def all_isbns():
l = []
for k in redis.keys():
if k[0:4] == "rfid":
continue
try:
[isbn, field] = k.split(":")
l.append(isbn)
except:
continue
return list(Set(l))
def collect_data():
if caches_defined():
global entries_cache, all_attributes_strings_cache
return (entries_cache, all_attributes_strings_cache)
entries = {}
all_attributes_strings = []
for k in redis.keys():
a = redis.get(k)
if k[0:4] == "rfid":
continue
try:
[isbn, field] = k.split(":")
try:
entries[isbn][field] = a
except:
entries[isbn] = {}
entries[isbn][field] = a
if field == "author" or field == "book_title":
all_attributes_strings.append(a)
except:
continue
# reshape
entry_list = []
for isbn in entries.keys():
field_dict = entries[isbn]
field_dict['isbn'] = isbn
entry_list.append(field_dict)
# sort
try:
sorted_entry_list = sorted(entry_list, key=lambda dicty: dicty['book_title'])
except:
sorted_entry_list = []
entries_cache = sorted_entry_list
all_attributes_strings_cache = json.dumps(all_attributes_strings).encode('utf8')
return (entries_cache, all_attributes_strings_cache)