Mock requests without responses. Useful, for example, if you want to simulate non-status-code side effects like timeouts. It's a hack, but it works

gistfile1.py

class AmazonResponseMocker():
    def __init__(self, response=None, timeout=False):
        import requests
        self.response = response
        self.timeout = timeout
        self.get = requests.get

    def __enter__(self):
        def timeout(*args, **kwargs):
            from requests.exceptions import Timeout
            raise Timeout()

        def response(*args, **kwargs):
            from collections import namedtuple
            httpresponse = namedtuple('FakedResponse', ['status_code', 'text'])
            return httpresponse(status_code=200, text=self.response)

        if self.timeout:
            module.to.mocks.get.import = MagicMock().side_effect = timeout
        else:
            module.to.mocks.get.import = response

    def __exit__(self, exc_type, exc_val, exc_tb):
        module.to.mocks.get.import = self.get