How to pass json string as a command line argument using python

Question

I have written a code to parse and get the values.This is the code:


    
with open("config.json","r")as infile:
     inputs = json.load(infile)
for item in range(len(inputs["config"])):
     IP = inputs["config"][item]["IP"]
     PORT = inputs["config"][item]["PORT"]
     USERNAME = inputs["config"][item]["USERNAME"]
     PASSWORD = inputs["config"][item]["PASSWORD"]
     ENABLE = inputs["config"][item]["ENABLE"]
     if ENABLE == "True":

But, instead of opening a file like this, I would like to pass the json_string as a command line argument so it can read from command line and get the values in json_string to the variables. I have a json_string like this:


    
{
"cameras": [
{
"ipAddress": "10.27.25.164",
"url": "rtsp://admin:[email protected]/cam/realmonitor?channel=1&subtype=0&unicast=true&proto=Onvif",
"userName": "admin",
"userPasswd": "Aviro",
"port": "80"
}
]
}

I would like to know, how to pass json_string as a command line argument and what are the changes i need to modify in the code, so the values in the json_string assigned to the given variables.

can anyone help me with this???

passing the json is clumsy .. cant you just pass the file name? — balderman
– balderman, Commented Nov 2, 2020 at 15:28
Searching with variations of python pass a string as a command line argument site:stackoverflow.com should get you on your way. — wwii
– wwii, Commented Nov 2, 2020 at 15:31

Sai · Accepted Answer · 2020-11-02 16:33:12Z

8

Yes read from command line arguments like this:

import sys,json
inputs = json.loads(sys.argv[1])

And pass it like:

SCRIPT.py '{"cameras": [{"ipAddress": "10.27.25.164","url": "rtsp://admin:[email protected]/cam/realmonitor?channel=1&subtype=0&unicast=true&proto=Onvif","userName": "admin","userPasswd": "Aviro","port": "80"}]}'

edited Nov 2, 2020 at 16:33

Sai

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answered Nov 2, 2020 at 15:28

avarice

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