deprecated( date, instructions, warn_once=True )
See the guide: Framework (contrib) > Deprecation
Decorator for marking functions or methods deprecated.
This decorator logs a deprecation warning whenever the decorated function is called. It has the following format:
date is None, 'after
It also edits the docstring of the function: ' (deprecated)' is appended to the first line of the docstring and a deprecation notice is prepended to the rest of the docstring.
date: String or None. The date the function is scheduled to be removed. Must be ISO 8601 (YYYY-MM-DD), or None.
instructions: String. Instructions on how to update code using the deprecated function.
warn_once: Boolean. Set to
Trueto warn only the first time the decorated function is called. Otherwise, every call will log a warning.
Decorated function or method.
ValueError: If date is not None or in ISO 8601 format, or instructions are empty.
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