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import warnings
from scrapy.exceptions import ScrapyDeprecationWarning
def deprecated_setter(setter, attrname):
def newsetter(self, value):
c = self.__class__.__name__
warnings.warn("Don't modify %s.%s attribute, use %s.replace() instead" % \
(c, attrname, c), ScrapyDeprecationWarning, stacklevel=2)
return setter(self, value)
return newsetter
