我遇到的问题是当我尝试加载 pickled 对象。我尝试使用 pickle.loads
和 pickle.load
以下是结果:
pickle.loads
:
TypeError: 'str' does not support the buffer interface
pickle.load
:
TypeError: file must have 'read' and 'readline' attributes
谁能告诉我在这个过程中我做错了什么?
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change_log["swiss-names"] = {name: "withdrawn"}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}
最佳答案
您需要先读取文件(作为二进制bytes
)并使用pickle.loads()
,或者传递一个打开的文件pickle.load()
命令的对象。后者更可取:
with open('out/cache/' +hashed_url, 'rb') as pickle_file:
content = pickle.load(pickle_file)
这两种方法都不支持从文件名加载 pickle 。
关于python - 无法加载 pickle 对象,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/18261898/