Source code for gpflow.experimental.utils

# Copyright 2016-2020 The GPflow Contributors. All Rights Reserved.
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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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from functools import wraps
from typing import Any, Callable, TypeVar, cast
from warnings import warn

C = TypeVar("C", bound=Callable[..., Any])


[docs] def experimental(func: C) -> C: """ Decorator that marks the decorated function as experimental. The first time an experimental function is called, a warning is printed. Example:: @experimental def forty_two() -> int: return 42 """ has_warned = False @wraps(func) def wrap_experimental(*args: Any, **kwargs: Any) -> Any: nonlocal has_warned if not has_warned: name = f"{func.__module__}.{func.__qualname__}" warn( f"You're calling {name} which is considered *experimental*." " Expect: breaking changes, poor documentation, and bugs." ) has_warned = True return func(*args, **kwargs) return cast(C, wrap_experimental)