如何在使用python从云存储桶下载文件时显示进度条

pip install boto3 tqdm

import boto3

# 创建 COS 客户端
cos = boto3.client('cos', region_name='ap-guangzhou', aws_access_key_id='your-access-key-id',
                   aws_secret_access_key='your-secret-access-key')

import boto3
from tqdm import tqdm

# 创建 COS 客户端
cos = boto3.client('cos', region_name='ap-guangzhou', aws_access_key_id='your-access-key-id',
                   aws_secret_access_key='your-secret-access-key')

# 云存储桶和文件路径
bucket_name = 'your-bucket-name'
object_key = 'your-object-key'

# 获取文件大小
response = cos.head_object(Bucket=bucket_name, Key=object_key)
file_size = int(response['ContentLength'])

# 下载文件并显示进度条
with tqdm(total=file_size, unit='B', unit_scale=True, ncols=80) as progress_bar:
    cos.download_file(bucket_name, object_key, 'local-file-path',
                      Callback=lambda chunk: progress_bar.update(len(chunk)))