如何通过python从Google Storage以编程方式下载文件？

Question

我正在试图从Google Storage下载一些文件，使用Python API。显然这可以通过使用gsutil's cp来完成，事实上我可以做到。

sudo gsutil cp gs://???/stats/installs/*.csv .

然而，我发现不涉及此主题的所有Google Python API例子，我即使这个功能是由API覆盖的考虑。

Answer 1

这是（在谷歌第一的 “谷歌存储Python包装”）覆盖Python Example  |  Cloud Storage Documentation  |  Google Cloud Platform：

要下载的对象：storage/api/crud_object.py (View on GitHub)

def get_object(bucket, filename, out_file): 
    service = create_service() 

    # Use get_media instead of get to get the actual contents of the object. 
    # http://g.co/dv/resources/api-libraries/documentation/storage/v1/python/latest/storage_v1.objects.html#get_media 
    req = service.objects().get_media(bucket=bucket, object=filename) 

    downloader = http.MediaIoBaseDownload(out_file, req) 

    done = False 
    while done is False: 
     status, done = downloader.next_chunk() 
     print("Download {}%.".format(int(status.progress() * 100))) 

    return out_file