json seems faster than simplejson in both cases of loads and dumps in latest version
Tested versions:
Results:
>>> def test(obj, call, data, times):
... s = datetime.now()
... print("calling: ", call, " in ", obj, " ", times, " times")
... for _ in range(times):
... r = getattr(obj, call)(data)
... e = datetime.now()
... print("total time: ", str(e-s))
... return r
>>> test(json, "dumps", data, 10000)
calling: dumps in <module 'json' from 'C:\\Users\\jophine.antony\\AppData\\Local\\Programs\\Python\\Python36-32\\lib\\json\\__init__.py'> 10000 times
total time: 0:00:00.054857
>>> test(simplejson, "dumps", data, 10000)
calling: dumps in <module 'simplejson' from 'C:\\Users\\jophine.antony\\AppData\\Local\\Programs\\Python\\Python36-32\\lib\\site-packages\\simplejson\\__init__.py'> 10000 times
total time: 0:00:00.419895
'{"1": 100, "2": "acs", "3.5": 3.5567, "d": [1, "23"], "e": {"a": "A"}}'
>>> test(json, "loads", strdata, 1000)
calling: loads in <module 'json' from 'C:\\Users\\jophine.antony\\AppData\\Local\\Programs\\Python\\Python36-32\\lib\\json\\__init__.py'> 1000 times
total time: 0:00:00.004985
{'1': 100, '2': 'acs', '3.5': 3.5567, 'd': [1, '23'], 'e': {'a': 'A'}}
>>> test(simplejson, "loads", strdata, 1000)
calling: loads in <module 'simplejson' from 'C:\\Users\\jophine.antony\\AppData\\Local\\Programs\\Python\\Python36-32\\lib\\site-packages\\simplejson\\__init__.py'> 1000 times
total time: 0:00:00.040890
{'1': 100, '2': 'acs', '3.5': 3.5567, 'd': [1, '23'], 'e': {'a': 'A'}}
For versions:
json was faster than simplejson during dumps operation but both maintained the same speed during loads operations