mass delete drive files

drive.py

from __future__ import print_function

import httplib2
import os

from oauth2client.file import Storage
from apiclient import discovery
from oauth2client import client
from oauth2client import tools

try:
    import argparse
    flags = argparse.ArgumentParser(parents=[tools.argparser]).parse_args()
except ImportError:
    flags = None

start = 0
end = 1000000000

def readFile(filePath):
    return open(filePath).read().split("\n")

def get_credentials():
    SCOPES = 'https://www.googleapis.com/auth/drive'
    APPLICATION_NAME = 'Drive API Remover'

    credential_path = os.path.join(os.getcwd(), 'python_access_token.json')
    store = Storage(credential_path)
    credentials = store.get()
    if not credentials or credentials.invalid:
        flow = client.flow_from_clientsecrets('client_secret.json', SCOPES)
        flow.user_agent = APPLICATION_NAME
        if flags:
            credentials = tools.run_flow(flow, store, flags)
        else: # Needed only for compatibility with Python 2.6
            credentials = tools.run(flow, store)
        print('Storing credentials to ' + credential_path)
    return credentials

def callback(request_id, response, exception):
    if exception:
        print("Exception:", exception)

def deleteFiles(files):
    credentials = get_credentials()
    http = credentials.authorize(httplib2.Http())
    service = discovery.build('drive', 'v3', http=http)

    while(len(files) > 0):    
        batch = service.new_batch_http_request(callback=callback)

        batchSize = min(len(files),99)
        for i in range(batchSize):
            print("Deleting", files[0])
            batch.add(service.files().delete(
                fileId= files[0]
            ))
            del files[0]

        batch.execute(http=http)

def getAnyFile(folder):
    files = os.listdir(folder)
    for file in files:
        if int(file) >= int(start) and int(file) <= int(end):
            return file
    return None

def main():
    while(True):
        fileName = getAnyFile('files/')
        if fileName == None:
            print('No file exists to delete. Exiting...')
            break

        filePath = 'files/' + fileName
        files = readFile(filePath)
        deleteFiles(files)
        os.remove(filePath)

if __name__ == '__main__':
    main()