Question

我试图理解为什么对download_file（）的此函数调用始终引发错误。有人可以帮我理解为什么会这样吗？

'''

def get_files():
    results = service.files().list(
        pageSize=10, fields="nextPageToken, files(id, name, mimeType)").execute()
    items = results.get('files', [])
    return items

def download_file(id, filename, mimeType):
    file_id = id
    request = get_files()

    fh = io.FileIO(filename, 'wb')
    downloader = MediaIoBaseDownload(fh, request)
    done = False
    while done is False:
        status, done = downloader.next_chunk()
        print("Download {}%.".format(int(status.progress() * 100)))
        print("Done")
    return fh.getvalue()

def download_all_files():
    files = get_files()
    for file in files:
        id = file['id']
        name = file['name']
        the_type = file['mimeType']
        #print(file['id'], file['name'], file['mimeType'])
        download_file(id, name, the_type)

#Calls
download_all_files()

'''

AttributeError：“列表”对象没有属性“ uri”

Answer 1

您遇到的错误：

AttributeError：“列表”对象没有属性“ uri”

是由于您在in the documentation for such object时将list对象传递到MediaIoBaseDownload引起的，它指定第二个参数应为googleapiclient.http.HttpRequest。

您还要两次调用函数get_files()，一次调用每个文件，另一次实际获取request变量（没有太大意义）。

在Google文档中，有一个示例实际上是download a file from Google Drive。在该示例中，python代码如下所示（python 2代码）：

file_id = '0BwwA4oUTeiV1UVNwOHItT0xfa2M'
request = drive_service.files().get_media(fileId=file_id)
fh = io.BytesIO()
downloader = MediaIoBaseDownload(fh, request)
done = False
while done is False:
    status, done = downloader.next_chunk()
    print "Download %d%%." % int(status.progress() * 100)

请参见示例，他们正在调用get_media()方法，而不是您作为输入传递的文件列表。

基于此，我也将更改您的download_file函数，如下所示：


def download_file(id, filename, mimeType):
    file_id = id
    request = drive_service.files().get_media(fileId=id)

    fh = io.FileIO(filename, 'wb')
    downloader = MediaIoBaseDownload(fh, request)
    done = False
    while done is False:
        status, done = downloader.next_chunk()
        print("Download {}%.".format(int(status.progress() * 100)))
        print("Done")
    return fh.getvalue()

仅作说明，我还要提到id实际上是built in function of python。所以you shouldn't be using it as variable name

Google云端硬盘api属性错误：“列表”对象没有属性“ uri”

1 个答案: