one_off_login.py
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Minimal example for login with prompt for email and two factor codes.
After the login, the code will print some account info and exit.
No information is persisted to disk.

persistent_login.py
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In this example, after the login prompt, the client will remain connected until interrupted.
The client will attempt to reconnect after losing network connectivity or when steam is down.
A sentry file is persisted to disk for each account.