Python sample to upload small to medium sized files to SharePoint Online document libraries

upload-file-spo.py

import os
from office365.runtime.auth.client_credential import ClientCredential
from office365.sharepoint.client_context import ClientContext

client_id = '--clientid--'
client_secret = '--clientsecret---'

site_url = 'https://contoso.sharepoint.com/sites/Web01'

credentials = ClientCredential(client_id,
                               client_secret)
ctx = ClientContext(site_url).with_credentials(credentials)
target_web = ctx.web.get().execute_query()
print(target_web.url)


path = "SampleDoc.pdf"
with open(path, 'rb') as content_file:
    file_content = content_file.read()

list_title = "Documents"
target_folder = ctx.web.lists.get_by_title(list_title).root_folder
name = os.path.basename(path)
target_file = target_folder.upload_file(name, file_content)
ctx.execute_query()
print("File url: {0}".format(target_file.serverRelativeUrl))