appwrite/docs/examples/1.8.x/server-python/examples/tablesdb/update-email-column.md

from appwrite.client import Client
from appwrite.services.tables_db import TablesDB

client = Client()
client.set_endpoint('https://<REGION>.cloud.appwrite.io/v1') # Your API Endpoint
client.set_project('<YOUR_PROJECT_ID>') # Your project ID
client.set_key('<YOUR_API_KEY>') # Your secret API key

tables_db = TablesDB(client)

result = tables_db.update_email_column(
    database_id = '<DATABASE_ID>',
    table_id = '<TABLE_ID>',
    key = '',
    required = False,
    default = 'email@example.com',
    new_key = '' # optional
)