如何在python中將數據流式傳輸到azure塊blob

Question

我想用python將數據流式傳輸到azure塊blob。下面的代碼創建了blob，但以零字節結束。我該如何做這項工作？

import io 
import struct 
from azure.storage.blob import BlockBlobService 

storage = BlockBlobService('acct-xxx', 'key-xxx') 
stream = io.BytesIO() 
storage.create_blob_from_stream("mycontainer", "myblob", stream) 
stream.write(struct.pack("d", 12.34)) 
stream.write(struct.pack("d", 56.78)) 
stream.close() 

Answer 1

看來你已經錯過了代碼的關鍵行：

stream.seek（0）

我設置流的Position property 0，那麼你的代碼工作。

import io 
import struct 
from azure.storage.blob import BlockBlobService 

storage = BlockBlobService('acct-xxx', 'key-xxx') 
stream = io.BytesIO() 

stream.write(struct.pack("d", 12.34)) 
stream.write(struct.pack("d", 56.78)) 
stream.seek(0) 
storage.create_blob_from_stream("mycontainer", "myblob", stream) 
stream.close() 

您可以參考這個線程Azure storage: Uploaded files with size zero bytes。