) == 3:
infile = open(sys.argv[1], 'rb')
outfile = open(sys.argv[2], 'wb')
else:
raise SystemExit(sys.argv[0] + " [infile [outfile]]")
with infile:
try:
obj = json.load(infile)
except ValueError, e:
raise SystemExit(e)
with outfile:
s = json.dump(obj, outfile, sort_keys=True,indent=4, separators=(',', ': '),ensure_ascii=False)
outfile.write(codecs.encode(s, 'utf-8'))
outfile.write('\n')
`

with outfile:
    s = json.dumps(obj, sort_keys=True, indent=4, separators=(',', ': '), ensure_ascii=False)
    #s = json.dump(obj, outfile, sort_keys=True, indent=4, separators=(',', ': '), ensure_ascii=False)
    outfile.write(codecs.encode(s, 'utf-8'))
    outfile.write('\n')

不太懂 如何去编辑json.tool先收藏了 周末再看看