download-spo-file-graph.py

import requests
import urllib

graph_base_url = 'https://graph.microsoft.com/v1.0'
sharepoint_domain = 'takana17.sharepoint.com'

directory = 'DOWNLOAD-PATH'
bearer_token = '<BEARER-TOKEN-HERE>'

doc_abs_url = 'FILE-LINK'

doc_abs_url_clean = doc_abs_url.split('?')[0]
stripped_url = doc_abs_url_clean.split('/sites/')[1]
site_slug_split = stripped_url.split('/',2)
site_slug = site_slug_split[0]
drive_path = site_slug_split[1]
item_path = site_slug_split[2]
file_name = item_path.split('/')[-1]
file_name_unquoted = urllib.parse.unquote(file_name)

graph_url_site_id = f'{graph_base_url}/sites/{sharepoint_domain}:/sites/{site_slug}?select=id'
response = requests.get(graph_url_site_id, headers={'Authorization': f'Bearer {bearer_token}'})
site_id = response.json().get('id')
site_id_short = site_id.split(',')[1]

graph_url_drives = f'{graph_base_url}/sites/{site_id_short}/drives?select=id,webUrl'
response = requests.get(graph_url_drives, headers={'Authorization': f'Bearer {bearer_token}'})
drives = response.json().get('value')
drive_info = next((item for item in drives if item["webUrl"].endswith(drive_path)), None)

drive_id = drive_info.get('id')

graph_url_item = f'{graph_base_url}/drives/{drive_id}/root:/{item_path}'
response_item = requests.get(graph_url_item, headers={'Authorization': f'Bearer {bearer_token}'})
item_download_link = response_item.json().get('@microsoft.graph.downloadUrl')

local_file_path = f'{directory}{file_name_unquoted}'
response_download = requests.get(item_download_link)

with open(local_file_path, "wb") as file:
    file.write(response_download.content)