How can I compute the pre-authentication token using Python?

The article provides a Python 3 script that computes the preauth token. It takes the target server URL, PreAuthKey, and mailbox (e.g., `[email protected]`), then constructs an HMAC-SHA1 hash using the format `{mailbox}|name|0|{timestamp}`. The script outputs a URL that you can open in a browser to log in automatically. Full code and usage are shown in the Zimbra SOAP API Development Guide 6 - Pre-authentication.