Why am I getting a status code of 422 when making a call to the github api?

See more:

API

Python3.6

The entire contents of my program:

import requests

# Make an API call and store the response.
url = 'https://api.github.com/search/repositories?=language:python&sort=stars'
# headers = {'Accept': 'application/vnd.github.v3+json'}
r = requests.get(url)
print(f"Status code: {r.status_code}")
# Store API response as a variable.
response_dict = r.json()

# Process results.
print(response_dict.keys())

Using python3 to run the program in terminal yields:

Status code: 422
dict_keys(['message', 'errors', 'documentation_url'])

The expected status code is 200. Can anyone tell me what I'm doing wrong, or if there is a good place to test this API call out?

What I have tried:

I've tried testing my API call at Online API Testing Tool | Test Your API Online[^]

and at

postman, where the response was:

    "message": "Validation Failed",
    "errors": [
        {
            "resource": "Search",
            "field": "q",
            "code": "missing"
        }
    ],
    "documentation_url": "https://docs.github.com/v3/search"
}

Not sure what I'm doing wrong, or really if I'm using the API testing tools correctly. Any help is appreciated, thank you!