What are the status codes in server responses?

1xx Informational: The request has been received, and the process is continuing. 2xx Success: The request was successfully received, understood, and accepted. 3xx Redirection: Further action must be taken to complete the request. 4xx Client Error: The request contains incorrect syntax or cannot be fulfilled. 5xx Server Error: The server failed to fulfill a valid request.

Examples of common statuses:

Status	Description	Category
100	Continue	Informational
200	OK	Success
201	Created	Success
204	No Content	Success
301	Moved Permanently	Redirection
302	Found	Redirection
400	Bad Request	Client Error
401	Unauthorized	Client Error
403	Forbidden	Client Error
404	Not Found	Client Error
500	Internal Server Error	Server Error
502	Bad Gateway	Server Error
503	Service Unavailable	Server Error

For automated API testing, it is important to check not only the response body but also the correct status code.

import requests

url = "https://example.com/api/resource"
response = requests.get(url)

# Check for status 200 OK
assert response.status_code == 200, f"Expected status code 200, but got {response.status_code}"