Saving utf-8 texts in json.dumps as UTF8, not as \u escape sequence

Question

sample code:

>>> import json
>>> json_string = json.dumps(\"ברי צקלה\")
>>> print json_string
\"\\u05d1\\u05e8\\u05d9 \\u05e6\\u05         


        

Answer 1

The following is my understanding var reading answer above and google.

# coding:utf-8
r"""
@update: 2017-01-09 14:44:39
@explain: str, unicode, bytes in python2to3
    #python2 UnicodeDecodeError: 'ascii' codec can't decode byte 0xe4 in position 7: ordinal not in range(128)
    #1.reload
    #importlib,sys
    #importlib.reload(sys)
    #sys.setdefaultencoding('utf-8') #python3 don't have this attribute.
    #not suggest even in python2 #see:http://stackoverflow.com/questions/3828723/why-should-we-not-use-sys-setdefaultencodingutf-8-in-a-py-script
    #2.overwrite /usr/lib/python2.7/sitecustomize.py or (sitecustomize.py and PYTHONPATH=".:$PYTHONPATH" python)
    #too complex
    #3.control by your own (best)
    #==> all string must be unicode like python3 (u'xx'|b'xx'.encode('utf-8')) (unicode 's disappeared in python3)
    #see: http://blog.ernest.me/post/python-setdefaultencoding-unicode-bytes

    #how to Saving utf-8 texts in json.dumps as UTF8, not as \u escape sequence
    #http://stackoverflow.com/questions/18337407/saving-utf-8-texts-in-json-dumps-as-utf8-not-as-u-escape-sequence
"""

from __future__ import print_function
import json

a = {"b": u"中文"}  # add u for python2 compatibility
print('%r' % a)
print('%r' % json.dumps(a))
print('%r' % (json.dumps(a).encode('utf8')))
a = {"b": u"中文"}
print('%r' % json.dumps(a, ensure_ascii=False))
print('%r' % (json.dumps(a, ensure_ascii=False).encode('utf8')))
# print(a.encode('utf8')) #AttributeError: 'dict' object has no attribute 'encode'
print('')

# python2:bytes=str; python3:bytes
b = a['b'].encode('utf-8')
print('%r' % b)
print('%r' % b.decode("utf-8"))
print('')

# python2:unicode; python3:str=unicode
c = b.decode('utf-8')
print('%r' % c)
print('%r' % c.encode('utf-8'))
"""
#python2
{'b': u'\u4e2d\u6587'}
'{"b": "\\u4e2d\\u6587"}'
'{"b": "\\u4e2d\\u6587"}'
u'{"b": "\u4e2d\u6587"}'
'{"b": "\xe4\xb8\xad\xe6\x96\x87"}'

'\xe4\xb8\xad\xe6\x96\x87'
u'\u4e2d\u6587'

u'\u4e2d\u6587'
'\xe4\xb8\xad\xe6\x96\x87'

#python3
{'b': '中文'}
'{"b": "\\u4e2d\\u6587"}'
b'{"b": "\\u4e2d\\u6587"}'
'{"b": "中文"}'
b'{"b": "\xe4\xb8\xad\xe6\x96\x87"}'

b'\xe4\xb8\xad\xe6\x96\x87'
'中文'

'中文'
b'\xe4\xb8\xad\xe6\x96\x87'
"""