json serialize a dictionary with tuples as key

Question

Is there a way in Python to serialize a dictionary that is using a tuple as key:

a={(1,2):\'a\'}

simply using json.dumps(a), produces:

Answer 1

from json import load, dump
from ast import literal_eval

x={ (0,1):'la-la la', (0,2):'extricate' }

# save: convert each tuple key to a string before saving as json object
with open('/tmp/test', 'w') as f: dump({str(k):v for k, v in x.items()}, f)

# load in two stages:#
# (i) load json object
with open('/tmp/test', 'r') as f: obj = load(f)

# (ii) convert loaded keys from string back to tuple
d={literal_eval(k):v for k, v in obj.items()}

See: https://stackoverflow.com/a/12337657/2455413