[Python] Odd errors when trying to verify a requests.post call using pytest-mockito

I'm trying out the pytest-mockito library for some unit testing (I'm primarily a kotlin/java engineer and I think the mockito syntax reads a bit nicer). Most of it makes sense, but I'm running into a weird error when trying to verify a post request.

class TestSuite:
def test_verify_we_sent_data_somewhere(self):
api_url = "http://www.somebooksearch.biz/search"
payload = {"title": "An updated title", "isbn": 12345}

update_book(payload)

verify(requests).post(api_url, data=None, json=payload)


# Implementation:

def update_book(payload):
requests.post("http://www.somebooksearch.biz/search", json=payload)


When I fire my test case I get the error:

verify(requests).post(api_url, json=payload, **kwargs) E mockito.mockito.ArgumentError: obj '<module 'requests' from '/Users/cschmitz/Engineering/projects/classroom-book-tracker/.venv/lib/python3.11/site-packages/requests/init.py'>' is not registered

example_test.py:93: ArgumentError
​

It's weird though because I have a different test case where I'm mocking a get request and it passes just fine:

def test_mock_an_external_library_but_without_comments(self):
api_url = "http://www.somebooksearch.biz/search"

mock_response = mock({
"json": lambda: {"books": [{"title": "Some book title", "isbn": "123456"}]}
})

when(requests).get(api_url).thenReturn(mock_response)

actual = get_book_list()

assert actual == [{"title": "Some book title", "isbn": "123456"}]


# Implementation
def get_book_list():
response = requests.get("http://www.somebooksearch.biz/search")
data = response.json()
return data["books"]


I see it's saying there's an argument error, but I'm not sure exactly what it means. I know the library's walkthrough says that the mock arguments are really picky, but I'm not exactly sure what I'm missing or have wrong. Any help is appreciated!

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