Hi, If you can share the rest of the script I'd happily take a look (make sure you've edited out any sensitive data).
Generally, you would store the output of your API call into a variable:
my_results = client.api_call("show-group", {"name": "TestGrp"})
depending on what's returned, you might either have a string which contains JSON, or a Python object. If you're using an IDE like Visual Studio Code or PyCharm, you should be able to debug the script and add a breakpoint after this line to see the class of my_results. If it's a string, you can use "my_ object = json.loads(my_results)", if it's an object you can start using it however you like (again, the debug panel will help with what methods to use to interrogate the data).