ordered_jsonload.py

# -*- coding:utf-8 -*-
import timeit

N = 10000
result = timeit.timeit(
    setup="""
import json
data = '''
{
  "x": [1, 2, 3],
  "y": "foo",
  "z": {"a": "a", "b": "b"}
}
'''
""",
    stmt="json.loads(data)",
    number=N
)

result2 = timeit.timeit(
    setup="""
from collections import OrderedDict
import json

data = '''
{
  "x": [1, 2, 3],
  "y": "foo",
  "z": {"a": "a", "b": "b"}
}
'''
""",
    stmt="json.loads(data, object_pairs_hook=OrderedDict)",
    number=N
)

result3 = timeit.timeit(
    setup="""
from collections import OrderedDict
import json

decoder = json.JSONDecoder(object_hook=None, object_pairs_hook=OrderedDict)

data = '''
{
  "x": [1, 2, 3],
  "y": "foo",
  "z": {"a": "a", "b": "b"}
}
'''
""",
    stmt="decoder.decode(data)",
    number=N
)
print(result)
print(result2)
print(result3)

0.138908863068
0.591463088989
0.519216060638