def _in_pairs(iterable):
# Creates iterator that iterates over the list in pairs:
# for a, b in _in_pairs([0, 1, 2, 3, 4]):
# print(a, b)
#
# will print:
# 0, 1
# 2, 3
# 4, None
shared_iter = iter(iterable)
# Note that zip_longest is a compat import that uses
# the itertools izip_longest. This creates an iterator,
# this call below does _not_ immediately create the list
# of pairs.
return zip_longest(shared_iter, shared_iter)
def test_result_key_iters(self):
for i in range(5):
key_name = 'key/%s/%s' % (i, i)
self.create_object(key_name)
key_name2 = 'key/%s' % i
self.create_object(key_name2)
time.sleep(3)
paginator = self.client.get_paginator('list_objects')
generator = paginator.paginate(MaxKeys=2,
Prefix='key/',
Delimiter='/',
Bucket=self.bucket_name)
iterators = generator.result_key_iters()
response = defaultdict(list)
key_names = [i.result_key for i in iterators]
for vals in zip_longest(*iterators):
for k, val in zip(key_names, vals):
response.setdefault(k.expression, [])
response[k.expression].append(val)
self.assertIn('Contents', response)
self.assertIn('CommonPrefixes', response)