Google Drive API 使用 Python 下载文件

Question

我正在尝试制作一个程序来下载存储在 Google 云端硬盘中的文件，我已经在很多地方寻找过如何做到这一点，但我无法让我的程序正常工作。

这是我的代码：

from __future__ import print_function

import pickle

import os.path

from googleapiclient.discovery import build

from google_auth_oauthlib.flow import InstalledAppFlow

from google.auth.transport.requests import Request

# If modifying these scopes, delete the file token.pickle.

SCOPES = ['https://www.googleapis.com/auth/drive.metadata.readonly']

def main():

    """Shows basic usage of the Drive v3 API.

    Prints the names and ids of the first 10 files the user has access to.

    """

    creds = None

    # The file token.pickle stores the user's access and refresh tokens, and is

    # created automatically when the authorization flow completes for the first

    # time.

    if os.path.exists('token.pickle'):

        with open('token.pickle', 'rb') as token:

            creds = pickle.load(token)

    # If there are no (valid) credentials available, let the user log in.

    if not creds or not creds.valid:

        if creds and creds.expired and creds.refresh_token:

            creds.refresh(Request())

        else:

            flow = InstalledAppFlow.from_client_secrets_file(

                'credentials.json', SCOPES)

            creds = flow.run_local_server(port=0)

        # Save the credentials for the next run

        with open('token.pickle', 'wb') as token:

            pickle.dump(creds, token)

    service = build('drive', 'v3', credentials=creds)

  # file_id is an example

  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)

如果我运行程序，我会得到：file_id = '0BwwA4oUTeiV1UVNwOHItT0xfa2M' ^ IndentationError: unindent does not match any outer indentation level

我也尝试过 Pydrive，但它对我不起作用。

我不知道错误在哪里。

Answer 1

下面以“file_id=....”开头的行从左侧缩进 2 个空格。但是上面的代码缩进了 4 个空格。如果这些代码行要在“main”函数中，则需要像其余代码一样缩进……一次缩进 4 个空格。这是复制和粘贴代码时的常见错误。如果您打算进一步扩展代码，请修改复制的代码以匹配或更改您的样式以适应。请注意，PyCharm 和 VSCode 等开发环境具有配置默认缩进的设置。