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import warnings
from functools import wraps
def deprecated(use_instead=None):
"""This is a decorator which can be used to mark functions
as deprecated. It will result in a warning being emitted
when the function is used."""
def wrapped(func):
@wraps(func)
def new_func(*args, **kwargs):
message = "Call to deprecated function %s." % func.__name__
if use_instead:
message += " Use %s instead." % use_instead
warnings.warn(message, category=DeprecationWarning, stacklevel=2)
return func(*args, **kwargs)
return new_func
return wrapped
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