How can I mock APIs in Python for testing?

How can I mock APIs in Python for testing?

You can use libraries like unittest.mock or responses to mock API calls in your tests.

Can you show me an example using unittest.mock?

Sure! Here's a simple example:

from unittest.mock import patch
import requests

@patch('requests.get')
def test_api_call(mock_get):
    mock_get.return_value.status_code = 200
    mock_get.return_value.json.return_value = {'key': 'value'}
    response = requests.get('http://fakeapi.com/data')
    assert response.status_code == 200
    assert response.json() == {'key': 'value'}

What about using the responses library?

With responses, you can easily mock HTTP responses. Here's an example:

import responses
import requests

@responses.activate
def test_api_call():
    responses.add(responses.GET, 'http://fakeapi.com/data', json={'key': 'value'}, status=200)
    response = requests.get('http://fakeapi.com/data')
    assert response.status_code == 200
    assert response.json() == {'key': 'value'}