带有进度条的S3 Python下载
带有进度条的S3 Python下载
提问于 2020-01-01 10:37:44
我不能评论我改编这段代码(Track download progress of S3 file using boto3 and callbacks)的初始线程，所以希望有人能在这里帮助我。我可以使用此代码来显示文件上传的进度条，现在我需要从亚马逊网络服务S3下载文件做同样的事情。任何帮助都将不胜感激！
我知道我需要从S3而不是从本地文件系统获取文件的大小。我确信我需要调整一些愚蠢的代码才能让它正常工作。希望有人能给我们一些启示。:)
def upload_to_aws(local_file, bucket, s3_file):
s3 = boto3.client('s3', aws_access_key_id=s3ak,
aws_secret_access_key=s3sk)
statinfo = os.stat(local_file)
up_progress = progressbar.progressbar.ProgressBar(maxval=statinfo.st_size)
up_progress.start()
def upload_progress(chunk):
up_progress.update(up_progress.currval + chunk)
try:
s3.upload_file(local_file, bucket, s3_file, Callback=upload_progress)
up_progress.finish()
print("Upload Successful")
return True
except FileNotFoundError:
print("The file was not found")
return False
except NoCredentialsError:
print("Credentials not available")
return False回答 1
Stack Overflow用户
发布于 2021-08-12 08:51:11
import os
import boto3
import progressbar
from botocore.exceptions import NoCredentialsError
def download_from_s3(bucket, s3_file, local_file):
s3 = boto3.client('s3')
response = s3.head_object(Bucket=bucket, Key=s3_file)
size = response['ContentLength']
up_progress = progressbar.progressbar.ProgressBar(maxval=size)
up_progress.start()
def upload_progress(chunk):
up_progress.update(up_progress.currval + chunk)
try:
s3.download_file(bucket, s3_file, local_file,
Callback=upload_progress)
up_progress.finish()
print("Download Successful")
return True
except FileNotFoundError:
print("The file was not found")
return False
except NoCredentialsError:
print("Credentials not available")
return False
resp = download_from_s3(bucket, s3_file, local_file)页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/59549681
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