def check_status_code(response, codes=None):
"""Check HTTP status code and raise exception if incorrect.
:param Response response: HTTP response
:param codes: List of accepted codes or callable
:raises: ApiError if code invalid
"""
codes = codes or [httplib.OK]
checker = (codes
if callable(codes) else lambda resp: resp.status_code in codes)
if not checker(response):
raise exceptions.ApiError(response, response.json())
def result_or_error(response):
"""Get `result` field from Betfair response or raise exception if not
found.
:param Response response:
:raises: ApiError if no results passed
"""
data = response.json()
result = data.get('result')
if result is not None:
return result
raise exceptions.ApiError(response, data)