getting a UnicodeEncodeError when trying to write a JSON file

Question

Given input file with content:

{ "symbol": "°C" }

And this code:

import sys import json with open(sys.argv[1], 'r') as ifile, open(sys.argv[2], 'w') as ofile: json.dump(json.load(ifile), ofile, indent=4, ensure_ascii=False)

I get an error:

$ python2.7 play.py input.json output.json Traceback (most recent call last): File "play.py", line 5, in <module> json.dump(json.load(ifile), ofile, indent=4, ensure_ascii=False) File "/usr/lib/python2.7/json/__init__.py", line 190, in dump fp.write(chunk) UnicodeEncodeError: 'ascii' codec can't encode character u'\xb0' in position 1: ordinal not in range(128)

But Python 3 works fine:

$ python3.3 play.py input.json output.json $ cat output.json { "symbol": "°C" }

possible duplicate of UnicodeEncodeError when writing to a file — Tadeck
– Tadeck, Commented Jul 15, 2013 at 22:51

Dhia · Accepted Answer · 2017-01-04 10:58:13Z

You can use the codecs module to deal with it by declaring the encoding of the file:

import sys import json import codecs with codecs.open(sys.argv[1], 'r', 'utf-8') as ifile, codecs.open(sys.argv[2], 'w', 'utf-8') as ofile: json.dump(json.load(ifile), ofile, indent=4, ensure_ascii=False)

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