使用python的谷歌驱动器文件夹中的文件列表

Question

我的问题与这篇文章中提出的问题完全相同：List files and folders in a google drive folder 我在 google drive rest api 文档中没有弄清楚如何获取 google drive 文件夹中的文件列表

Answer 1

有关可用功能，请参阅API...

您可以使用 Drive API files: list 方法搜索文件。您可以不带任何参数调用 Files.list，它会返回用户驱动器上的所有文件。默认情况下，Files.list 仅返回资源的一部分属性。如果您想要返回更多属性，请使用 fields 参数指定要在查询字符串 q 中返回的属性。为了使您的搜索查询更加具体，您可以对每个查询属性使用多个运算符。

Answer 2

您可以在此处查看如何在云端硬盘中列出文件的示例：https://developers.google.com/drive/api/v3/search-files。您需要构造一个列出文件夹中文件的查询：使用

q = "'1234' in parents"

其中 1234 是您要列出的文件夹的 ID。您可以修改查询以列出特定类型的所有文件（例如文件夹中的所有jpeg文件）等。

Answer 3

这是一个简单但成功的解决方案。这实际上获取来自特定 Google Drive 文件夹（在本例中为名为“thumbnails”的文件夹）中的所有文件。我需要从特定文件夹中获取（不仅仅是列出）所有文件并对它们进行图像调整，所以我使用了以下代码：

`# First, get the folder ID by querying by mimeType and name
folderId = drive.files().list(q = "mimeType = 'application/vnd.google-apps.folder' and name = 'thumbnails'", pageSize=10, fields="nextPageToken, files(id, name)").execute()
# this gives us a list of all folders with that name
folderIdResult = folderId.get('files', [])
# however, we know there is only 1 folder with that name, so we just get the id of the 1st item in the list
id = folderIdResult[0].get('id')

# Now, using the folder ID gotten above, we get all the files from
# that particular folder
results = drive.files().list(q = "'" + id + "' in parents", pageSize=10, fields="nextPageToken, files(id, name)").execute()
items = results.get('files', [])

# Now we can loop through each file in that folder, and do whatever (in this case, download them and open them as images in OpenCV)
for f in range(0, len(items)):
    fId = items[f].get('id')
    fileRequest = drive.files().get_media(fileId=fId)
            fh = io.BytesIO()
            downloader = MediaIoBaseDownload(fh, fileRequest)
            done = False
            while done is False:
                status, done = downloader.next_chunk()
    fh.seek(0)
    fhContents = fh.read()
    
    baseImage = cv2.imdecode(np.fromstring(fhContents, dtype=np.uint8), cv2.IMREAD_COLOR)

Answer 4

# Import PyDrive and associated libraries.
# This only needs to be done once per notebook.
from pydrive.auth import GoogleAuth
from pydrive.drive import GoogleDrive
from google.colab import auth
from oauth2client.client import GoogleCredentials

# Authenticate and create the PyDrive client.
# This only needs to be done once per notebook.
auth.authenticate_user()
gauth = GoogleAuth()
gauth.credentials = GoogleCredentials.get_application_default()
drive = GoogleDrive(gauth)

# List .txt files in the root.
#
# Search query reference:
# https://developers.google.com/drive/v2/web/search-parameters
listed = drive.ListFile({'q': "title contains 'CV'"}).GetList()
for file in listed:
    print('title {}, id {}'.format(file['title'], file['id']))