Problem printing json data from python script - json

Question

I have a python script that should print json data.
This is what I have in my script:
finaldata = {
"date": datetime.datetime.utcnow().isoformat(),
"voltage_mv":emeter["voltage_mv"],
"current_ma":emeter["current_ma"],
"power_mw":emeter["power_mw"] ,
"energy_wh": emeter["total_wh"],
}
print(finaldata)
I am running the script from Node-RED because I need to send the data to a storage account (in json format of course). The Problem is that the data that is being sent looks like this:
{'power_mw': 0, 'date': '2019-04-16T07:12:19.858159', 'energy_wh': 2, 'voltage_mv': 225045, 'current_ma': 20}
when it should look like this in order to be correctly stored in my storage account:
{"power_mw": 0, "date": '2019-04-16T07:12:19.858159', "energy_wh": 2, "voltage_mv": 225045, "current_ma": 20}
(important for later use, since I already get errors in the storage account).
Does anyone know why this is happening and how I can fix it? Thanks in advance

Answer 1

You should use the python json module and dump your python dict into json:
import json
finaldata = {"power_mw": 0, "date": '2019-04-16T07:12:19.858159',
"energy_wh": 2, "voltage_mv": 225045, "current_ma": 20}
print(json.dumps(finaldata))
JSON Reference
For order check linked OrderedDict
or read the OrderedDict collection Reference