def fetch(method, url, loop):
session = ClientSession(loop=loop)
if hasattr(session, '__aenter__'):
yield from session.__aenter__()
else:
session.__enter__()
try:
_method = getattr(session, method)
try:
response = yield from asyncio.wait_for(_method(url),
timeout=None,
loop=loop)
except TypeError:
response = yield from asyncio.wait_for(_method(url), timeout=None)
text = yield from response.text()
finally:
if hasattr(session, '__aexit__'):
yield from session.__aexit__(*sys.exc_info())
else:
session.__exit__(*sys.exc_info())
return text
