Help Center/ Object Storage Service/ SDK Reference/ Python/ Object-Related APIs (SDK for Python)/ Basic Operations (SDK for Python)/ Downloading an Object (SDK for Python)/ Downloading an Object - Obtaining the Download Progress (SDK for Python)
Updated on 2026-07-31 GMT+08:00
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Downloading an Object - Obtaining the Download Progress (SDK for Python)

You can obtain the download progress when downloading an object in binary, streaming, file-based, or resumable mode.

This example returns the object download progress.

Sample code is as follows:

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import os
import traceback

from obs import ObsClient

# Obtain an AK/SK pair using environment variables (recommended) or import it in other ways. Using hard coding may result in leakage.
# Obtain an AK and SK pair on the management console. For details, see https://support.huaweicloud.com/intl/en-us/usermanual-ca/ca_01_0003.html.
ak = os.getenv("AccessKeyID")
sk = os.getenv("SecretAccessKey")
# If you use a temporary AK/SK pair and a security token to access OBS, obtain them from environment variables.
# security_token = os.getenv("SecurityToken")
# Set server to the endpoint corresponding to the bucket. CN-Hong Kong is used here as an example. Replace it with the one currently in use.
server = "https://obs.ap-southeast-1.myhuaweicloud.com" 

# Create an obsClient instance.
# If you use a temporary AK/SK pair and a security token to access OBS, you must specify security_token when creating an instance.
obs_client = ObsClient(access_key_id=ak, secret_access_key=sk, server=server) 

# Obtain the download progress.
def callback(transferredAmount, totalAmount, totalSeconds): 
    # Obtain the average download rate (KB/s).
    print(transferredAmount * 1.0 / totalSeconds / 1024) 
    # Obtain the download progress in percentage.
    print(transferredAmount * 100.0 / totalAmount) 

try: 
    bucket_name = "examplebucket" 
    object_key = "objectname" 
    # Download an object.
    resp = obs_client.getObject(bucket_name=bucket_name, object_key=object_key, progressCallback=callback) 
    # If status code 2xx is returned, the API is called successfully. Otherwise, the API call fails.
    if resp.status < 300: 
        print('Get Object Succeeded') 
        print('requestId:', resp.requestId) 
        # Read the object content.
        while True: 
            chunk = resp.body.response.read(65536) 
            if not chunk: 
                break 
            print(chunk) 
        resp.body.response.close() 
    else: 
        print('Get Object Failed') 
        print('requestId:', resp.requestId) 
        print('errorCode:', resp.errorCode) 
        print('errorMessage:', resp.errorMessage) 
except Exception: 
    print('Get Object Failed') 
    print(traceback.format_exc())