Basic Hello World program

[leiliu98]

Hi, I coudn't find a basic Hello World program just to test water of this API so I just followed instructions and copy one from example program, seems fairly straightforward. I do have a basic private app setup and IAM etc, but the program does not work. I am wondering if someone could help me out here. Following is the program, I have all the credentials embedded in the program (for illustration purposes only because of security). I have verified all the credential settings in seller central and IAM, all seem correct.

from sp_api.base import Marketplaces
from sp_api.api import Orders
from sp_api.base import SellingApiException

credentials=dict(
refresh_token='Atzr|IwEBIAeNv4Z2GL3EEPJhaL3j0ivsdfsNF23nbON6xSOgNzfsdfsqhOdxxqdF8O5YJsuHmJQnq_hb5QAt9WUhCPQy9WJQ7QAgo_2ReNtwLN8csjfksdjwerewlkpMcIVGaZMTzAt8oNpO15_Y5rus8PJsP9t-iol9OlB1zfe-jCLchOoWcbsobZuXMGyZ1W4D8Kq6HadFtZwudUoAV1Er0tqt5MWZ2jIqytipKtlgV1KyZtiu6F1qAzc5oGP-6bsynsVDFQzkvgSamYuBQY1cRovqhcDz6VjUpGw1EUWZ1ZKczUn0',
lwa_app_id='amzn1.application-oa2-client.b0707c805aff3fdfdfdd5fb80ad',
lwa_client_secret='a0ba8a4ca9bb68a7f21d811190sfsdfwew3dcaf0eca7edd21a1cd5ddf59712d45',
aws_access_key='AKIAU4HIJJJJJJC2WGGGGG45',
aws_secret_key='QEICGUHGHGHGHGHGHG+Yxxzrg0y/N5VW29ttH',
)

print("to start")
order_client = Orders(credentials=credentials, marketplace=Marketplaces.US)
print ("got order set up")
try:
order = order_client.get_order('111-8737621-6072221')
except SellingApiException as ex:
print (ex)
exit(1)
print(order) # order is an ApiResponse
print(order.payload) # payload contains the original response

derek@derek-ubuntu-V22:~/code/Amazon$ python sp-api.py
to start
got order set up
[{'message': 'Access to requested resource is denied.', 'code': 'Unauthorized', 'details': ''}]