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quay/util/canonicaljson.py

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import collections
def canonicalize(json_obj):
"""This function canonicalizes a Python object that will be serialized as JSON.
Args:
json_obj (object): the Python object that will later be serialized as JSON.
Returns:
object: json_obj now sorted to its canonical form.
"""
if isinstance(json_obj, collections.MutableMapping):
sorted_obj = sorted({key: canonicalize(val) for key, val in json_obj.items()}.items())
return collections.OrderedDict(sorted_obj)
elif isinstance(json_obj, (list, tuple)):
return [canonicalize(val) for val in json_obj]
return json_obj