如何使用Python下载特定的Google云端硬盘文件夹? [英] How to download specific Google Drive folder using Python?

问题描述

我正在尝试从Google云端硬盘下载特定文件夹.

I'm trying to download specific folders from Google Drive.

我尝试了这个例子 http://www.mwclearning.com/?p=1608 ，但它会下载所有文件来自G-Drive.

I tried this example http://www.mwclearning.com/?p=1608 but its download all the files from G-Drive.

EX:如果我在Google云端硬盘中有两个文件夹，那么说..

EX: If I have two folders in Google Drive say..

• 一个具有-> 1个，2个文件的文件夹
• 具有-> 3、4、5个文件的B文件夹

如果我要下载文件夹A，则只能下载1个，2个文件.

If I want to download folder A then only 1 , 2 files should get downloaded..

任何建议或帮助都会很有帮助.

Any suggestion or help could be very helpful.

谢谢.

推荐答案

使用云端硬盘 credentials.json 从云端硬盘API下载

Use Drive credentials.json Downloaded from your Drive API

from __future__ import print_function
import pickle
import os
from googleapiclient.discovery import build
from google_auth_oauthlib.flow import InstalledAppFlow
from google.auth.transport.requests import Request
from oauth2client import client
from oauth2client import tools
from oauth2client.file import Storage
from apiclient.http import MediaFileUpload, MediaIoBaseDownload
import io
from apiclient import errors
from apiclient import http
import logging

from apiclient import discovery

# If modifying these scopes, delete the file token.pickle.
SCOPES = ['https://www.googleapis.com/auth/drive']


# To list folders
def listfolders(service, filid, des):
    results = service.files().list(
        pageSize=1000, q="\'" + filid + "\'" + " in parents",
        fields="nextPageToken, files(id, name, mimeType)").execute()
    # logging.debug(folder)
    folder = results.get('files', [])
    for item in folder:
        if str(item['mimeType']) == str('application/vnd.google-apps.folder'):
            if not os.path.isdir(des+"/"+item['name']):
                os.mkdir(path=des+"/"+item['name'])
            print(item['name'])
            listfolders(service, item['id'], des+"/"+item['name'])  # LOOP un-till the files are found
        else:
            downloadfiles(service, item['id'], item['name'], des)
            print(item['name'])
    return folder


# To Download Files
def downloadfiles(service, dowid, name,dfilespath):
    request = service.files().get_media(fileId=dowid)
    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))
    with io.open(dfilespath + "/" + name, 'wb') as f:
        fh.seek(0)
        f.write(fh.read())


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)  # credentials.json download from drive API
            creds = flow.run_local_server()
        # Save the credentials for the next run
        with open('token.pickle', 'wb') as token:
            pickle.dump(creds, token)

    service = build('drive', 'v3', credentials=creds)
    # Call the Drive v3 API

    Folder_id = "'PAST YOUR SHARED FOLDER ID'"  # Enter The Downloadable folder ID From Shared Link

    results = service.files().list(
        pageSize=1000, q=Folder_id+" in parents", fields="nextPageToken, files(id, name, mimeType)").execute()
    items = results.get('files', [])
    if not items:
        print('No files found.')
    else:
        print('Files:')
        for item in items:
            if item['mimeType'] == 'application/vnd.google-apps.folder':
                if not os.path.isdir("Folder"):
                    os.mkdir("Folder")
                bfolderpath = os.getcwd()+"/Folder/"
                if not os.path.isdir(bfolderpath+item['name']):
                    os.mkdir(bfolderpath+item['name'])

                folderpath = bfolderpath+item['name']
                listfolders(service, item['id'], folderpath)
            else:
                if not os.path.isdir("Folder"):
                    os.mkdir("Folder")
                bfolderpath = os.getcwd()+"/Folder/"
                if not os.path.isdir(bfolderpath + item['name']):
                    os.mkdir(bfolderpath + item['name'])

                filepath = bfolderpath + item['name']
                downloadfiles(service, item['id'], item['name'], filepath)


if __name__ == '__main__':
    main()

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