无法加载酸洗对象

我遇到的问题是当我试图加载 Pickled (腌制的)对象时。我试过同时使用 pickle.loads和 pickle.load，结果如下:

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TypeError: ‘ str’不支持缓冲区接口

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文件必须具有“ read”和“ readline”属性

有人能告诉我在这个过程中我做错了什么吗？

elif str(parser) == "SwissWithdrawn_Parser":
# swissprot name changes
print("Gathering SwissProt update info...")
cache_hits = 0
cache_misses = 0
files = set()


for f in os.listdir("out/cache/"):
if os.path.isfile("out/cache/" + f):
files.add(f)


for name in sp_lost_names:


cached = False
url = (
"http://www.uniprot.org/uniprot/?query=mnemonic%3a"
+ name
+ "+active%3ayes&format=tab&columns=entry%20name"
)
hashed_url = str(hash(url))


################### For Testing Only - use cache ##################
if hashed_url in files:
cached = True
cache_hits += 1
content = pickle.loads("out/cache/" + hashed_url)  # <-- problematic line
else:
cache_misses += 1
content = urllib.request.urlopen(url)


# get the contents returned from the HTTPResponse object
content_list = [x.decode().strip() for x in content.readlines()]
if not cached:
with open("out/cache/" + hashed_url, "wb") as fp:
pickle.dump(content_list, fp)
####################################################################


# no replacement
if len(content_list) is 0:
change_log["swiss-names"] = {name: "withdrawn"}
# get the new name
else:
new_name = content_list[1]
change_log["swiss-names"] = {name: new_name}