FidoClient errors with TypeError: 'NoneType' object is not iterable

[bxm156]

I tried to switch from bravado.requests.HTTPClient, to the FidoClient, but I get the following traceback when trying to use it.

Using virtualenv setup in /nail/home/bmarty/pg/scrubbed/virtualenv_run
Traceback (most recent call last):
  File "test_forward.py", line 63, in <module>
    _request_options=_request_options,
  File "/nail/home/bmarty/pg/scrubbed/virtualenv_run/local/lib/python2.7/site-packages/bravado/client.py", line 264, in __call__
    also_return_response=also_return_response)
  File "/nail/home/bmarty/pg/scrubbed/virtualenv_run/local/lib/python2.7/site-packages/bravado/fido_client.py", line 69, in request
    request_for_twisted = self.prepare_request_for_twisted(request_params)
  File "/nail/home/bmarty/pg/scrubbed/virtualenv_run/local/lib/python2.7/site-packages/bravado/fido_client.py", line 106, in prepare_request_for_twisted
    method=request_params.get('method')
  File "/nail/home/bmarty/pg/scrubbed/virtualenv_run/local/lib/python2.7/site-packages/requests/models.py", line 313, in prepare
    self.prepare_hooks(hooks)
  File "/nail/home/bmarty/pg/scrubbed/virtualenv_run/local/lib/python2.7/site-packages/requests/models.py", line 517, in prepare_hooks
    for event in hooks:
TypeError: 'NoneType' object is not iterable

[lucagiovagnoli]

Hi bxm156, Can you please provide some more info on how to reproduce this?
We've been using FidoClient for months now and I've never seen this traceback

[lcofre]

@bxm156 At least in my case, I forgot to append the .result() to the call of my api.

pet = client.pet.getPetById(petId=42).result()