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[英]How Can I Python Function Export and Recall (Pickle,Joblib,Dump)?
[英]How do I dump a joblib or pickle file in Bluemix Object Storage?
我正在使用在Bluemix上運行Flask的Python應用程序。 我知道如何使用swiftclient模塊的對象存儲來創建容器並在其中保存文件,但是如何轉儲其中包含的joblib或pickle文件? 如何在我的Python程序中加載它?
這是存儲簡單文本文件的代碼。
import swiftclient
app = Flask(__name__)
CORS(app)
cloudant_service = json.loads(os.environ['VCAP_SERVICES'])['Object-Storage'][0]
objectstorage_creds = cloudant_service['credentials']
if objectstorage_creds:
auth_url = objectstorage_creds['auth_url'] + '/v3' #authorization URL
password = objectstorage_creds['password'] #password
project_id = objectstorage_creds['projectId'] #project id
user_id = objectstorage_creds['userId'] #user id
region_name = objectstorage_creds['region'] #region name
def predict_joblib():
print('satart')
conn = swiftclient.Connection(key=password,authurl=auth_url,auth_version='3',os_options={"project_id": project_id,"user_id": user_id,"region_name": region_name})
container_name = 'new-container'
# File name for testing
file_name = 'requirment.txt'
# Create a new container
conn.put_container(container_name)
print ("nContainer %s created successfully." % container_name)
# List your containers
print ("nContainer List:")
for container in conn.get_account()[1]:
print (container['name'])
# Create a file for uploading
with open(file_name, 'w') as example_file:
conn.put_object(container_name,file_name,contents= "",content_type='text/plain')
# List objects in a container, and prints out each object name, the file size, and last modified date
print ("nObject List:")
for container in conn.get_account()[1]:
for data in conn.get_container(container['name'])[1]:
print ('object: {0}t size: {1}t date: {2}'.format(data['name'], data['bytes'], data['last_modified']))
# Download an object and save it to ./my_example.txt
obj = conn.get_object(container_name, file_name)
with open(file_name, 'w') as my_example:
my_example.write(obj[1])
print ("nObject %s downloaded successfully." % file_name)
@app.route('/')
def hello():
dff = predict_joblib()
return 'Welcome to Python Flask!'
@app.route('/signUp')
def signUp():
return 'signUp'
port = os.getenv('PORT', '5000')
if __name__ == "__main__":
app.debug = True
app.run(host='0.0.0.0', port=int(port))
由於file.open
和pickle.dumps
返回python docs上的字節對象:
pickle.dumps(obj,protocol = None,*,fix_imports = True)將對象的pickled表示作為bytes對象返回,而不是將其寫入文件。
open(name [,mode [,buffering]])打開一個文件,返回文件對象一節中描述的文件類型的對象。 如果無法打開文件,則引發IOError。 打開文件時,最好使用open()而不是直接調用文件構造函數。
您可以直接處理要存儲為obj
:
# Create a file for uploading
file = pickle.dumps(obj)
conn.put_object(container_name,file,contents= "",content_type='application/python-pickle')
內容類型的這種變化是由http協議中的標准引起的。 這是我從另一個問題得到的,請檢查。 就像聲明的那樣:
這是事實上的標准。 RFC2046規定:4.5.3。 其他應用程序子類型預計未來將定義“應用程序”的許多其他子類型。 MIME實現必須至少將任何未識別的子類型視為等同於“application / octet-stream”。 因此,對於非pickle-aware系統,流將看起來像任何其他八位字節流,但對於啟用pickle的系統,這是至關重要的信息
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