def delegator(gen):
yielder = yield_from(gen)
for item in yielder:
try:
with yielder:
yielder.send((yield item))
except GeneratorExit:
return_('foo')
return_(yielder.result)
def _exec(executable):
# type: (Executable) -> t.Generator
if isinstance(executable, str):
return_((yield executable))
elif isinstance(executable, Query):
return_(
load(executable.cls, executable.selections,
(yield str(executable))))
else:
raise NotImplementedError('not executable: ' + repr(executable))
def __iter__(self):
response = yield ('max: {}'.format(self.max_items),
'cursor: {}'.format(self.cursor))
objs = response['objects']
next_cursor = response['next_cursor']
if next_cursor is None:
next_query = None
else:
next_query = mylist(max_items=self.max_items, cursor=next_cursor)
return_(snug.Page(objs, next_query=next_query))
def try_until_even(req):
"""an example relay"""
response = yield req
while response % 2:
try:
response = yield 'NOT EVEN!'
except GeneratorExit:
return
except ValueError:
yield 'caught ValueError'
return_(response)
def try_until_positive(req):
"""an example relay"""
response = yield req
while response < 0:
try:
response = yield 'NOT POSITIVE!'
except GeneratorExit:
return
except ValueError:
yield 'caught ValueError'
return_(response)
def __iter__(self):
val = self.start
while val < 100:
try:
sent = yield val
except GeneratorExit:
return
except ValueError:
yield 'caught ValueError'
if sent > val:
val = sent
return_(val * 3)
def middleware(url, query_str):
# type: (str, str) -> snug.Query[Dict[str, JSON]]
response = yield snug.Request(
'POST',
url,
content=json.dumps({'query': query_str}).encode('ascii'),
headers={'Content-Type': 'application/json'}
)
if response.status_code >= 400:
raise HTTPError(response)
content = json.loads(response.content.decode('utf-8'))
if 'errors' in content:
raise ErrorResponse(**content)
return_(content['data'])
def mymax(val):
"""an example generator function"""
while val < 100:
try:
sent = yield val
except GeneratorExit:
return
except ValueError:
sent = yield 'caught ValueError'
except TypeError:
return_('mymax: type error')
if sent > val:
val = sent
return_(val * 3)
def gentype(a, b, *cs, **fs):
"""my docstring"""
return_((yield sum([a, b, sum(cs), sum(fs.values()), a])))
def myquery():
return_((yield snug.GET('my/url')))
def __iter__(self):
redirect = yield '/posts/latest'
redirect = yield redirect.split(':')[1]
response = yield redirect.split(':')[1]
return_(response.decode('ascii'))
def emptygen():
if False:
yield
return_(99)
def oneway_delegator(gen):
yielder = yield_from(gen)
for item in yielder:
with yielder:
yield item
return_(yielder.result)
