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Recursively traverse the directory tree of a Google Drive folder as variation of os.walk()
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"""os.walk() variation with Google Drive API.""" | |
import os | |
from apiclient.discovery import build # pip install google-api-python-client | |
FOLDER = 'application/vnd.google-apps.folder' | |
def get_credentials(scopes, *, | |
secrets='~/client_secrets.json', | |
storage='~/storage.json'): | |
from oauth2client import file, client, tools | |
store = file.Storage(os.path.expanduser(storage)) | |
creds = store.get() | |
if creds is None or creds.invalid: | |
flow = client.flow_from_clientsecrets(os.path.expanduser(secrets), scopes) | |
flags = tools.argparser.parse_args([]) | |
creds = tools.run_flow(flow, store, flags) | |
return creds | |
creds = get_credentials(scopes=['https://www.googleapis.com/auth/drive.metadata.readonly']) | |
service = build('drive', version='v3', credentials=creds) | |
def iterfiles(name=None, *, is_folder=None, parent=None, | |
order_by='folder,name,createdTime'): | |
q = [] | |
if name is not None: | |
q.append("name = '{}'".format(name.replace("'", "\\'"))) | |
if is_folder is not None: | |
q.append("mimeType {} '{}'".format('=' if is_folder else '!=', FOLDER)) | |
if parent is not None: | |
q.append("'{}' in parents".format(parent.replace("'", "\\'"))) | |
params = {'pageToken': None, 'orderBy': order_by} | |
if q: | |
params['q'] = ' and '.join(q) | |
while True: | |
response = service.files().list(**params).execute() | |
for f in response['files']: | |
yield f | |
try: | |
params['pageToken'] = response['nextPageToken'] | |
except KeyError: | |
return | |
def walk(top='root', *, by_name: bool = False): | |
if by_name: | |
top, = iterfiles(name=top, is_folder=True) | |
else: | |
top = service.files().get(fileId=top).execute() | |
if top['mimeType'] != FOLDER: | |
raise ValueError(f'not a folder: {top!r}') | |
stack = [((top['name'],), top)] | |
while stack: | |
path, top = stack.pop() | |
dirs, files = is_file = [], [] | |
for f in iterfiles(parent=top['id']): | |
is_file[f['mimeType'] != FOLDER].append(f) | |
yield path, top, dirs, files | |
if dirs: | |
stack.extend((path + (d['name'],), d) for d in reversed(dirs)) | |
for kwargs in [{'top': 'spam', 'by_name': True}, {}]: | |
for path, root, dirs, files in walk(**kwargs): | |
print('/'.join(path), f'{len(dirs):d} {len(files):d}', sep='\t') |
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https://github.com/googleapis/google-auth-library-python/blob/main/docs/index.rst
oauth2client was recently deprecated in favor of this library. For more details on the deprecation, see :doc:
oauth2client-deprecation
.