def item_lookup(self, item_ids):
"""
Lookup of the item with the given id on Amazon. Returns it values or None if something went wrong.
:param item_ids: the item ids
:type item_ids: list
:return: the values of the item
:rtype: dict
"""
logger.info('starting lookup for ASINs %s', ', '.join(item_ids))
item_response = self.lookup_at_amazon(item_ids)
if getattr(item_response, 'items') is None:
logger.error(
'Request for item lookup (ResponseGroup: %s, ASINs: %s) returned nothing',
app_settings.PRICE_MONITOR_PA_RESPONSE_GROUP,
', '.join(item_ids),
)
return dict()
if item_response.items.request.isvalid.string == 'True':
# the dict that will contain a key for every ASIN and as value the parsed values
product_values = dict()
for item_node in item_response.find_all(['item']):
# parse the values
item_values = {
'asin': item_node.asin.string,
'title': item_node.itemattributes.title.string,
'artist': item_node.itemattributes.artist.string if item_node.itemattributes.artist is not None else None,
'isbn': self.__get_item_attribute(item_node, 'isbn'),
'eisbn': self.__get_item_attribute(item_node, 'eisbn'),
'binding': item_node.itemattributes.binding.string,
'date_publication': self.format_datetime(self.__get_item_attribute(item_node, 'publicationdate')),
'date_release': self.format_datetime(self.__get_item_attribute(item_node, 'releasedate')),
'large_image_url': item_node.largeimage.url.string if item_node.largeimage.url is not None else None,
'medium_image_url': item_node.mediumimage.url.string if item_node.mediumimage.url is not None else None,
'small_image_url': item_node.smallimage.url.string if item_node.smallimage.url is not None else None,
'offer_url': utils.get_offer_url(item_node.asin.string),
'audience_rating': self.__get_item_attribute(item_node, 'audiencerating'),
}
# check if there are offers, if so add price
if item_node.offers is not None and int(item_node.offers.totaloffers.string) > 0:
item_values['price'] = float(int(item_node.offers.offer.offerlisting.price.amount.string) / 100)
item_values['currency'] = item_node.offers.offer.offerlisting.price.currencycode.string
# insert into main dict
product_values[item_values['asin']] = item_values
# check if all ASINs are included, if not write error message to log
failed_asins = []
for asin in item_ids:
if asin not in product_values.keys():
failed_asins.append(asin)
if failed_asins:
logger.error('Lookup for the following ASINs failed: %s', ', '.join(failed_asins))
# if there is at least a single ASIN in the list, return the list, else None
return dict() if len(product_values) == 0 else product_values
else:
logger.error(
'Request for item lookup (ResponseGroup: %s, ASINs: %s) was not valid',
app_settings.PRICE_MONITOR_PA_RESPONSE_GROUP,
', '.join(item_ids),
)
return dict()
def item_lookup(self, item_ids):
"""
Lookup of the item with the given id on Amazon. Returns it values or None if something went wrong.
:param item_ids: the item ids
:type item_ids: list
:return: the values of the item
:rtype: dict
"""
logger.info('starting lookup for ASINs %s', ', '.join(item_ids))
item_response = self.lookup_at_amazon(item_ids)
if getattr(item_response, 'items') is None:
logger.error(
'Request for item lookup (ResponseGroup: %s, ASINs: %s) returned nothing',
app_settings.PRICE_MONITOR_PA_RESPONSE_GROUP,
', '.join(item_ids),
)
return dict()
if item_response.items.request.isvalid.string == 'True':
# the dict that will contain a key for every ASIN and as value the parsed values
product_values = dict()
for item_node in item_response.find_all(['item']):
# parse the values
try:
isbn = self.__get_item_attribute(item_node, 'isbn')
eisbn = self.__get_item_attribute(item_node, 'eisbn')
if eisbn is None and isbn is not None:
if len(isbn) == 13:
eisbn = isbn
isbn = None
item_values = {
'asin':
item_node.asin.string,
'title':
item_node.itemattributes.title.string,
'artist':
item_node.itemattributes.artist.string if
item_node.itemattributes.artist is not None else None,
'isbn':
isbn,
'eisbn':
eisbn,
'binding':
item_node.itemattributes.binding.string,
'date_publication':
self.format_datetime(
self.__get_item_attribute(item_node,
'publicationdate')),
'date_release':
self.format_datetime(
self.__get_item_attribute(item_node,
'releasedate')),
'large_image_url':
item_node.largeimage.url.string
if item_node.largeimage.url is not None else None,
'medium_image_url':
item_node.mediumimage.url.string
if item_node.mediumimage.url is not None else None,
'small_image_url':
item_node.smallimage.url.string
if item_node.smallimage.url is not None else None,
'offer_url':
utils.get_offer_url(item_node.asin.string),
'audience_rating':
self.__get_item_attribute(item_node, 'audiencerating'),
}
# check if there are offers, if so add price
if item_node.offers is not None and int(
item_node.offers.totaloffers.string) > 0:
item_values['price'] = float(
int(item_node.offers.offer.offerlisting.price.
amount.string) / 100)
item_values[
'currency'] = item_node.offers.offer.offerlisting.price.currencycode.string
# insert into main dict
product_values[item_values['asin']] = item_values
except AttributeError:
raise
logger.error(
'fetching item values from returned XML for ASIN %s failed',
item_node.asin)
# check if all ASINs are included, if not write error message to log
failed_asins = []
for asin in item_ids:
if asin not in product_values.keys():
failed_asins.append(asin)
if failed_asins:
logger.error('Lookup for the following ASINs failed: %s',
', '.join(failed_asins))
# if there is at least a single ASIN in the list, return the list, else None
return dict() if len(product_values) == 0 else product_values
else:
logger.error(
'Request for item lookup (ResponseGroup: %s, ASINs: %s) was not valid',
app_settings.PRICE_MONITOR_PA_RESPONSE_GROUP,
', '.join(item_ids),
)
return dict()
def test_get_offer_url(self):
self.assertEqual('http://www.amazon.de/dp/X1234567890/?tag=sample-assoc-tag', utils.get_offer_url('X1234567890'))
def test_get_offer_url(self):
"""Test the offer url function"""
self.assertEqual('http://www.amazon.de/dp/X1234567890/?tag=sample-assoc-tag', utils.get_offer_url('X1234567890'))
