$ ipython Python 3.6.0 |Anaconda 4.3.1 (x86_64)| (default, Dec 23 2016, 13:19:00) Type "copyright", "credits" or "license" for more information.
IPython 5.1.0 -- An enhanced Interactive Python. ? -> Introduction and overview of IPython's features. %quickref -> Quick reference. help -> Python's own help system. object? -> Details about 'object', use 'object??' for extra details.
In [1]: import json
In [2]: json.dumps('你好') Out[2]: '"\\u4f60\\u597d"'